The application of improved A2/O oxidation ditch in municipal sewage treatment

In recent years, the research of nitrogen and phosphorus removal in sewage has been a hotspot in the field of wastewater treatment at home and abroad with the worsening of the world-wide eutrophication of water bodies. Improved A²/O oxidation ditch of Wulongkou sewage treatment plant in Zhengzhou has achieved good effect to remove organic matter, nitrogen and phosphorus in sewage. Based on the operation practice, this article makes a detailed introduction of the technology components, technology parameters, structure and nitrogen and phosphorus removal mechanisms of improved A²/O oxidation ditch technology. According to the operational effect in this sewage treatment, the paper discusses the probable problems and solving measures during the operation of improved A²/O oxidation ditch technology, so that the technology can be applied in a better and wider way.