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What are the types of pure water treatment processes?
分類：Common Problem 時間：2020-12-07 09:39:11
There are several methods for pure water treatment process:
1. Activated carbon adsorption process
Activated carbon relies on adsorption and filtration to remove organic impurities such as color, odor, residual chlorine, and residual disinfectant in the water.
2. Membrane microporous filtration process
Membrane microporous filtration includes three forms: depth filtration, mesh filtration, and surface filtration.
Depth filtration uses inert adsorption or capture methods to retain particles, which is a relatively economical method and is usually used as a pretreatment.
Surface filtration is a multi-layer structure. When the solution passes through the filter membrane, particles with larger pores than the inside of the filter membrane will be left behind, which are mainly accumulated on the surface of the filter membrane. It can also be used for pretreatment or clarification.
The sieve filter membrane is like a sieve. The particles larger than the pore size are left on the surface and are generally placed at the final use point in the purification system to remove residual traces of resin flakes, carbon chips, colloids and microorganisms.
3. Ion exchange process
The principle of the ion exchange method is to exchange the inorganic salt anions and cations in the water with ion exchange resins to exchange the anions and cations in the water with the anions and cations in the resin, thereby purifying the water.
4. EDI pure water treatment process
A new deionized water treatment method, also known as continuous electric desalination technology. The EDI device fills the ion exchange resin between the anion/cation exchange membranes to form an EDI unit, and does not need to regenerate the resin with acid and alkali, which is environmentally friendly. Good sex.
5. Reverse osmosis pure water treatment process
Reverse osmosis uses pressure as the driving force and uses the selectivity of reverse osmosis membranes to only permeate water but not solutes to extract pure water from the water body. The reverse osmosis membrane has a strong screening effect, its desalination rate is as high as 99%, and the sterilization rate is greater than 99.5%. It can remove impurities such as inorganic salts, sugars, amino acids, bacteria, viruses, etc., and is a better pretreatment method for ultrapure water systems.
6. Ultrapure water treatment process for ultraviolet and ozone sterilization
Ultraviolet rays can effectively kill bacteria and degrade organic matter.
The molecular structure of ozone is unstable at normal temperature and pressure, and it quickly decomposes into oxygen and a single oxygen atom by itself, which has strong activity. It also has a strong oxidizing effect on bacteria, killing them, and the excess oxygen atoms will recombine themselves into ordinary oxygen atoms without any toxic residues, so it is called a pollution-free disinfectant.
