上海市泗塘污水处理厂脱氮除磷达标改造工程实践

Project Practice of Up-to-standard Reconstruction of Sitang Wastewater Treatment Plant for Phosphorus and Nitrogen Removal in Shanghai

在对泗塘污水处理厂现有处理工艺优化诊断基础上,指出了该厂升级改造的瓶颈所在,介绍了污水处理厂达标改造的原则,比较论证了分点进水倒置A/A/O、生物除磷+辅助化学除磷工艺和分流处理工艺两个方案,介绍了工艺除臭及尾水消毒措施。该工程为老厂脱氮除磷工艺改造提供了一套完整的技术方案和工作流程,出水水质能稳定达标。

Based on the optimization and diagnosis of the existing treatment process in Sitang WWTP, the bottle neck of upgrading reconstruction of the plant was pointed out, and the principle of upto-standard reconstruction of WWTP was introduced. Inverted A/A/O process with step feed for biological phosphorus removal with supplement of chemical phosphorus removal and diffluent treatment process was compared, and deodorization and disinfection of the existing treatment process were improved and optimized. The project provides a whole set of technical scheme and operating flow sheet for the reconstruction of nitrogen and phosphorus removal process in old plants. The effluent quality can steadily fulfill the standard.