Water treatment agents are chemical agents required for industrial water, domestic water, and wastewater treatment processes. Through the use of these chemical agents, water meets certain quality requirements. The main function of water treatment agent is to control the formation of scale and sludge, reduce foam, reduce corrosion of materials in contact with water, remove suspended solids and toxic substances in water, deodorize, decolorize, soften and stabilize water. Water treatment agents can be divided into corrosion inhibitors, scale inhibitors, cleaning agents, flocculants, bactericidal and algal agents, cleaning agents, pre film agents, etc. Water treatment agents are widely used in industries such as chemical, metallurgical, mechanical, light industry, textile, printing and dyeing, construction, medicine and health.