上海某水质净化厂氮磷达标改造工程实践

Project Practice of Up-to-standard Reconstruction of a Water Purification Plant in Shanghai for Nitrogen and Phosphorus Removal

针对上海某水质净化厂氮磷达标改造工程的特点和要求,将原传统活性污泥处理工艺改造为多点进水倒置A^2/O工艺,介绍改造方案、工艺流程和主要构筑物设计参数。改造工程实施、运行后,出水水质稳定达GB 18918-2002一级A标准。该工程可为老厂氮磷达标改造提供参考与借鉴。

According to the characteristics and requirements of nitrogen and phosphorus up-to-standard reconstruction project in a water purification plant of Shanghai, traditional activated sludge treatment process is transformed into a inverted A2/O process with step feed. The reconstruction scheme, design process and main structure design parameters are introduced to the project. Every index of its effluent can reach the first class A of GB 18918--2002. This project can provide reference and experience for the nitrogen and phosphorus up-to-standard reconstruction of the old plants.