The household water purifier first appeared in China in the 1980s. Its function is to filter the tap water of the city and remove harmful substances such as large particles of impurities, heavy metals and bacteria in the water. At present, there are common kitchen water purifiers, faucet water purifiers, and portable desktop net water bottles. The first two purification objects are urban tap water, and the net water bottle is generally used to purify drinking water in the office.
The principle of the water purifier
There are four main methods for water quality treatment. One is activated carbon-based medium filtration method (such as activated carbon/PP cotton filter), and the other is microfiltration, ultrafiltration, nanofiltration and reverse osmosis membrane separation. It is a physicochemical disinfection method based on sterilization (such as UV disinfection), and the fourth is a water quality regulation method based on softening and electrolysis. Which methods are used depends on the conditions of use.
So how do you buy a water purifier?
1. According to the water quality, the water quality of different regions will have a big difference. In some areas, the pollution is serious, the chlorine gas is seriously exceeded, and even the sand can be seen with the naked eye. It is useless for the installation of a good water purifier in this area, and it is easy to cause the water purifier to become clogged. In this type of area, we need to install a pre-filter when purchasing a water purifier.
2. According to the application, choose different water purifiers for different purposes, such as RO reverse osmosis membrane water purifier, kitchen water selection ultrafiltration membrane water purifier, and central water purifier is suitable for the whole family. The initial clean water. I have shared with you in the household water purifier category. If you need very pure water for industrial or other places where water quality is very high, it is recommended to choose a grade 8 filtered water purifier.
3. According to factory after-sales service After-sales water purifiers account for 50% of the value of the water purifier, so after-sales is very important. Some brand water purifiers only have after-sales maintenance points in some areas. When we purchase water purifiers, it is best to buy after-sales maintenance points near the home, so that the after-sales service is faster and better. Otherwise it will bring you a lot of trouble.
The water purifier must not be less than a few configurations
Low voltage protection
Avoid the situation that the pump has been idling due to water stoppage and protect the service life of the pump. Note: The self-priming pure water machine has no low pressure protection; as the technology increases, some water purifier pumps have low voltage protection, so the low voltage protection switch is no longer needed!
2. Influent protection
Influent protection is a very important part. The water purifier opens the waterway when it starts to produce water, and closes the waterway when the machine stops making water.
3. Wastewater protection
1. When the water machine is flushing, make sure that the waterway is fully open, so as to better rush out the material retained by the reverse osmosis membrane, thereby protecting the life of the reverse osmosis membrane.
2. When the water mechanism is water, another wastewater channel is opened to maintain pressure, so as to better ensure the water production.
4. High voltage protection
The high pressure protection is to ensure the stable shutdown of the machine when the pure water is full, to avoid the machine not stopping, and thus the pressure barrel explosion.
5. Pump constant pressure protection
Because the reverse osmosis membrane should reach the pre-membrane pressure of 6~8 kg to normal water, the water pressure before the membrane is constant first, so that the effluent is constant, and the life of the reverse osmosis membrane is better.
Precautions during use
1. If the product is found to be abnormal or unclear during use, please call the regional sales service center or customer service.
2. Always keep the ultrafiltration membrane filter in a wet state after use. If the ultrafiltration membrane filter is dried, it will cause a sharp drop in water production and cannot be recovered.
3. When the water purifier fails, immediately close the tap water inlet valve and cut off the water in the water purifier. Do not disassemble it.
4. Do not use the water purifier for more than three days. When using it again, the water purifier should be rinsed repeatedly for 2-5 minutes until the water in the water purifier is drained.
5. Frequently flushing the water purifier can effectively extend the service life of the water purifier.
6. With the long-term use of water purifiers, the water production will gradually decline, but the water quality is still qualified, and can be used with confidence.
7. In the case of running water in the tap water, please open the sewage faucet to drain the sediment, rust, etc. in the water pipe, and then open the purified faucet to use the purified water.
8. It is best to replace the filter element with a local service center or under the guidance of a local service center professional service person. In these nine aspects, I must pay attention when using the water purifier. The life of the water purifier will be significantly improved, which can save me a lot of money.
9. The total water production of the water purifier is related to the influent water quality of the water purifier. If the influent water quality of the water purifier is good, the total water production will increase. If the influent water quality is poor, the total water production will decrease. The filter life will be slightly shorter.
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