METHOD OF PURIFYING WATER COMPRISING COAGULATION USING EXCESS POLY ALUMINUM HYDROXY CHLORO SULFATE

摘要

The present invention relates to a water treatment method comprising a chemical coagulation process that uses a coagulant, and more particularly to a water treatment method comprising a coagulation process that uses an excess amount of polyaluminum hydroxychlorosulfate (PAHCS) to coagulate even nonionic organic contaminants and to greatly increase coagulation efficiency. The inventive coagulation process can achieve a very stable coagulation efficiency, compared to a prior general coagulation process that uses alum, PAC, PACS or the like. Also, the inventive process can achieve a water treatment effect, including a reduction in disinfection by-products, which could be achieved only using advanced water treatment techniques (membrane filtration, ozone treatment, activated carbon filtration, etc.)