Domestic sewage treatment technology

Domestic sewage treatment process

　　The domestic sewage treatment technology of Liquor District is developed on the basis of traditional urban sewage treatment technology. The conventional secondary biological treatment processes of urban sewage mainly include: oxidation ditch technology, SBR process (series), BAF process, A2 / O process, biological treatment, artificial wetland process, etc. According to the characteristics of the community and its sewage, the general sewage treatment facilities in the general community should have reasonable technological processes and stable treatment effects. Integrated facilities should be used, and buried treatment should be used as much as possible. Coordinate and minimize secondary pollution such as odor, noise, and sludge.

　　The purpose of domestic sewage advanced treatment is to further remove suspended (SS), organic matter, nitrogen, phosphorus and other nutrients and soluble inorganic salts in sewage. According to the different purposes of sewage reuse and underground conditions, the treatment process and process are also very different. The sewage advanced treatment process usually has the following categories: (1) coagulation, clarification, and filtration methods; (2) direct filtration method; (3) microflocculation filtration method; (4) contact oxidation method; (5) biological rapid filtration Pool method; (6) fluidized bed biological oxidation method; (7) activated internal carbon adsorption method; (8) membrane filtration technology (ultrafiltration, nanofiltration, etc.); (9) biofilm technology, etc.