地下渗滤系统脱氮的研究进展

Research Progress in Nitrogen Removal Effects of Subsurface Infiltration System

地下渗滤系统基于循环再生等生态学原理,在深度处理生活污水的同时,出水可二次回用,但脱氮问题一直没得到很好的解决.为了促进地下渗滤处理技术的快速发展,本文主要对地下渗滤系统的特征、除污原理以及地下渗滤系统脱氮作用的强化措施(如改善系统的氧化还原环境及二次布水等)进行了综述.建议采取适当的基质改良措施,科学改善系统内部的氧化还原环境,同时采用二次补水等技术强化系统脱氮.

Subsurface infiltration system is based on the ecological principles of recycling and reusing the wastewater, harmonious with the environment, unified and differencing with the positions. This kind of technology can not only remove most of the pollutants in domestic wastewater, but also has high reusing rates. However nitrogen removal by it is frequently problematic. In order to promote the technical innovation of the system and its wide application in China, providing a scientific and technical basis for the system implementation, analyzing the reasons for low nitrogen removal rates, a discussion is made on the corresponding measures in this paper. The process and principles of nitrogen removal are introduced. Finally, it is suggested that the substrate renovation methods should be adopted as the first way to raise nitrogen removal rates, improving the redox environment. The intermediate distributary＇s technology is another way to enhance nitrogen removal effects.