The first level: PP cotton: removes all kinds of visible matter in the tap water / dust and impurities.
Second and third level: front activated carbon: part of the third level of the low-cost water purifier is also PP cotton, carbon to remove chlorine and organic impurities. It also absorbs odors, colors and smells produced by organic compounds in the water.
The fourth level: ultrafiltration or reverse osmosis membrane: the membrane can remove bacteria, viruses and spores and other substances in the water.
Fifth level: Post-activated carbon device: further improves taste and removes odors.
Water purifier, also known as water purifier, water purifier, is the use of water according to the requirements of the water quality of the depth of filtration, purification and treatment of water treatment equipment. Normally speaking of water purifier, generally refers to small purifier for home use. The core of its technology for the cartridge device in the filter membrane, the current main technology from the ultrafiltration membrane, RO reverse osmosis membrane, nanofiltration membrane three.
Expanded Information:
Water purifiers can be divided into two major categories: gradual tightening of the design level of the pipeline water purifier and self-cleaning water purifier. The traditional water purifier is a gradual tightening of the water purifier, its internal piping design cartridges loose before and after the tightening of the PP meltblown cartridges, granular carbon, compressed carbon, RO reverse osmosis membranes or ultrafiltration membranes, after the activated carbon, generally this 5-level sequential first and last composition.
The intercepted material is deposited inside the cartridge, which needs to be dismantled and washed manually on a regular basis to ensure the normal operation of the machine. Another category is more advanced self-cleaning water purifier, machine design two channels, adding a washing water path.
Ordinary ordinary domestic water washing water through the pathway to the machine cartridge, especially the membrane cartridge of the raw water side to play a scouring to achieve the role of self-cleaning, and the use of opening and closing the washing faucet at the moment, that is, the head and tail section of the two sections of the water that would have flowed away from the intercepted dirt in a timely manner and quickly discharged, the structure of this reasonably well-designed, eliminating the need for manual dismantling the trouble of washing and dispensing with the organization's own re-contamination, while, at the same time, reducing energy consumption costs. At the same time, it also reduces the cost of energy consumption.
Reference: