Water is the source of life, but the domestic water quality of our residents is generally faced with problems such as hard water scale, more impurities, excessive chlorine content and other problems. Drinking unclean water for a long time will cause health hazards. Therefore, purchasing household purified water Equipment is vital to good health. More and more families are beginning to install water purifiers to filter tap water. What is the difference between a water purifier and a water purifier? Which brand of water purifier is good? Which is the best home water purifier?
1 Introduction of water purifier
1. What is water purifier
The water purifier is a water purification equipment that uses multi-stage filter elements for water purification treatment. The treatment mostly uses physical methods such as filtration, adsorption, and reverse osmosis that do not add chemical substances. All organic pollutants and inorganic ions in the water are intercepted by RO membrane reverse osmosis with ultra-fine precision, there is a certain amount of wastewater, and the effluent is pure drinking water.
2, Water Purifier Function
Remove impurities, rust, sediment, colloid , bacteria, viruses, and at the same time, harmful radioactive particles, organics, fluorescent substances, and pesticides will be removed. In addition, it can also remove water, alkali and heavy metals to ensure healthy drinking water for the family.
3. Principle of water purifier
The water purifier has three-stage pretreatment, RO reverse osmosis membrane, water storage tank, etc. Using RO reverse osmosis membrane separation technology, by applying a certain pressure to the water, water molecules and ionic mineral elements pass through the reverse osmosis membrane, and most of the inorganic salts (including heavy metals), organic matter and bacteria, Viruses cannot penetrate the reverse osmosis membrane, so that the permeated pure water and the impermeable concentrated water are strictly separated.
4, Water Purifier Workflow
Reverse Osmosis (also known as reverse osmosis) Technology: It is to apply a pressure greater than the natural osmotic pressure on the raw water side, so that the water molecules reverse osmosis from the side with high concentration to the one with low concentration. Since the pore size of the reverse osmosis membrane is much smaller than hundreds or even thousands of times that of viruses and bacteria, various viruses, bacteria, heavy metals, solid solubles, polluted organics, calcium and magnesium ions cannot pass through the reverse osmosis membrane at all. So as to achieve the purpose of water purification.
2 Classification of water purifiers
By purpose
1. Drinking water purifiers (household water purifiers);
2. Laboratory pure water machine (also called ultrapure water machine);
3. Industrial pure water machine;
4. Large industrial pure water machine waterplane.
Usage
1. Manual type (economical type), using a manual backwash valve.
2. Automatic type, that is, the pure water machine is automatically flushed by the computer, and the flushing is realized through the computer control panel.
3. Self-cleaning type (self-cleaning type), reverse osmosis series of self-cleaning water purifiers, without manual operation and electrical components, simple structure but self-cleaning of the whole machine.
The combination of the host and the water storage tank
1. Split type, the split type covers a relatively large area, and the storage tank and the body are separated.
2. All-in-one, the main unit of the all-in-one pure water machine and the water storage bucket are together, which occupies a small area and has a beautiful appearance.
3 Filter elements for household water purifiers
Functions of filter elements for household water purifiers
PP cotton, for primary filtration of raw water, removing Coarse particles in water, sludge, colloid, suspended matter, etc.
Granular activated carbon can absorb odor, color, organic matter and some heavy metals in water.
Carbon rod activated carbon, further removes chlorine, organic compounds, different colors, odors, turbidity, etc.
RO reverse osmosis membrane, with a pore size of 0.1 nanometers, removes bacteria, viruses, heavy metals, and other organic impurities in water.
The activated carbon is installed at the back to adjust the pH value of the effluent and improve the taste.
Replacement steps for the filter element of household water purifier
1. The machine can be replaced only when the machine is stationary (the pump stops working);
2. Turn off the three switches of the machine in sequence;
3. Turn off the power first and unplug it;
4. Turn off the pressure tank ball valve second (The blue lever on the upper part of the pressure tank);
5. Finally, close the water inlet ball valve (the black ball valve handle connected to the tap);
6. Now the filter element of the machine can be replaced , use the filter bottle wrench to unscrew the 3 filter bottles respectively, and face the machine in sequence from right to left to 123 levels;
7, 5 micron PP cotton is placed on the 1st level / mesh pressure column is placed on the 2nd level Place 1 micron PP cotton on carbon/grade 3;
8. After replacing the first three-stage filter element, start to replace the RO membrane. The position of the membrane is the white plastic shell above the machine iron plate;
9. Unscrew the cover with the membrane shell wrench to see the membrane. Note that due to long-term use of the machine, the membrane is sometimes difficult to pull out. You can use needle-nose pliers to pull it out;
10. Follow Install the new membrane in the direction in which the old membrane is taken out. One end of the membrane has a double O-ring and this end faces inward, and the installation is completed; Unscrew the old carbon rod from the elbow, and then screw on the new one. You can wrap a little raw material tape at the interface of the new carbon rod to prevent water leakage;
12. After the filter element and membrane are all replaced , turn on the switches one by one according to the steps, the same order can not be wrong;
13. First open the water inlet ball valve (the black ball valve handle connected to the tap);
14. Next, open the pressure tank Ball valve (blue lever on the upper part of the pressure tank);
15. Plug in the power supply at last;
16. After the machine core is changed, the gooseneck faucet should be turned on to flush water for about 20 minutes The same as the new machine;
17. All the filter elements have been replaced, and you can drink pure water with confidence.
4 Which is better, water purifier or water purifier
1, water purification technology is different
The pure water machine intercepts all organic pollutants and inorganic ions in the water by means of 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. The water purifier removes chlorine in urban tap water and various organic pollutants such as bacteria, viruses, colloids, rust, impurities and other harmful organic pollutants produced by secondary pollution through filtration and adsorption.
2, different functions
The water purifier uses tap water as the water source. The kitchen is equipped with a special tap for pure water, which can solve water problems such as cooking when directly drinking, but the daily water production is small, which can only solve drinking and cooking. The water purifier can filter out chlorine, impurities, etc. in the tap water, and retains the minerals in the tap water that are useful to the human body.
3, the device used is different
The water purifier has a motor, needs a power supply, and has a water storage tank, generally five Grade filtration, mainly used to improve taste. The sixth level can be added to place the medical stone. The water purifier does not have a motor and a water storage tank, does not require a power supply, and relies on water pressure to drive the filtration. The better one is five-stage filtration, which is mainly used to improve the taste.
4, the water quality after purification is different
The water from the pure water machine is equivalent to the bottled pure water sold outside. If you add medical stone, it is roughly equivalent to the mineral water sold; as for the water purifier, the water that comes out is purified water with minerals in tap water that can be drunk raw. The main difference between them is whether they can filter out the harmful minerals in the water. substance.
5 Purifiers for purchase
Water yield/Model
When purchasing a water purifier, you must first understand the water output of the water purifier. There are many types of water purifiers, 50 gallons, 100 gallons, 200 gallons, etc. The water production capacity of the water purifier is expressed in gallons (GPD). For example, the 80G water purifier means that the water production capacity is 80 gallons per day, which is equivalent to 12 liters of water per hour. The 80G water purifier can be consumed by 3-6 people. Meals are completely sufficient.
With or without pump
The pump of the water purifier plays a boosting function, and the water purifier without a pump adopts a household ultra-low pressure membrane , the water inlet pressure is smaller, because the performance of the membrane is different, the purification effect is not as good as the pure water machine with a pump. In addition, the domestic tap water pressure is not stable, so you can choose a pump if you don’t use it at home. It is easy to use, and it can be used even when the water pressure is low, and the purification effect is better.
Rinse method
All water purifiers have a rinse function, which is mainly used to clean the RO membrane and protect the surface of the RO membrane. In terms of practicability and environmental protection, it is recommended to use a water purifier with manual cleaning control, because the automatic control of the water purifier with automatic cleaning is basically 10 liters of water to rinse once, which will waste a lot of water. Manual cleaning is a switch, just turn it on. Although a little troublesome, it can save a lot of water resources.
Price
The price of water purifiers varies greatly, ranging from 600 yuan to 4,000 yuan. In fact, the structure and accessories of water purifiers are basically the same. Generally speaking, it is generally no problem to choose a medium-priced water purifier, but it is recommended not to choose a water purifier below 600 yuan when purchasing, because the motor and The filter quality is still not good enough.
Brand
When purchasing, check whether the brand has a health license endorsed by the state department and whether it has passed the appraisal of the state technical supervision department. , in line with the national “Water Quality Standard for Drinking Water”. Drinking water is related to health, so when purchasing, we should first look at well-known big brands. Well-known water purifier brands are more reliable than non-brand brands in terms of water purification quality and after-sales.
6 Installation steps of pure water machine
1. Turn off the tap water source, remove the faucet, and connect the water inlet tee in the parts package to the side hole with 1/4″ electroplating Ball valve, the outlet of electroplated ball valve is connected to 1/4″PE pipe. The other end is directly connected to the original removed faucet, and the other end is connected to the original water source.
2. At the flow table near the faucet, drill a hole that can pass through the water inlet PE pipe, then connect the PE pipe from the electroplated ball valve and pass through the drilled hole, pull the PE pipe Go to the place where RO is placed in the kitchen (such as in the cabinet under the countertop), and connect it to the water inlet of the main unit. After the pipe is connected to the drilled hole, silica gel needs to be applied to prevent water seepage into the flow table.
3. Connect the 1/4″ PE pipe to the drain outlet, and lead it to the drain pipe of the management table (a small hole must be drilled for the drain pipe to insert the PE pipe).
4. Drill a 11mm hole in a suitable place on the flow table, then install the gooseneck faucet and connect the 1/4″ PE pipe to the lower end of the tooth pipe, and connect the PE pipe to the RO machine rear active carbon outlet. If you need to fix the gooseneck faucet on the wall, you can use stainless steel gooseneck hanger without drilling.
5. Connect the pressure bucket to the pressure bucket ball valve and 1/4″ water pipe joint, then connect the 1/4″ PE pipe, and the other end of the pipe is connected to the RO Corps’ activated carbon inlet. Three-way joint, and then fold the front three filter elements and put them into the filter housing according to the corresponding marks.
6. Remove the water inlet pipe of the RO membrane tube and insert it into a container, turn on the water source and plug in the power supply, so that the three pre-treated filter shells are completely filled with water and the activated carbon powder is dissolved. The water flows out, and when the black water runs out, turn off the power temporarily, and then replace the removed RO water inlet pipe, and the installation is completed at this time.
7 Maintenance of pure water machine
1. For hygiene problems inside the core, remove all cores every three months. After cleaning the dirt in the shell, the cores at all levels are directly cleaned with a tap Yes, but the installation must ensure proper sealing is better.
2. For the maintenance of each connected PE water pipe, directly unplug the port connection at one end, prepare a PE pipe for backwashing, and backwash the inside of each water pipe to ensure unobstructed flow.
3. Check whether the reverse flow valve is normal or not. Use the reverse U-turn method and try it on the PE pipe passing through the water. To check whether the high-voltage switch is normal, it is necessary to clarify the working principle of the high-voltage switch to determine whether it is normal. And the aging condition of each line connection.
4. Check whether the pressure tank is working normally? If necessary, it can be emptied, and then use the needle pump to inflate the football to replenish air. Generally, it can enter and exit the water without pumping! To clarify how the pressure barrel works.
5. Instructions for external hygiene and correct placement of the machine, checking for loose fixing screws on the base of the electric motor, and checking for wiring problems. The shaking water line and motor can be covered with cotton pad for shock absorption.
6. The core expires and must be replaced on time.
7. If it is not used for a long time, the power supply and water source should be turned off first, and then all the pure water stored in the machine should be discharged. After continuous use for several months, the pure water stored in the pure water machine should also be discharged once, which can play a role in cleaning.
8. When scrubbing the surface of the pure water machine, some neutral detergents should be used.
