1. activated carbon adsorption process: activated carbon mainly depends on adsorption and filtration to remove heterocolor, odor, residual chlorine, residual disinfection and other organic impurities in water.

2. film microporous filtration process: film microporous filtration method includes three forms: deep filtration, screen filtration, surface filtration.

Deep filtration is a more economical way to retain particles by means of inert adsorption or capture, and is usually used as a pretreatment.

Surface filtration is a multi-layer structure. When the solution passes through the filter membrane, the particles with large pores inside the filter membrane will be left, mainly deposited on the surface of the filter membrane, and can also be used as pretreatment or clarification.

The SIEVE membrane is like a sieve, which leaves particles larger than the pore size on the surface and is generally placed at the end use point of the purification system to remove trace amounts of resin flakes, carbon chips, colloids and microorganisms.

3. Ion exchange process: the principle of ion exchange method is to exchange the anions and cations of inorganic salts in water with ion exchange resin, so that the anions and cations in water exchange with the anions and cations in the resin, so that the water is purified.

4. EDI pure water treatment process: a new deionized water treatment method, also known as continuous electric desalting technology, EDI device will ion exchange resin filled between the anion/cation exchange membrane to form EDI unit, no need to use acid and base for resin regeneration, good environmental protection.