1上海合流污水治理一期工程概况上海合流污水治理一期工程包括出口截流泵站52座、中间泵站一座（即彭越浦泵站PYP泵站）、预处理场一座及泵站一座。污水和雨水由分布于各区的截流泵站排入合流总管后流入彭越浦泵站，经提升后送入压力箱涵进入预处理厂，污水经预处理后由出口泵 1 Shanghai Convergence Sewage Treatment Phase I Project Overview Shanghai Convergence Sewage Treatment Phase I project includes the export of shut-off pumping station 52, a pumping station (ie PYP pump station Peng Pengpu), a pre-treatment field and a pumping station. Sewage and rainwater are discharged into confluence mains from shut-off pumping stations distributed in various districts and then flow into Peng Yuepu pumping station. After being upgraded, the sewage and rainwater will be sent to the pre-treatment plant for pressure tank culverts. After pre-treatment,