土壤渗滤系统中土壤酶活性与系统脱氮效果的关系研究  

Relationship between Soil Enzymatic Activities and Nitrogen Removal in Soil Infiltration Treatment System

作　　者：黄映恩[1] 雷中方[1] 张振亚[2] 杉浦则夫[2] 

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

出　　处：《复旦学报（自然科学版）》2009年第1期94-99,共6页Journal of Fudan University：Natural Science

基　　金：JST战略的国际科学技术协力推进事业资助项目(ADD19196)

摘　　要：研究了土壤渗滤系统污水脱氮效果及其与内部酶活性空间分布的关系.7个工况的研究结果表明:①在水力负荷0.01m3.m-2.d-1条件下,系统对COD,NH3-N,TN,TP的去除率达到了90%以上,具有良好的脱氮除磷效果;②系统内部中层和底层的脲酶活性均与系统的TN去除率显著正相关,底层的亚硝酸盐还原酶(NIR)活性与出水的NO3--N,TN浓度显著负相关,硝酸盐还原酶(NAR)活性与系统脱氮效果的关系不明显.现将前两种酶活性(脲酶,NIR)作为指示系统脱氮效果的重要指标.It is focused on nitrogen removal and spacial distribution of enzymes in soil matrix.The results showed that: ①under 0.01m3·m-2·d-1 of hydraulic loading rate,nitrogenous and phosphorus substances were removed effectively with COD,NH3-N,TN and TP removals being greater than 90%;②a significant positive relationship could be found between the urease activities at middle or bottom layer and TN removal rate.Besides,a significant negative relationship existed between the nitrite-reductase(NIR) activity at bottom ...

关 键 词：土壤渗滤 脱氮 脲酶 亚硝酸盐还原酶(NIR) 硝酸盐还原酶(NAR) 

分 类 号：X703.1[环境科学与工程—环境工程]