Drinking Water Treatment Technology

As water pollution becomes more and more serious, a large number of pollutants, especially organic pollutants, enter water bodies in different ways, and drinking water sources are increasingly polluted. Traditional tap water processes such as coagulation, filtration, and disinfection are mainly to remove suspended solids, turbidity, and chroma in sewage, and their ability to remove dissolved organic matter is relatively insufficient. Polyaluminium chloride powder is a very common flocculant. Moreover, chlorination disinfection itself also forms a "three-factor substance" (Carcinogenic, teratogenic, mutagenic), directly affecting the health of the drinker. Therefore, the most possible removal of trace organic pollutants and disinfection by-products in the water is the purpose of deep purification of drinking water. Advanced treatment of water is more common in foreign countries. my country's research on drinking water treatment technology is still in its infancy. Most old water plants have not adopted advanced treatment, and only some new water plants have adopted advanced treatment. People have developed many technologies such as activated carbon adsorption, ozone oxidation, combined use of ozone and activated carbon, and various membrane technologies for advanced treatment of drinking water.

Polyaluminium Acid Used as Flocculant In Drinking water Treatment

As an inorganic polymer coagulant, due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions, the characteristic of inorganic polymer water treatment agent with larger molecular weight and higher electric charge is mainly caused by pressure The working principle of the type atomizer is determined. Its main functions are as follows. Strong electrical neutralization of colloidal substances in water. The hydrolysate has excellent bridging and adsorption of suspended solids in water. Selective adsorption of soluble substances. Our annual production of polyaluminium chloride can reach 70000 tons, including 40000 tons of drinking water grade PAC and 30000 tons of industrial water grade PAC. If you need this chemical, Fengbai company can help you.

Ozone activated carbon treatment

Ozone can destroy pathogenic microorganisms and can ensure thorough disinfection without the production of toxic by-products. The use of ozone disinfection instead of chlorine disinfection can prevent the generation of organic chlorides and directly remove organic chlorides in the water. However, studies have found that the oxidation of ozone has strong selectivity, and it has almost no effect on removing the chloroform that has formed in the water. At the same time, ozone will cause the increase of biodegradable substances in the water. The consequence of the increase of biodegradable substances will cause the reproduction of bacteria in the water supply pipe network and reduce the biological stability of the effluent of the water plant. Therefore, ozone is rarely used alone in drinking water treatment processes.

Combined use of ozone and activated carbon filter. This drinking water treatment process is based on the activated carbon's ability to effectively remove small molecular organics in water, but the removal of large molecular organics is limited. The water is first oxidized by ozone to decompose macromolecular organic matter in the water into small molecular organic matter, which increases the possibility of organic matter entering the micropores of activated carbon, makes full use of the adsorption surface of activated carbon, and prolongs the life of activated carbon. At the same time, the subsequent activated carbon can absorb a large number of intermediate products produced in the ozone oxidation process, including chloroform, which can not be removed by ozone, and ensures the biological stability of the final effluent.

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