Summary description： Mingtai Industrial Park is a comprehensive industrial park integrating office buildings, single apartments, hotels and restaurants. At present, there are fewer enterprises and fewer people in the park. In order to treat the catering wastewater from office buildings, apartments and canteens in the park, the daily treatment capacity is designed to be 50 tons. The pwt-a-50 equipment independently developed and produced by Huayu brilliant is adopted, and anoxic + aerobic + MBR is adopted The effluent meets the national integrated discharge standard of pollutants for municipal wastewater treatment plant, and solves the problem of scattered discharge of sewage. The effluent is collected and used as the supplementary water for greening in the park.