土壤渗滤系统中亚硝态氮的变化与系统运行性能的关系  

Relationship between Variation of Nitrite-Nitrogen Concentration and Removal Efficiency for Soil Aquifer Treatment Process

作　　者：张之崟[1] 雷中方[1] 张振亚[2] 杉浦则夫[2] 许晓天[3] 殷娣娣[3] 

机构地区：[1]复旦大学环境科学与工程系,上海200433 [2]筑波大学生命环境科学研究院,日本筑波3058572 [3]同济大学环境科学与工程学院,上海200092

出　　处：《复旦学报（自然科学版）》2006年第6期755-761,共7页Journal of Fudan University：Natural Science

摘　　要：土壤渗滤污水净化系统对碳、氮、磷都具有较强的净化效果,且净化机理也基本明确,但对其运行控制的研究比较少.着重探讨了土壤渗滤污水净化系统运行中的亚硝态氮积累和氨氮对亚硝态氮的抑制等问题,并提出亚硝态氮浓度可以作为指示系统正常运行的有效指标.结果表明,在试验工况条件下,低温状态或水力负荷过高、湿干比过高时,会出现亚硝态氮的积累;作为指示系统有效运行的亚硝态氮出水浓度宜控制在0.1~0.5mg.L-1之间,既保证氨氮氧化的需要,又可预防亚硝态氮积累,同时还保证了COD的去除率.The sewage purification system with soil aquifer treatment process can effectively remove carbonous,nitrogenous and phosphorous pollutants,and the purification mechanisms are also well understood.However,there are still few researches on the operation and control of soil aquifer treatment process.It is focused on the phenomena of nitrite-nitrogen accumulation and ammonia inhibition to nitrite-nitrogen,encountered in the operation of sewage purification system with soil aquifer treatment process,and the conc...

关 键 词：土壤渗滤系统 亚硝态氮 脱氮 

分 类 号：X703[环境科学与工程—环境工程]