As water pollution is getting more and more serious now, our household water cannot be guaranteed to be absolutely safe, so for our water safety, everyone will install water purification equipment in the home to use, and the most common is the water purifier. And water purifier. Which one is better? Today I will introduce the difference between the two.
Is a water purifier better or a water purifier?-water purifier
The water purifier can filter out impurities, rust, some bacteria, viruses, colloids, etc. in the tap water, and the filtered water retains trace elements that are beneficial to the human body. It is installed in the kitchen where there is a water supply pipe in the home (usually placed under the kitchen cabinet) and connected to the tap water pipe. The gradual filtering function of the "ultrafiltration membrane" removes harmful substances in the water, and the filtering accuracy is 0.01 micron. The better one is five-stage filtration, the first stage is pp cotton filter element, the second and third stages are activated carbon, the fourth stage is hollow fiber membrane or ceramic filtration, and the fifth stage is refined activated carbon, which is mainly used to improve taste. The disadvantage of the water purifier is that it cannot remove scale, the filter element has a short service life and cannot be moved at will. The water purifier produces a large amount of water, so it is recommended to buy a water purifier in offices, restaurants, schools and other places.

Is the water purifier better or the water purifier better — water purifier
The water purifier is a reverse osmosis membrane water purifier, pure water produced by filtering raw water (physical method) without adding any compounds. It can filter out all the substances in the tap water, which is equivalent to the pure water we buy. Compared with the water purifier, the water purifier can only filter out impurities, etc., and the water purifier also filters all harmful and harmless minerals in the water. Lost. It is generally five-stage filtration, the first stage is filter element, the second and third stages are activated carbon, the fourth stage is RO reverse osmosis membrane (this is the core) for aerospace technology, and the fifth stage is refined activated carbon, mainly used for Improve taste. The disadvantage of the water purifier is that waste water needs to be removed when working. 3 cups of waste water are discharged for each cup of water purified. At the same time, the water purified by the water purifier is too pure and lacks trace elements that are beneficial to the human body. Small, so it is recommended that families with small population buy water purifiers.

Is a water purifier better or a water purifier? What is the difference between a water purifier and a water purifier
The difference between a water purifier and a pure water purifier is that the water purifier is generally sedimentary filtration and has no sewage function. When the service life of the filter element expires, it will be discarded and replaced with a new filter element. The water purifier can continuously flush the RO membrane to eliminate pollutants to extend the service life of the membrane. However, after the service life of the filter element has expired, it must be discarded and replaced with a new one.

The above is some information about water purifiers and water purifiers introduced by the editor and their differences. I hope to help you have a deeper understanding. If we need to buy and use water purification equipment in our family in the future, we can According to the actual local conditions to determine the choice of water purifier or water purifier to use.

Buy a water purifier or a pure water machine? This is a headache for many people. As two different water treatment equipment. Many people think that the two are inferior, so there is not much difference between which one to choose. In fact, this is not the case. The concepts of water purifiers and pure water machines are different, with different characteristics, advantages and disadvantages. Users need to understand these aspects before making a choice.
Buy a water purifier or a pure water machine-the concept of a water purifier and a pure water machine is different
The water purifier removes chlorine in urban tap water and bacteria, viruses, colloids, rust, impurities and other harmful organic pollutions that are harmful to the human body through the physical means of filtration and adsorption. The pure water machine intercepts all organic pollutants and inorganic ions in the water through RO membrane reverse osmosis with ultra-fine precision. There is a certain amount of waste water, and the effluent is pure water for direct drinking.
In terms of characteristics, most water purifiers choose to use activated carbon, meltblown filter cores, microporous ceramics, hollow fibers, KDF, etc. to purify water. These materials need to be replaced regularly, and the filter element needs to be protected. The purification effect of the water purifier is good, but it cannot remove calcium and magnesium ions in the water, that is, the problem of water alkali cannot be solved. The water purifier removes bacteria, viruses, colloids, rust, impurities and other harmful organic pollution to the human body, and can reduce the appearance of scale.
The water purifier can remove harmful substances in the water, retain minerals and trace elements that are beneficial to the human body, and can be drunk raw without power supply and no waste water. However, water and alkali cannot be removed. If you want to remove it, you need to increase the configuration and replace the filter element. The impurity removal rate in the water of the pure water machine is as high as 96%, the taste is good, and the water is pure and sweet. However, waste water is generated during use, and the filter element needs to be replaced regularly. For every liter of water used, 3 liters or more of water needs to be drained. The water purifier completely purifies the water, so there is less water needed by the human body. Minerals and trace elements are not suitable for long-term use.
The above introduces the difference between water purifier and pure water machine, each has its own uniqueness. Which type to choose, users also need to look at the water quality in their area. Some areas have hard water quality and some are softer, so the choice is still different, which can achieve a purification effect and make the water quality better Is the best.

The kitchen is a place for cooking and boiling water, and the water consumption is relatively large. In the face of the reality of poor water quality, the appearance and use of kitchen water purifiers have played a good role in improvement. As early as 1832, a water purifier specially used in the kitchen appeared in the UK, which has a good purification effect. What kind of kitchen water purifier is better? Let’s take a look together below.
The filter water purifier is one of the kitchen water purifiers. It has a simple structure, mainly activated carbon, which acts as a coarse filter. The filtered water is best heated and boiled for drinking. This is the most common type of water purifier, and the price is relatively cheap. It is now used in many families.
The ceramic filter water purifier adopts a plug-in ceramic filter element, which has a large water output and meets the needs of kitchen water. The double control membrane ceramic filter element with a precision of up to 0.1μm has much smaller pores than bacteria, thereby completely isolating the bacteria outside the filter element, but the water can Pass and retain beneficial minerals and trace elements in the water. At the same time, no secondary pollution occurs during the use of the water purifier, and it is not afraid of clogging, and realizes the terminal water purification function. Contains ultrafiltration membrane with a filtration accuracy of 0.01 microns. Suitable for kitchen use, can filter mud, sand, rust, colloid, etc. The filtering effect is obviously better than that of ordinary water purifiers.
The multi-pole filter mainly has two stages of coarse filtration and a set of fine filtration, and the fine filtration mostly uses a hollow fiber filter element, and the filtered water can be directly consumed. For families who like to drink cold water directly, this water purifier is a good choice.
The water purification effect of reverse osmosis water purifier is the best. It has three-stage pre-filtration, one-stage reverse osmosis membrane precision filtration and one-stage post-filtration. The filtered water is free of bacteria, viruses, heavy metals, pesticides, organic matter, minerals and odors. It is pure water and can be consumed without heating. It is a good choice for families with good financial situation.

The above has introduced several common kitchen water purifiers. The technology is different, and the purification effect is also different. What kind of water purifier users want to choose must start from the local water quality and Look at your own economic situation, usage habits and other aspects. I believe that after a comprehensive comparison and comprehensive consideration, you will be able to buy the most satisfactory kitchen water purifier.

At present, there are many kinds of water purifiers, and the users are more selective. Is reverse osmosis water purifier good? How about ultrafiltration water purifier? It is difficult for many users to make a choice between the two. Overall, the water purification effect of these two kinds of water purification equipment is very good, but these are also two different kinds of equipment, and the purification effect also has some differences. Let’s take a look.
Is reverse osmosis water purifier good? Characteristics of reverse osmosis water purifier
RO membrane reverse osmosis technology is used in RO water purifier, and its filtration diameter is only 0.001 μ M. The effluent is pure water, which is a kind of acid water. In addition, the reverse osmosis water purifier is operated by electricity, and the water output is relatively small. The proportion is about four tons of water, and one ton of acid water is discharged. If it is directly discharged, it will be a bit wasteful. The discharged wastewater is not drinkable, but can be used for other purposes.
Is reverse osmosis water purifier good? Characteristics of ultrafiltration water purifier
Ultrafiltration water purifier is a kind of water purifier with a large number of people. It can filter bacteria, colloids and viruses better. The water filtered by ultrafiltration water purifier can be drunk directly, but the premise is normal tap water. After all, ultrafiltration membrane is only a kind of physical filtration, which can’t filter chemical substances. Therefore, there is no problem with general tap water filtration, and the requirement is higher than the standard If it is used in higher places, the effect may not be achieved.
Is reverse osmosis water purifier good? Comparison between reverse osmosis water purifier and ultrafiltration water purifier
Reverse osmosis water purifier adopts reverse osmosis membrane filtration technology, which can make the pH value of produced water much lower than that of influent water. Reverse osmosis membrane is to remove the harmful heavy metal ions dissolved in water through permeable membrane. It can also filter out other ions that are not conducive to health, and retain substances that are helpful to human body. Unhealthy substances will become concentrated water and be eliminated. Ultrafiltration water purifier adopts ultrafiltration membrane filtration technology. The pH value of the produced water remains unchanged, and the substances that are helpful to human body can be retained. In contrast, the taste of water purified by reverse osmosis water purifier is better than that of ultrafiltration water purifier.

Among the water purification equipment used in our family, the water purification equipment we usually buy is reverse osmosis water purifier and ultrafiltration water purifier. These two kinds of water purification equipment are widely used in our family. Today we will introduce what is reverse osmosis water purifier and the difference between these two kinds of water purifiers.
What is reverse osmosis water purifier -- the difference between reverse osmosis water purifier and ultrafiltration water purifier
1. The pore size of reverse osmosis membrane is only 1 / 100 of that of ultrafiltration membrane. The ultrafiltration water purifier can remove particulate pollutants and bacteria, but it can’t do anything about heavy metals, pesticides and other chemical pollutants in water. But reverse osmosis can remove all kinds of pollutants.
2. The effluent quality of the reverse osmosis water purifier is much better than that of the ultrafiltration water purifier. The effluent quality is different from the detection standards of the health department, for example, the bacterial index of the effluent, and the total bacterial count of the ultrafiltration water purifier is 100 / ml according to the "general water quality processor". The reverse osmosis water purifier is 20 / ml.
3. Concentrated water is produced in reverse osmosis water purifier, pure water is for drinking, and concentrated water (waste water) is for washing. The ultrafiltration water purifier is generally used as washing water, when the tap water quality is good, it can also be used as drinking water.
What is reverse osmosis water purifier -- advantages and disadvantages of reverse osmosis water purifier and ultrafiltration water purifier
The advantages of reverse osmosis water purifier are: the water quality is safe, it can remove all kinds of harmful impurities in the water, and it has a good effect on water supply incident. The taste of the effluent is good, which can reduce the hardness of the water, and the boiling water container does not scale.
The disadvantages of reverse osmosis water purifier are: using pump, power on, and electrical safety. There are many joints, high water pressure, relatively high failure rate and leakage probability, complex structure and expensive price.
The advantages of ultrafiltration water purifier are: no pump, no power consumption and no electrical safety problems. There are few joints, low water pressure, low failure rate and leakage probability. The structure is simple and the price is cheap.
The disadvantage of ultrafiltration water purifier is that the effect of removing chemical pollutants in water is poor. The effect on water supply incident is poor. The taste of the effluent is slightly worse. If the hardness of tap water is high, the boiling water container may scale.
The above is for you to introduce some of the reverse osmosis water purifier and ultrafiltration water purifier, I hope you can understand, later in the purchase of water purifier, you can choose to install the appropriate equipment according to the reverse osmosis water purifier and ultrafiltration water purifier.

Both water purifier and direct drinking machine are new water treatment equipment. Similar names make it easy for people to confuse them. In fact, both water purifier and direct drinking machine are part of the family central water purification system. They are good helpers for our healthy drinking water, but their functions and uses are different. Let’s take a look at the difference between water purifier and direct drinking machine.
The difference between water purifier and direct drinking machine
Water purifier is a kind of primary water purification equipment, which can filter harmful substances in tap water and ensure the health of our daily water use. Through physical filtration and adsorption, the water purifier can remove colloid, sediment, rust, bacteria and other large particles and impurities dissolved in water, and only retain minerals and trace elements beneficial to human body. The filtered water meets the standard of health water, and is a kind of clean water.
Direct drinking machine is a kind of equipment that can directly drink tap water after filtering and sterilization. Compared with water purifier, it is a kind of higher precision filtration, which can effectively remove sediment, rust, bacteria, colloid, algae, macromolecular organics and other harmful substances in water, and remove heavy metal ions and organics (such as chloroform), magnetize, mineralize, activate and weakly alkalize water, At the same time, it can improve the taste and form fresh direct drinking water. The purified direct drinking water not only maintains the activity of natural water, but also effectively removes the harmful substances that threaten human health in tap water. It is the drinking water that can really ensure the high quality and healthy life.
The difference between water purifier and direct drinking machine
The water filtered by the water purifier can remove the residual chlorine and impurities in the tap water, reaching the standard of health water, and can be used to wash vegetables and fruits. However, the water filtered by the water purifier has not reached the standard of direct drinking, so it is better to boil it before drinking.
The water treated by the direct drinking machine can be directly drunk, and the taste of making tea, making coffee, making soup and cooking is better, so it is convenient to be used as drinking water. The direct drinking machine makes the way of drinking water transition from "buy water to drink" to "make water to drink". The terminal purification avoids the secondary pollution and makes drinking immediately, which is convenient and hygienic.
The above is the difference between water purifier and direct drinking machine. Although both water purifier and direct drinking machine are tools for filtering and treating water, they have their own characteristics. They are suitable for different places and different groups of people. They are essential for our healthy life. I hope the introduction of Xiaobian can help you understand or buy products.

Household instant electric water heater is a new and more convenient water heater. Compared with our traditional water heater, it is more convenient, environmentally friendly and more conducive to our use. However, many users do not know much about household instant electric water heater, so today we will compare and analyze the differences between household instant electric water heater and traditional water heater.
What is instant electric water heater and traditional water heater
Instant electric water heater is a kind of water heater that can quickly heat the water through electronic heating components, and can control the water temperature, flow rate and power through the circuit to make the water temperature reach the temperature suitable for human body bathing. It can be turned on and heated immediately without waiting. It can start heating in a few seconds.
Traditional water heater is a traditional water heater, which is a water storage type electric water heater. It is a fixed appliance to heat water. It can store hot water for a long time or temporarily, and is equipped with a device to control or limit the water temperature. Water storage electric water heaters are commonly used in families. They are easy to install and inexpensive, but they need to be heated for a long time and can only be used after reaching a certain temperature.
Compared with traditional water heater, the advantages of instant electric water heater
1. The size of the machine is very small
2. Short heating time, instant heating, time-saving and power-saving: it takes only 10-20 seconds from the start-up to the outlet water temperature of 45 ℃; heating quantitative hot water, instant heating, only takes 30% of the time of traditional electric water heater; instant heating, no waiting, even faster than the heating time of gas water heater.
3. Multi way connection: it can be connected to wash basin, shower, bathtub, shower room, villa type can also be connected to multiple bathrooms at the same time.
4. Environmental protection and energy saving: instant heating, no need to store hot water in advance, so as to reduce energy waste; computer temperature control setting, stable outlet water temperature, to minimize the waste of electric energy; ad hoc stepless speed change function, to really save energy and time and power; instant heating products have been certified by domestic and foreign environmental protection agencies.
I believe that through the above introduction, we have understood the difference between the household instant electric water heater and the traditional water heater, and their respective advantages. Generally speaking, if the family wants to choose the water heater, it is more suitable for our present family situation to choose the household instant electric water heater.

In the home, water heater is an indispensable equipment, for our daily life water and bathing hand, etc., have played a good role. Which kind of domestic water heater is the best? At present, gas water heater, electric water heater and solar water heater are the mainstream products among water heaters, which are used more by consumers. Let’s compare the characteristics of these three kinds of water heaters.
Which kind of domestic water heater is the best gas water heater
Gas water heater is a type of water heater which appears earlier and has mature technology. At present, there are mainly four kinds of water heaters, namely, direct discharge type, flue type, forced discharge type and balanced type. However, from the perspective of safety performance, the forced exhaust type and the balanced type are two types of relatively high safety. In particular, the balanced type gas water heater realizes the perfect combination of efficient heat exchange and safe operation, and has advanced digital technology to ensure accurate temperature control and comfortable bathing. The gas water heater can produce heat quickly. Generally, it can produce heat quickly after opening for a few seconds, and the heat output is relatively sufficient. Moreover, the water temperature is particularly constant, so the situation of sudden cold and sudden heat will not appear. However, the safety performance of this type of water heater is not very high, so users still need to pay attention to it.
Which kind of domestic water heater is the best - solar water heater
Solar water heater uses the green energy of solar energy, which is more fashionable and environmentally friendly. Can be installed on the roof or balcony, as long as there is sufficient sunlight, then it can meet the daily use. Solar water heater does not need to consume energy, can provide sufficient hot water supply for the home, is a very energy-saving and environmentally friendly water heater. However, the solar water heater is easily affected by the weather, in the northern winter, in cloudy days, it can not be used.
Which is the best type of domestic water heater
At present, there are water storage and instant electric water heaters, which are popular. Storage type electric water heater has high safety performance, but its volume is relatively large, and it is easy to scale, so it is troublesome to clean. The instant electric water heater has the advantages of fast heat output, small volume and high efficiency. However, it is not suitable for many families, and the circuit may not be very qualified.
The above three types of water heaters are more commonly used in our daily life. In addition, the heat pump water heater is also a type of water heater that most users like. Which one to choose depends on the needs of users. There is no absolute good, there is no absolute bad, choose to suit their own use, then it is the best water heater.

There are more and more types of water treatment equipment in the market now, and different types of equipment have different functions and effects. Both drinking fountains and direct drinking fountains use more common equipment. So which one is more in terms of their functional characteristics? Better, let’s take a look at which one is better by introducing them separately.
Which is better, drinking fountains or direct drinking fountains-Introduction to drinking fountains
1. Safety performance The water dispenser is powered by a power source. If the water dispenser has leakage or poor insulation, it is extremely dangerous. Consumers must first identify the brand of the product and the CCEE product certification mark of the China Electrotechnical Safety Certification Commission when purchasing.

2. Electrical performance Fill in water, turn on the power supply, and press the cooling and heating power switches several times. The contacts of the switches should be good, and the corresponding indicator lights will be displayed, indicating that the water dispenser circuit is basically normal. Press the refrigeration switch and approach the air outlet on the back panel with your hand. There is a sense of exhaust. The noise is very weak and the fan is running normally. After powering on for 2 hours, press the cooling faucet and cold water should flow out. For example, semiconductor refrigeration can reduce the temperature of ice water to 5-15℃, and compressor refrigeration can reduce the temperature of ice water to 4-12℃. Press the heating switch and heat for 15-20 seconds, the water temperature should reach 92-96℃. During this period, the heating indicator will automatically turn on and off.

3. Disinfection and descaling When the water dispenser pours water, it will bring in a lot of bubbles, and these bubbles will carry some bacteria into the bottled water. On the other hand, if the interior of the water dispenser is used for a long time without cleaning, dirt will be deposited in the water tank, water channel, and water outlet, and a large number of bacteria will also be breeding. After using for a period of time, the water dispenser must be cleaned, disinfected and descaled regularly to ensure people’s healthy life. To clean the drinking fountain, you must use a qualified cleaning agent and professional drinking fountain cleaning tools.
Which is better, a drinking fountain or a direct drinking machine-introduction to the direct drinking machine
1. Introduction to direct drinking water machine As the name implies, it is a machine and equipment that directly purifies water and then reaches the three standards of direct drinking water. The direct drinking fountain is a kind of water appliance. Through multi-stage purification, it incorporates high-tech ingredients to make the water small molecules and weakly alkaline, so that the tap water in the family can achieve the effect of direct drinking, making it easier for the human body to absorb and drink. It can regulate the acid-base balance of the body.

2. Working principle Most of the pure water machines use reverse osmosis technology: The principle of reverse osmosis is to apply a pressure greater than the natural osmotic pressure on the raw water side, so that water molecules reverse osmosis from the high concentration side to the low concentration side. Because the pore size of the reverse osmosis membrane is much smaller than hundreds or even thousands of times that of the case viruses and bacteria, all kinds of viruses, bacteria, heavy metals, solid solubles, polluting organics, calcium and magnesium ions, etc. cannot pass through the reverse osmosis membrane. , So as to achieve the purpose of water softening and purification.

According to the above-mentioned separate introductions of drinking fountains and direct drinking fountains, it can be seen that both have good performance in water quality treatment, and both can effectively remove a large number of harmful bacteria in the water. In terms of models, the direct drinking machine eliminates the secondary pollution hazards of bottled water, and is more expensive in terms of economy. Users should analyze and compare reasonably according to their own conditions when purchasing.

In the 21st century when water pollution is becoming more and more serious, people’s drinking water and other domestic water problems are becoming more and more worrying. In order to let people use better water, there are more and more high-tech water purification and drinking water equipment in the market. Now I’d like to introduce the difference between two types of drinking water equipment pipeline machine and drinking water machine.
Difference between pipeline machine and direct drinking machine
Pipeline machine, also known as pipeline water dispenser, is generally used in families, offices, schools, etc., with the use of water purification equipment, in which the built-in water storage PE tank, clean water in advance in the PE tank, for drinking. The direct drinking machine is equipped with water purification equipment inside the pipeline machine. The standard configuration is five-stage filtration, and the applicable water source is urban tap water. The water filtered by 5-level RO membrane filtration (RO direct drinking machine) or 5-level UF membrane (ultrafiltration direct drinking machine) directly enters the pipeline machine system, which can be directly drunk and has heating and cooling functions.
Difference between direct drinking machine and pipeline machine - function difference
Pipeline machine has no filtering function, only plays the role of boiling water and ice water, equivalent to the traditional drinking water machine. The direct drinking machine has its own filtering function, and the filtered water quality can reach the direct drinking effect. According to the water quality, the direct drinking machine can be divided into ultrafiltration direct drinking machine (purified water), reverse osmosis direct drinking machine (pure water) and energy activated direct drinking machine (energy water). Most of the direct drinking machines integrate filtration, boiling water and ice making water, which are widely used in families and offices, etc Water equipment will gradually replace bottled water and traditional water dispensers.
Difference between direct drinking machine and pipeline machine - function difference
Pipeline machine has no filtering function, only plays the role of boiling water and ice water, equivalent to the traditional drinking water machine. The direct drinking machine has its own filtering function, and the filtered water quality can reach the direct drinking effect. According to the water quality, the direct drinking machine can be divided into ultrafiltration direct drinking machine (purified water), reverse osmosis direct drinking machine (pure water) and energy activated direct drinking machine (energy water). Most of the direct drinking machines integrate filtration, boiling water and ice making water, which are widely used in families and offices, etc Water equipment will gradually replace bottled water and traditional water dispensers.

After the gas water heater is turned on, the comfortable water heater can flow out in a few seconds, which is very convenient. Compared with the waiting time of about half an hour for the electric water heater, the advantage is still very obvious. Electric water heaters are inseparable from electricity. Many people have this doubt about whether gas water heaters use electricity. Under normal circumstances, it is not needed, but the forced discharge type requires electricity. Which gas water heater or electric water heater is more energy efficient?
Whether the gas water heater needs electricity depends on the type
The general gas water heater does not need electricity, as long as the battery is enough. The forced-discharge gas water heater requires electricity, which is only a few tens of watts. The forced exhaust gas and I am angry usually need a 220V power socket, but it is standby power consumption. The user should buy a three-eye socket with a switch. Usually, the power can be completely cut off without being used. One is safety and the other is energy saving. The power consumption of the forced exhaust gas water heater is mainly the internal pulse ignition and the exhaust fan. Therefore, this type of gas gas water heater needs to consume electricity, and other types do not need it. This type of power consumption is limited.
Comparison of energy consumption between gas water heater and electric water heater
Which gas water heater or electric water heater has a lower cost? This is to be compared. For an ordinary 50-liter storage-type electric water heater that has been used for 8 years, the total electricity price and miscellaneous expenses for "electricity to boil water + heat preservation and storage" will far exceed a 10-liter digital constant temperature gas The price of water heaters, and the larger the capacity of the former, the higher the power consumption. From the perspective of energy consumption, the consumption of gas water heaters is relatively low. Under the same circumstances, the cost is much lower than that of electric water heaters, so it is quite economical. But in comparison, the price of electric water heaters is a bit cheaper.
In general, gas water heaters consume very little electricity, and the cost is not very high during long-term use in the future. Electric water heaters require different amounts of electricity consumption according to their volume. In the long run, the cost of electric water heaters is still relatively high. If users are from an economic point of view, choosing a gas water heater is a very good choice. However, electric water heaters also have their own advantages, such as easy to use, convenient, etc. Users can comprehensively compare and see which water heater is more suitable for them, which helps to choose the most satisfactory type of water heater.

Drinking water health has been a topic of continuous concern for us in recent years, but the poor water quality has been affecting our daily lives. Nowadays, people are more yearning for a comfortable, quality and healthy life, so clean drinking water is an important step we pursue. Nowadays, there are many types of water purifiers, such as water purifiers, water softeners, and water purifiers on the market. So what are they all for? What is the difference between water softeners and water purifiers?
Water softeners basically use ion exchange technology to replace calcium and magnesium ions (aqueous alkali) in water with sodium cations to completely remove scale, which can bring many benefits to life. The pure water machine adopts reverse osmosis membrane filtration technology. The core is microporous filtration. Only water molecules and minerals smaller than water molecules can pass through the membrane and remain for drinking; bacteria, viruses, scale, and pollutants cannot pass through the membrane and become Concentrated water is discharged; thus reaching the standard of pure water.
Differences in product characteristics
The water softener filters through the resin, and regularly places large grains of salt to restore the vitality of the resin. Mainly softened water uses ion exchange technology to absorb hardness impurities such as calcium and magnesium ions in the water to remove water and alkali in the water. It cannot be directly drunk. It is domestic water. The water purifier has a motor and needs a power source, and it is generally a five-stage filter. The first stage is a filter element, the second and third stages are activated carbon, the fourth stage is reverse osmosis membrane, and the fifth stage is refined activated carbon, which is mainly used for improvement Taste.
The difference in life use
The soft water processed by the water softener has a high oxygen content, which can effectively prevent stone disease and is beneficial to health. Soft water baths, shampoos, and face washes are smooth and tender, and have a protective effect on the skin. The clothes washed in soft water are clean, fluffy, gorgeous, and have no residual washing and taste. The washed tableware and tea sets are crystal clear, and the cleaning is very labor-saving. The purified water treated by the water purifier not only retains water molecules and dissolved oxygen, but also trace elements needed by the human body. The purified water produced by it is sweet and delicious, and can be consumed directly or used in large quantities for cooking. The safest, most economical and most convenient way of drinking water.

The above two kinds of water purification equipment play different roles in our lives and do not interfere with each other. If you can correctly distinguish between water softeners and pure water machines, you should be very clear about the needs of your own home. The pure water machine can be prepared and drink, but finally remind everyone that the water softener is domestic water and cannot be directly drunk.

When it comes to water purifiers, most families are no strangers. When it comes to ultrafiltration water purifier products, everyone’s impression is also "a water purifier that retains natural minerals in the water." So? Compared with water purifiers that do not retain minerals, what are the differences between ultrafiltration water purifiers? How should ordinary households choose water purifiers? Next, I will reveal them one by one.
"Divergence and coexistence" between ultrafiltration machine and pure water machine
Which is better, ultrafiltration machine or pure water machine? Frankly speaking, each has its own pros and cons, and the two coexisting in the market for so long is the best proof. Pure water machine, also known as "purified water purifier", works on the principle of "reverse osmosis technology in membrane filtration technology". The biggest advantage is the extremely strong purification performance. In theory, all substances in the water except "H2O" can be filtered out (including mineral elements such as calcium and magnesium ions that are beneficial to the human body). Ultrafiltration machine, also known as "ultrafiltration water purifier", works on the principle of "ultrafiltration technology in membrane filtration technology". The biggest advantage is that while removing harmful substances in the water, it can effectively retain the natural mineral elements in the water, and it is not pure water after filtration. However, the purification performance of ultrafiltration water purifiers is slightly inferior to that of pure water machines.
In summary, both technologies belong to "membrane filtration technology", both of which utilize the physical screening effect of filtration membranes on impurities in water. The difference is that the water purifier has the purification performance that the ultrafiltration water purifier does not have, and the ultrafiltration water purifier has the "mineral retention capacity" that the water purifier does not have. The old saying "fish and bear’s paw can’t have both" is exactly the truth.
Ultrafiltration machine and pure water machine are actually "the same family and the same family"
Technically speaking, ultrafiltration water purifiers and pure water machines are originally "brothers in the same discipline", and their working principles are both "the principle of membrane filtration under water pressure." The difference is that the filter membrane of the water purifier is a "reverse osmosis membrane", and the filter membrane of the ultrafiltration water purifier is an "ultrafiltration membrane". The biggest difference between the two membranes is the difference in the size of the filtration pore size on the membrane surface. The ultrafiltration membrane has a very small filtration pore size (membrane with a filtration pore size of 0.01-0.1 microns is an ultrafiltration membrane, which is more pore size than human The hair strands are thousands of times thinner), and the filter pore size of the reverse osmosis membrane is even smaller (membrane with a filter pore size of less than 0.001 microns is a reverse osmosis membrane). Seeing the scene of two types of water purifier products competing with each other in the market, I can’t help but sigh, "It was born from the same root, so why is it too anxious."

The above is the comparison of the ultrafiltration machine or the pure water machine shared by Comfort 100. I believe everyone has the answer to whether to buy an ultrafiltration machine or a pure water machine. According to their own needs, users can choose the appropriate ultrafiltration machine or pure water machine.

Water purifiers are almost something that every household should popularize. This is related to our health and we cannot afford to ignore it. But what kind of water purifier should we buy? You know the water purifier is good.
Water purifiers are almost something that every household should popularize. This is related to our health and we cannot afford to ignore it. But what kind of water purifier should we buy? Do you know that there are several levels of water purifiers? What is the effect of the five-stage water purifier? The price of a five-stage water purifier is related to its quality and our health, but what price should a five-stage water purifier have to be accepted and recognized by us?
Five-stage water purifier price-pricing basis
1. Different levels: often the level of water purifiers represents the level of their water purification effect. The prices of water purifiers from single-stage, double-stage, three-stage to five-stage, and even higher ones tend to increase. High, the improvement of water quality is also different.

2. Functions of each level: Three-stage water purifier: The three-stage filter water purifier can only coarsely purify the visible objects in the tap water and remove bleach and chlorine. Such water needs to be boiled before drinking, suitable for family cooking . Four-stage water purifier: The four-stage water purifier has a higher filtration accuracy than its three-stage water purifier. If the water quality is poor, it is recommended to boil it before drinking. Five-stage water purifier: The five-stage water purification is one more stage than the fourth-stage water purification, which can improve the taste of the water.

3. Look for cost-effective: After reaching a certain level, the difference between them will gradually narrow. Therefore, you can not only look at the level of the level, nor the price. You can directly decide which level of water purifier to buy According to related investigations, the five-level water purifier is a more suitable water purifier, and it is the most cost-effective water purifier in terms of quality and effect.
Five-stage water purifier price-the difference with four-stage
The five-stage water purifier is more expensive than the fourth-stage water purifier. This depends on the material of the filter core inside, and it is not that the more stages the better. If it is filtered with 100 layers of gauze, it is far inferior to the purification of first-stage ultrafiltration, but the purification effect of multi-stage and multiple materials is definitely better than single-stage purification. The main thing is to look at the material, the brand and the inspection details. The water purifier is mainly based on the customer’s requirements for water quality, and the water purification process can be increased or decreased.

The price of five-level water purifiers is also diversified among various brands, and should be purchased rationally, knowing that the price of "sex" is important for shopping. When comparing the price of a five-level water purifier with other levels, you should pay attention to the water purification flow rate, rated total water purification volume, applicable water pressure and other parameters of different water purifiers, combined with service life and sales price, and consider the price of the filter element , Choose a product with a good brand and high cost performance.

Electric water heaters are water heaters that use electricity to heat water, and are one of several mainstream water heater products. On the whole, electric water heaters are relatively safe. If you heat the water and use a water heater to take a bath after power off, the safety will be higher.
Is an electric water heater good-common problems of electric water heaters
The problem of scale: first is the limitation of scale. Scale is the natural enemy of water heaters. Take the metal heating elements of water heaters. Although their workmanship is very good, because of the heating cup structure, there are multiple sets of heating tubes inside, and the water flows through the middle. After being heated, even the flowing water still cannot avoid the deposit of scale. Over time, the heating efficiency is significantly reduced. Therefore, the heating body of the heating cup is designed to be detachable to clean the scale inside.

Power problem: There is also the limitation of the electricity use environment, that is, the greater the power of the thermal electric water heater, the more hot water can be produced per unit time, but the higher the power will test the wires in the bathroom, then the instant electricity Is the water heater unusable if it is immature? That’s not it. Regular maintenance and cleaning of the metal heating body can also be used for a long time, and it is also good that the non-metal does not require much maintenance.
Is an electric water heater good? Which is better, an electric water heater or a gas water heater?
1. Hot water production rate: The gas water heater has high power, can realize rapid heating, and can produce continuous hot water of rated volume every minute. Thermoelectric water heaters are not as powerful as water heaters, and the heating speed is slow. Although storage-type electric water heaters have a larger inner tank, it takes half an hour to heat a tank of water. Of course, instant electric water heaters can be turned on immediately Heat, the heat production rate is also relatively high.

2. Thermal stability: The gas water heater is equipped with a special temperature adjustment device. In addition to rapid heating, once the temperature is set, it can continuously produce constant temperature hot water. Although the instantaneous electric water heater in the electric water heater can also achieve constant temperature hot water, the storage electric water heater has a preheating process, and it takes half an hour to produce hot water, and the water temperature needs to be adjusted during use.

3. Energy consumption ratio and price: Gas water heaters are generally higher in price than electric water heaters, and installation and maintenance are more complicated. Because gas is used as the gas source, the cost of use will be higher, and the price of gas will continue to rise. Electric water heaters are cheap, easy to install, and easy to maintain. In addition, electricity costs are not as high as gas costs.

4. Environmental protection and safety: Gas water heaters use gas, which will remove carbon monoxide and other air-polluting gases, and will cause poisoning when discharged indoors. Electric water heaters use electricity and do not emit polluting gases. In terms of safety, both have corresponding safety problems. Electric water heaters have hidden dangers of leakage, and gas has hidden dangers such as fire.

The electric water heater itself does not store water, but uses the internal rapid heating device to instantaneously heat the water flowing through the machine to achieve the effect of instant hot water. Compared with the storage type, it has more power and faster heating , Smaller size and more space saving. So even a shower room with a lot of water can be used, but you have to choose a style with a power greater than 600OW. Especially for villas with more water-consuming rooms, or families with small bathrooms and nowhere to install storage-type electric water heaters, high-power instant electric water heaters can be used instead.

Removal of three causing substances: Studies have shown that nanofiltration membranes can remove most of the toxic and harmful organic matter and Ames mutagen in the water, so that the mutagenic ratio MR value of TA98 and TA100 strains at each test dose is less than 2, Ames test The result was negative. Further research will investigate the retention characteristics of endocrine disrupting substances in drinking water by nanofiltration technology and provide a basis for safe and high-quality drinking water.
The development and application of nanofiltration (NF) membranes is about 20 years later than reverse osmosis membranes. In the 1970s, J·E·Cadotte studied NS-300 membrane, which was the beginning of the study of NF membrane. At that time, the Israeli desalination company used "hybrid filtration" to mean a membrane separation process between reverse osmosis and ultrafiltration, which was called loose RO membrane.

Later, Filmtec in the United States referred to this membrane technology as nanofiltration, and it has been used today. After that, nanofiltration technology developed rapidly, and membrane modules were commercialized in the mid-1980s. At present, nanofiltration technology has become one of the research hotspots in the field of membrane separation in the world.
(1) Definition of nanofiltration membranes So far, the understanding of the precise definition, mechanism and characteristics of nanofiltration membranes is far from sufficient. The more uniform interpretation of the definition of nanofiltration membrane in the academic circles includes the following seven aspects:

① Nanofiltration membrane is between reverse osmosis and ultrafiltration membrane, and the separation skin on the membrane surface may have a nano-scale microporous structure.

② Compared with the reverse osmosis membrane, the NaCI removal rate is above 95%. Generally, the membrane with the NaCI removal rate below 90% can be called a nanofiltration membrane.

③ The reverse osmosis membrane has a high removal rate for almost all solutes, while the nanofiltration membrane only has a removal rate for specific solutes.

④ The pore size of the nanofiltration membrane is above 1nm, generally 1~2nm.

⑤ It mainly removes lysosomes about one nanometer, and the molecular weight cut-off is 200-1000 Daltons.

⑥ The reverse osmosis membrane is almost all made of polyamide, and the nanofiltration membrane material can be made of various materials, such as cellulose acetate, cellulose acetate-triacetate, sulfonated polysulfone, sulfonated polyethersulfone, and aromatic polyamide composite materials And inorganic materials.

⑦ Generally, a polymer electrolyte is formed on the surface of the nanofiltration membrane, which often has a strong negative charge.

(2) Nanofiltration principle Like membrane separation processes such as ultrafiltration and reverse osmosis, nanofiltration is also a membrane separation process driven by pressure difference, which is an irreversible process.

The separation mechanism can be described using charge models (space charge model and fixed charge model), pore model, and electrostatic repulsion and three-dimensional obstruction models that have only been proposed in recent years.

Compared with other membrane separation processes, one advantage of nanofiltration is that it can retain small molecular weight organics that pass through the ultrafiltration membrane, and it can also dialyze some of the inorganic salts retained by the reverse osmosis membrane—that is, it can synchronize "concentration" and desalination. get on.

The transmembrane pressure difference required for NF membrane separation is generally 0.5 to 2.0 MPa, which is 0.5 to 3 MPa lower than the pressure difference that must be applied to achieve the same permeation energy with a reverse osmosis membrane. Under the same applied pressure, the flux of nanofiltration is much larger than that of reverse osmosis, and when the flux is constant, the pressure required for nanofiltration is much lower than that of reverse osmosis.

Therefore, when nanofiltration is used instead of reverse osmosis, the "concentration" process can be carried out more efficiently and quickly, and a larger "concentration" multiple can be achieved. Generally speaking, in the membrane separation process using nanofiltration membranes, the rejection rate of various solutes in the solution has the following rules:

① Increase with the increase of molar mass;

②In the case of a given feed concentration, it increases with the increase of the transmembrane pressure difference;

③In the case of a given pressure, it decreases as the concentration increases;

④ For anions, it rises in the order of NO3-, CI-, OH-, SO42-, CO42-.

⑤ For cations, it rises in the order of H+, Na+, K+, Ca2+, Mg2+, Cu2+.

(3) Application of nanofiltration membrane These properties of nanofiltration membrane determine its unique and broad application in drinking water treatment, which is briefly described as follows.
① Softening: Membrane softening water mainly uses the selective permeability characteristics of the nanofiltration membrane to different valence ions to realize the softening of water. The film softening can remove the turbidity, chroma and organic matter while removing the hardness, and the effluent quality is significantly better than other softening processes. Moreover, membrane softening has the advantages of no need for regeneration, no pollution, simple operation, and less floor space, and has obvious social and economic benefits. Membrane softening is very common in the United States. In the past 10 years, new water softening plants in Florida have adopted membrane softening instead of conventional lime softening and ion exchange processes. In recent years, with the continuous improvement of nanofiltration performance, the price of nanofiltration membrane modules has been declining, and the membrane softening method has been superior or close to conventional methods in terms of investment, operation, and maintenance.

② Used to remove organics in water: In addition to softening in drinking water treatment, nanofiltration membranes are mostly used for decolorization, removal of natural and synthetic organics (such as pesticides, etc.), tertiary substances, and disinfection by-products (trihalomethanes and haloacetic acids) And its precursors and volatile organic compounds to ensure the biological stability of drinking water.

Removal of three causing substances: Studies have shown that nanofiltration membranes can remove most of the toxic and harmful organic matter and Ames mutagen in the water, so that the mutagenic ratio MR value of TA98 and TA100 strains at each test dose is less than 2, Ames test The result was negative. Further research will investigate the retention characteristics of endocrine disrupting substances in drinking water by nanofiltration technology and provide a basis for safe and high-quality drinking water.

Removal of disinfection by-products and their precursors: disinfection by-products mainly include trihalomethanes (THMs), haloacetic acids (HAAs) and possibly trichloroacetaldehyde hydroxide (CH). Foreign scientific and technological workers have carried out extensive research in this area, and the average rejection rates of the three kinds of disinfection by-product precursors by nanofiltration membranes are 97%, 94% and 86% respectively. Through the selection of suitable nanofiltration membranes, drinking water quality can meet higher standards for safe and high-quality drinking water.

In addition, nanofiltration water is low corrosive, which has a positive impact on the service life of the drinking water pipe network and the dissolution of metal ions in the pipe, which is beneficial to protect all materials of the water distribution system. Tests show that the use of the necessary post-treatment nanofiltration membrane system can reduce the dissolution of lead in the pipe network by 50%, and at the same time make the concentration of other dissolved metal ions meet the requirements of drinking water quality standards.

Removal of volatile organic compounds (VOC): It has a high removal rate for trace volatile organic compounds in drinking water.

Application in direct drinking water in pipelines; Nanofiltration can intercept ions with more than two valences and other particles, and only water molecules and some monovalent ions (such as sodium, potassium, and chloride ions) are passed through. Nanofiltration can be used to produce direct drinking water, and certain ions are still retained in the effluent, and treatment costs can be reduced.

Core tip: RO reverse osmosis technology is the most effective treatment technology to filter out heavy metals. The principle of reverse osmosis applies greater pressure on the side of the raw water to make the water molecules reverse osmosis from the higher concentration to the lower concentration.
RO reverse osmosis technology is the most effective treatment technology to filter out heavy metals. The principle of reverse osmosis applies greater pressure on the side of the raw water to make the water molecules reverse osmosis from the higher concentration to the lower concentration. Because the pores of reverse osmosis are hundreds or even thousands of times smaller than those of viruses and bacteria, all kinds of viruses, bacteria, heavy metals, solid solubles, and contaminated organics cannot pass through the RO reverse osmosis membrane to achieve the purification effect.
Water purifiers should be regarded as a very common household appliance. In order to let their families drink clean water, more people choose RO water purifiers, because RO water purifiers use RO membranes to purify sewage. Filter products have a relatively high filtration accuracy, but how much do you know about RO water purifiers?
The accessories of RO water purifier include: faucet, pressure bucket, water pipe, joint, casing, PP filter element, activated carbon filter element, RO membrane, waste water ratio, high pressure switch, low pressure switch, etc.
RO water purifier purification process

The tap water enters the RO water purifier through the water pipe and the filter element of the first three seasons wakes up to filter for the first time, and then the water is pressurized by the booster pump to let the water flow into the RO reverse osmosis membrane. The reverse osmosis effect of the RO membrane finely purifies the water source and transports the water. To the pressure tank, save in the pressure tank. When you need to use it, open the pressure bucket valve, press the pressure bucket to let the water flow into the last stage of activated carbon filter element, and then output clean water through the gooseneck faucet.
RO reverse osmosis technology principle

RO reverse osmosis technology is the most effective treatment technology to filter out heavy metals. The principle of reverse osmosis applies greater pressure on the side of the raw water to make the water molecules reverse osmosis from the higher concentration to the lower concentration. Because the pores of reverse osmosis are hundreds or even thousands of times smaller than those of viruses and bacteria, all kinds of viruses, bacteria, heavy metals, solid solubles, and contaminated organics cannot pass through the RO reverse osmosis membrane to achieve the purification effect.
Why is it called "reverse osmosis" filtration?

When the same volume of dilute solution (such as fresh water) and concentrated solution (such as salt water) are placed on both sides of the semi-permeable membrane, the solvent in the dilute solution will naturally pass through the semi-permeable membrane and spontaneously flow to the concentrated solution side. This phenomenon is called penetration.

When the permeation reaches equilibrium, the liquid level on the side of the concentrated solution will be higher than that of the dilute solution by a certain height, that is, a pressure difference is formed. If a pressure greater than the osmotic pressure is applied to the side of the concentrated solution, the solvent’s The flow direction will be opposite to the original osmosis direction, starting to flow from the concentrated solution to the dilute solution. This process is called reverse osmosis. Simply put, it is to apply pressure to the concentrated solution by energizing, changing the original permeation direction, and realizing the countercurrent of the concentrated solution, thereby purifying the concentrated solution and producing pure water.