1上海市 45000m3/d 城市生活污水处理厂设计摘 要：本设计要在上海市建立一座生活污水处理厂，最大日处理量为 45000m3。针对上海面临的状况，并结合对进水水质的分析和多种水处理工艺的对比，最终明确了本次设计方案采用 CASS 工艺。CASS 工艺运行灵活，具有良好的脱氮除磷效果，生化反应推动力大，同时，产生的污泥量较少，降低了后期污泥处理工作的压力。本设计详细阐述了CASS 工艺的处理流程，并得出了各构筑物的设计计算参数。经过 CASS 工艺处理之后，污水中的 BOD5、CODCr、TN、TP 等含量均达到《城镇污水处理厂污染物浓度排放标准》一级 B 的排放标准要求，去除率较高。关键词：污水处理；CASS 工艺；接触消毒池；一级 B 标准A municipal sewage treatment plant in shanghai 2Student majoring in Environmental Engineering Jiang LikunTutor Name Zhang XiaomeiAbstract: A municipal sewage treatment plant is designed in Shanghai. The maximum daily amount of treatment is 45000m3. In accordance with the current situation faced to the Shanghai, According to the analysis of the water quality and the comparison of various water treatment processes. CASS process is adopted for biochemical treatment in this design. CASS process is flexible. The effect of denitrification and dephosphorization is good. The bio-reaction motive force is greater. Also, the less sludge is produced, the less stress you have to deal with. This design elaborates the treatment flow of CASS process, and obtains the design and calculation parameters of each structure. After processing, The effluent water quality including BOD5, CODCr, TN, TP can reach the first class B discharging standard of “Discharge standard of pollutants for municipal wastewater”. Keywords: Sewage treatment; CASS process; Contact sterilizing tank; first class B standard引言随着城市化进程的加快，人们生活水平的提高，城市生活污水的产生也随 3之巨幅增长。众所周知，目前全世界可用淡水资源相当稀少，为了缓解水资源...
