摘要
地下水中NO-3—N污染是普遍存在的环境问题,生物脱氮作用是去除该污染的主要机制,而生物脱氮菌群和营养碳源又是这种作用进行的主要限制性因子。该文应用这一理论将人工接种驯化并优势培养制备的生物脱氮菌剂,分别与不同种类不同配入量比的营养碳源物质一起施用,进行系列污染水体的生物脱氮模拟试验研究,以确定用于治理地下水中NO-3—N污染的微生物菌剂和促进生物脱氮作用的营养碳源种类及其最佳配入量比值,探索修复治理地下水中大面积NO-3—N污染的方法。
Nitrate pollution in groundwater is a universal environment problem. Denitrification is the main method of removal nitrate in groundwater. Main affecting factors of this method are the microbial population of denitrification and the nutritious carbon sources. Based on the principle of this method, the processes of denitrification are modeled in laboratory by adding the bacteria of artificial inoculation and the different types and proportions of nutritious carbon. The purpose of present work is to find out the bacteria that can remove NO-3 in groundwater, and to determine the types and optimal proportion of nutritional carbon sources that promote the denitrfication processes. The results of this study are helpful for removing NO-3 in groundwater at a large scale.
出处
《地理与地理信息科学》
CSSCI
CSCD
北大核心
2003年第1期66-69,共4页
Geography and Geo-Information Science
基金
国家高技术应用部门发展项目"污染土体和地下水的原位微生态修复技术研究
关键词
地下水
生物脱氮作用
生物脱氮菌剂
去除率
降解速率
氮污染
Denitrification
Effective bacteria of denitrification
nutritious carbon sources
removal rate
degradation rate
