分段进水A/O工艺生物脱氮技术分析

Analysis of A/O Step Feed Biological Denitrogenation Process

分段进水缺氧/好氧(A/O)工艺是一种高效的污水生物脱氮工艺,在此主要介绍了分段进水生物脱氮工艺的系统工作原理及工艺特性,探讨了该工艺运行操作和设计的几个重要影响因素,如进水流量分配比、溶解氧、污泥回流比、C/N比等,并且对分段进水最高理论脱氮率进行了描述。

Step feed anoxic oxic （A/O） process is an attractive biological nitrogen removal system for wastewater treatment. This paper reviews the principle and characteristics of step feed biological nitrogen removal process. Some important factors about the operation and design of the process, such as influent flow distribution ratio, dissolved oxygen, sludge recycle ratio and the ratio of C and N are discussed.The highest theoretical nitrogen removal rate in step feed process is described as well.