Mingguang city, east of the city sewage treatment plant and located in mingguang city east chemical industry clusters, the campus has three trees paint co., LTD., anhui anhui south star new material technology co., LTD., anhui HengGuangXin materials technology co., LTD., anhui widely into big companies such as new materials technology co., LTD., the first phase of day processing 20000 tons of sewage have been unable to meet the current needs.  The second phase of the project was completed at the end of 2020 and ready to be put into use. In February 2021, nitrifying bacteria were purchased from our company, with 4 tons of denitrifying bacteria each, and put into biochemical ponds together with activated sludge. After one week of domestication, the bacteria were successfully attached to the membrane, and the effluent index was stable.