The water treatment agent used for water treatment chemicals. Usually used for chemical wastewater treatment. Also widely used in chemical, petroleum, light industry, chemical, textile, printing and dyeing, building,  metallurgy, machinery, medicine and health, transportation, urban and rural environmental protection industries.

Water treatment agent is required the use of process water, living water, industrial wastewater process. Through the use of water treatment agent , the water reached a certain quality requirements. Water treatment agent‘s main function is to control the scale, the formation of sludge, reducing the bubble, reduce the corrosion of materials in contact with water, remove suspended solid water and toxic substances, deodorization and decolorization, softening and stable water quality etc. Therefore, water treatment agent including coagulant, flocculant, scale inhibitor, corrosion inhibitor, bactericide, dispersing agent, cleaning agent, pre filming agent, defoaming agent, bleaching agent, chelating agent, deoxidizing agent and ion exchange resin.

Water treatment chemicals in China is the introduction of large chemical fertilizer plant in 70 years before attention and gradually developed; since then, developed a series of water treatment agent. At present, the variety of water treatment agent in our country are mainly the scale inhibitor, corrosion inhibitor, bactericide and algicide, inorganic coagulant, organic flocculant and other categories. After a long-term development, the emergence of a high level of production technology and equipment, the scale of production and management of enterprises.

Water treatment agent which belongs to fine chemical industry category, compared to the commonly used chemicals, many of which has the property of fine chemicals:
1 generally small scale of production, so the plant less equipment investment, small production;
2 product variety, variety update quickly;
3 additional value;
4 Technical services is essential;
5 kinds of products, especially the compound product, has a highly specialized.

Nowadays ,Function of water treatment agent is emerging from simple to develop in the direction of multifunctional composite. So the multi-functional compound in the process of development of water treatment agent, requires both agent of economy, efficiency, pleiotropic, safety, also want to consider the end result will not produce new problems, to adapt to the requirements in different environments.