What are the primary treatment processes of Qingdao Haibo River sewage treatment process?

Regulating tank, coarse grid and fine grid, grit chamber, primary sedimentation tank, air flotation tank and hydrolytic acidification tank. According to the data of sewage treatment, the primary treatment process of Qingdao Haibo River sewage treatment process includes regulating tank, coarse grid and fine grid, grit chamber, primary sedimentation tank, air flotation tank and hydrolytic acidification tank. The sewage treatment process is divided into three levels: the first level: physical treatment, mechanical treatment, such as grid, sedimentation or air flotation, to remove stones, sand, fat, grease and so on contained in sewage. Secondary treatment: biochemical treatment. Pollutants in sewage are degraded by microorganisms and converted into sludge. Tertiary treatment: advanced treatment of sewage, including removal of nutrients and disinfection by chlorination, ultraviolet or ozone technology. According to the different treatment objects and water quality, some sewage treatment processes do not include all the above processes.