Water pollution is caused by harmful chemicals that reduce or lose the use value of water and pollute the environment. When the organic matter in sewage is decomposed by microorganisms, the oxygen in water is consumed and the life of aquatic organisms is affected. When the dissolved oxygen in water is exhausted, the organic matter is decomposed anaerobic, producing hydrogen sulfide, mercaptan and other unpleasant gases, which further worsens the water quality.

What is the water pollution solution? Biological purification is an important means of environmental treatment, which is a water pollution treatment method in accordance with China's national conditions. Types of biological treatments include: sedimentation treatment; Aquaculture of aquatic organisms; Biological weighing pond method; Activated sludge method; Biofilm method; Biological contact entitlement method; Land treatment system; Immobilized cell method. The price is relatively expensive. Neutralization method for treating acidic or reductive wastewater by neutralization; The use of liquid chlorine, ozone and other strong oxidants oxidation decomposition of pollutants in wastewater chemical oxidation method: the use of the principle of electrolysis, oxidation and reduction in the Yin and Yang poles, respectively, so that the water purification of electrolysis method.

Comprehensive planning, rational distribution, regional comprehensive governance. Water pollution should be considered in the formulation of regional planning, urban construction planning and industrial planning, and preventive measures should be taken to prevent possible water pollution. Put an end to arbitrary discharge of industrial waste water and municipal sewage, and set standards. The waste water in the same industry should be treated centrally to reduce the number of pollution sources and facilitate management. Finally, the polluted water bodies should be treated in a planned way.