城市污水厂尾水深度处理技术研究

Research Progress on Advanced Treatment Technology of Tail-water from Municipal Wastewater Treatment Plant

本文主要归纳论述了人工湿地、生物膜和物理化学三类城市污水厂尾水深度处理方法,重点阐述了尾水深度处理方法的原理、类型和主要优缺点,人工湿地系统具有污染物去除效果好、系统结构简单等优点,但是占地面积较大、受季节影响明显;生物膜法主要依靠微生物膜的代谢作用去除污染物,易受水温、pH值、溶解氧等因素的影响;物理化学方法主要通过混凝沉淀、高级氧化和过滤等方式,实现污染物的去除,希望能为相关人员提供参考。

This paper mainly summarized and discussed the advanced treatment methods of urban tail water, including artificial wetland,biofilm and physicochemical method, and focused on their principles, types, main advantages and disadvantages of the treatment methods: constructed wetland system displays good pollution removal efficiency and simple system, but it covers a large area and is obviously affected by seasonal variation;the biofilm mainly relies on the metabolism of microbial membrane to remove pollutants,which is easily affected by temperature, pH value, dissolved oxygen and other factors;physicochemical methods are mainly used to remove pollutants through coagulating sedimentation, advanced oxidation and filtration, hope to be able to provide references and suggestions.