HezhouWanggao sewage treatment plant upgrade project is located in HezhouWanggao industrial zone, pinggui management district, HezhouCity. The designed treatment scale of the project is 20000 tons/day, and the process of "hydraulic clarification tank +NCMT biochemical tank" is adopted. The final effluent was satisfactory with Chinese Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002).