固定化土著氮循环细菌在城市湖泊水体净化中的应用  

Application of immobilized nitrogen cycling bacteria in water purification of urban lakes

作　　者：张晓姣[1] 李正魁[1,2] 杨竹攸[1,2] 石鲁娜[1] 王月明[1] 吕溢修[1] 冯露露[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210093 [2]水处理与水环境修复教育部工程研究中心,南京210093

出　　处：《湖泊科学》2009年第3期351-356,共6页Journal of Lake Sciences

基　　金：国家科技支撑计划项目(2006BAJ08B01-02);国家高新技术研究发展计划(863)项目(2003AA601100-4);教育部水处理与水环境修复工程研究中心项目(WTWER0707)

摘　　要：从镇江金山湖天然水体中筛选分离出土著氨化、亚硝化、硝化和反硝化细菌,对氮循环细菌固定化后在镇江金山湖示范工程区进行水体净化应用.结果表明,运行一段时间后水质得到明显改善,氨氮、亚硝酸盐氮和硝酸盐氮以及总氮浓度处于动态变化中,有降低的趋势;氨氮含量已经达到Ⅱ类指标,总氮和COD分别达到Ⅴ类、Ⅲ类指标;分析结果还显示硝酸盐氮是金山湖水体中总氮的主要存在形式,与水体荒漠化状态有关;固定化氮循环细菌通过扩散,可以增加水体及植物根区的微生物数量,高出对比组1-3个数量级;固定化氮循环细菌技术对荒漠化水体氨氮、总氮和COD去除具有重要意义.Indigenous ammonibacteria, nitrosobacteria, nitrifying bacteria and denitrifying bacteria were screened from natural water of Lake Jinshan. The effect of water purification was studied in the demonstration project of Lake Jinshan after immobilization of nitrogen cycling bacteria. The result showed that water quality was improved obviously after running a period of time. NH4^＋ -N, NO2^- -N, NO3^- -N or TN concentration was in dynamic state respectively, and the trend of them was negative. NH4^＋ -N concentration had reached national II class of water quality index, TN and COD had reached Ⅳand Ⅲ respectively. NO3^- -N was the main form of TN in the water of Lake Jinshan, which might be in relation to the water environment without aquatic plants. The microorganisms in immobilized nitrogen cycling bacteria area could diffuse in the water and root area of aquatic plants, the number of them was higher 1-3 degrees than that of the comparison group. It was significant that techniques of immobilized nitrogen cycling bacteria can remove NH4^＋ -N, TN and COD in desertifieation water.

关 键 词：固定化细菌 氮循环细菌 城市湖泊 金山湖 

分 类 号：X524[环境科学与工程—环境工程] X172