关于CASS池中脱氮除磷制约因素平衡控制的综述

Balance Control of Restrictive Factors For Nitrogen and Phosphorus Removal in CASS Abstact

水体富营养化是世界性问题,污水中的氮和磷是导致受纳水体富营养化的主要原因之一。生物污泥由硝化菌、反硝化菌、除磷菌以及其它多种微生物组成,由于不同菌的最佳生长环境不同,脱氮与除磷之间存在着矛盾。实际应用中经常出现脱氮效果好时除磷效果较差,而除磷效果好时脱氮效果不佳。因此,常规生物脱氮除磷工艺流程存在着影响该工艺有效运行的相互影响和制约的因素。如何有效的平衡控制,使得脱氮除磷都达到最好效果,有着现实意义。

Eutrophication of the water body is a worldwide problem. Phosphorus and nitrogen in the sewage is one of the important reasons that cause Eutrophication of the receiving water body. Sewage sludge are composed of nitrifying, denitrifying, phosphorus removal and many other microorganism. Each bacteria has its own optimal growing environments, therefore it is difficult to remove phosphorus and nitrogen simultaneously. In practice, the current technologies often failed to remove phosphorus or nitrogen. Actually, there are factors that should be taken into account to make the conventional process of biological nitrogen and phosphorus removal effectively. It has great significance to reach a compromise between the phosphorus removal and nitrogen removal.