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China is facing a water crisis. Its per capita water supply is significantly lower than the global average, but its demand for water is astronomical. Both industry and agriculture use massive amounts of water – and create massive water pollution.[1]Water pollution is caused by the use of harmful chemicals to reduce the value of water or loss of water pollution of the environment. Acid, alkali, oxidants, and copper, cadmium, mercury, arsenic and other compounds, benzene, dichloroethane, ethylene glycol and other organic drugs, will poison the aquatic organisms, affecting drinking water, scenic landscape. Wastewater in the organic matter is microbial decomposition of the consumption of oxygen in the water, affecting the lives of aquatic life, dissolved oxygen in the water depletion, the organic matter anaerobic decomposition, resulting in hydrogen sulfide, mercaptans and other unpleasant gases, so that further deterioration of water quality. China is facing a water crisis. Its per capita water supply is significantly lower than the global average, but its demand for water is astronomical. Both industry and agriculture use massive amounts of water – and create massive water pollution.