Wastewater treatment process is a combination of the process methods used in a certain sewage treatment .
Usually according to the quality and quantity of sewage , Economic value of recycling , Emission standards and other societies , economic condition , After analysis and comparison , When necessary , Experimental studies are also needed .
Sewage treatment technology is a kind of economy for urban domestic sewage and industrial wastewater , reasonable , science , Effective technology . Sewage treatment is widely used in construction , Agriculture , traffic , energy , petrifaction , environment protection , Urban landscape , medical care , Catering industry .
Sewage treatment is divided according to treatment degree , It can be divided into one level , Secondary and tertiary treatment . Primary treatment , It belongs to physical treatment , It mainly removes suspended solid pollutants in sewage .