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...
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2006年第6期755-761,共7页
Journal of Fudan University：Natural Science
关键词
土壤渗滤系统
亚硝态氮
脱氮
soil aquifer treatment system
nitrite-nitrogen
nitrogen removal
