The main process flow of Chongqing Yongchuan Phoenix Lake Industrial Park No.2 Sewage Treatment Plant is as follows

Oxidation ditch process. As a mature activated sludge wastewater treatment process, oxidation ditch process has been widely used in the whole country. It is a variant of activated sludge process, and its aeration tank is a closed ditch, so it is different from the traditional activated sludge process in hydraulic flow pattern, but a circulating flow aeration ditch connected end to end, in which sewage permeates and is purified.