上海市石洞口污水处理厂提标改造工程设计

Process Design for Upgrading and Reconstruction of Shanghai Shidongkou WWTP

对上海市石洞口污水处理厂进行提标改造设计,主要解决日常污水溢流、生物反应池浑水排放及出水水质一级A提标三大核心问题。其中溢流污水及生物反应池浑水问题通过新建综合池得到有效解决;通过新增"高效沉淀池+反硝化深床滤池"深度处理组合工艺实现出水TP、TN、SS等达标。同时,通过增设污泥杂质分离设备及对现状储泥池的原位改造解决了剩余污泥杂质含量高的问题,并通过切换闸门井设计优化、现状加氯消毒池和出水箱涵的改造而成功实现了污水厂不停水施工。

Shanghai Shidongkou WWTP has been upgraded and reconstructed mainly to solve three problems ： the daily wastewater overflow, the backflow from the biological reaction tank and the upgrading requirement of effluent to first level A criteria of GB 18918 -2002. The integrated tank was designed with the function of both storage of overflow wastewater and purification of the backflow from the biological re- action tank. Effluent quality indexes of TP, TN and SS were upgraded through the combined tertiary treatment process of ＂high-efficiency sedimentation tank ＋ denitrification filter＂. Besides, the problem of high content of impurities in excess sludge was solved by adopting separation equipment and in situ re- construction of the sludge storage tank. And then, project measures like optimizing the design of the switching gate shaft, retrofitting the existing chlorine disinfection tank and the sewage box culvert ensured the non-stop construction of the WWTP.