Wastewater treatment plant

Urban sewage treatment refers to the process of removing or converting pollutants from urban sewage into harmless substances through a series of technologies and methods, in order to protect the environment and water bodies from pollution. ‌

The main methods and processes of urban sewage treatment

Urban sewage treatment is generally divided into three levels:

Primary treatment: Apply physical treatment methods to remove insoluble pollutants and parasitic eggs from wastewater.

Secondary treatment: Applying biological treatment methods to oxidize and degrade various complex organic compounds in wastewater into simple substances.

Third level treatment: using chemical precipitation method, biochemical method, physical and chemical method, etc., to remove phosphorus, nitrogen, difficult to degrade organic matter, inorganic salts, etc. from sewage