针对污水处理厂进水SS浓度较高和进水生物难降解化合物较多的问题，提出将均质池部分改建成初沉池和新建催化还原池方案，可显著提高污水的可生化性，最大限度地降低后续生化处理的负荷；同时针对现有SBR池出水氨氮较高的问题，利用原有均质池的剰余空间，为SBR池设置附加曝气池。对改造前后的出水水质进行了对比分析，结果表明，改造后的出水水质指标明显降低，工艺运行稳定高效，抗冲击负荷能力强，出水水质稳定达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级B标准，大部分指标优于一级A标准。

Shanghai Taopu Wastewater Treatment Plant was built in 1990s.The objectives of its upgrading and renovation are to make its effluent meet the first level B criteria of GB 18918-2002.Given the problems in the plant such as high SS concentration and non-biodegradable organics in influent,a scheme is proposed that a part of homogeneous pool is reconstructed into an initial sedimentation pool and a new catalytic reduction pool is constructed,which can significantly improve the biodegradability of sewage and minimize the load of subsequent biochemical treatment.Besides,additional aeration pool is proposed for sequencing batch reactor (SBR) pool by using the remaining space of former homogeneous pool so that high concentration of nitrogen in effluent can be eliminated.The comparative analysis of the treatment effect is made before and after the upgrading and reconstruction.The results show that after renovation,the contents of pollutants in effluent drop significantly,the process runs stably and efficiently with high resistance to shock loading,and the effluent quality can meet the first level B criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) with most of the indexes superior to the first level A criteria.