Sewage treatment is a variety of economical, reasonable, scientific and effective treatment methods for domestic sewage, industrial wastewater and urban sewage, so that it can meet the specified discharge standards and prevent water pollution. Sewage treatment is widely used in wastewater treatment in various fields such as life, printing and dyeing, papermaking, electroplating, petrochemical, aquaculture, slaughter, meat processing, medical treatment, catering, and more and more into the daily lives of ordinary people.

Classification of common sewage treatment methods

Physical method: physical or mechanical separation process. Filtration, precipitation, centrifugal separation, floating, etc.

Chemical method: The conversion process in which chemical substances are added and harmful substances in sewage are chemically reacted. Neutralization, oxidation, reduction, decomposition, coagulation, chemical precipitation, etc.

Physicochemical method: The separation process of physical chemistry. Gas stripping, stripping, adsorption, extraction, ion exchange, electrodialysis, reverse osmosis, etc.

Biological method: The metabolic process in which microorganisms oxidize and decompose organic matter in sewage. Activated sludge, biological filter, biological turntable, oxidation pond, anaerobic digestion, etc.