摘要
复合垂直流渗滤系统是一种新型的污水土地处理技术。通过对复合垂直流渗滤系统的模拟,揭示了该系统非生物作用与生物作用对氮的降解机制。并通过在系统中添加新型球形填料考察其对系统污染物去除的影响。结果表明,系统对污水中氮的降解是以生物作用为主,非生物机制为辅;氮转化以硝化效果为主,反硝化效果比较弱。球形填料能大大提高系统对污染物的去除能力。硝化-反硝化能力随着球形填料填充比的增加而提高。当氨氮浓度、硝态氮浓度较高时,硝化速率、反硝化速率均表现为零级。
Integrated vertical flow infiltration system is a new type of wastewater land disposal technique. The results showed the contribution of biodegradation and a biotic-interception to nitrogen removal in integrated vertical flow infiltration system by asepsis experimentation and the effect of system after adding spherical shape fillings. The results showed that biodegradation was the main process while a biotic-interception was the second important process in removal of nitrogen. Nitrogen transformation was mainly result of nitrification, and denitrification was relatively weak in the integrated vertical flow infiltration system. Practical work showed that the removal rate can be enhanced after adding spherical shape fillings in integrated vertical-flow infiltration system.
出处
《水处理技术》
CAS
CSCD
北大核心
2009年第4期43-47,共5页
Technology of Water Treatment
基金
国家"十五"攻关重大项目(2003BA808A17)
关键词
污水处理
复合垂直流渗滤系统
硝化反硝化
球形填料
wastewater treatment
integrated vertical flow infiltration system
nitrification-denitrification
spheric shape fillings
