固定化氨氧化细菌短程硝化特性研究  

Characterization of short-cut nitrification using immobilized ammonia-oxidizing bacteria

作　　者：赖鼎东[1] 李正魁[1,2] 张晓姣[1] 杨竹攸[1,2] 石鲁娜[1] 

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

出　　处：《环境污染与防治》2008年第11期13-16,共4页Environmental Pollution & Control

基　　金：国家"973计划"项目(No.2008CB418003);国家科技支撑计划项目(No.2006BAJ08B01-02);江苏省建设厅资助项目(No.JS2004ZB02);教育部水处理与水环境修复工程研究中心资助项目(No.WTWER0707)

摘　　要：以高分子聚合物为载体,采用固定化细胞增殖技术固定氨氧化细菌,研究温度、pH、碱度和溶解氧等因素对短程硝化过程的影响。实验结果表明,最适宜的温度、pH分别是30℃和8.5;当碱度/NH4+-N(质量比)=6.75时,亚硝化率为87.5%;溶解氧浓度影响氨氧化速率,但对亚硝化率影响不大,溶解氧的适宜质量浓度为4.03mg/L。Ammonia-oxidizing bacteria （Pseudomonas sp. ） were immobilized by adsorption on the porous copolymer carriers. The effects of temperature, pH, alkalinity and DO concentration on short-cut nitrification mediated by the attached bacteria were determined. When the treatment was performed at 30 ℃, pH of 8.5, and the alkalinity/ NH4^＋ -N of 6.75, 87.5% of ammonia was oxidized to NO2^- -N. The DO level affected the ammonia oxidation rate but had no effect on the short-cut nitrification efficiency; the best DO for the system was 4.03 mg/L.

关 键 词：固定化 氨氧化细菌 短程硝化 

分 类 号：X703[环境科学与工程—环境工程] X703.1