纯种氨氧化细菌Comamonas aquatic LNL_3的固定化及短程硝化性能研究  

Immobilized Ammonia-oxidizing Bacteria Comamonas aquatic LNL_3 and Its Partial Nitrification Characterization

作　　者：李正魁[1] 石鲁娜[1] 杨竹攸[1] 张晓姣[1] 王月明[1] 陈祈春[1] 吴凯[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

出　　处：《环境科学》2009年第10期2952-2957,共6页Environmental Science

基　　金：国家重点基础研究发展规划(973)项目(2008CB418003);国家高技术研究发展计划(863)项目(2008ZX07101-012-04-03,2008ZX07101-004);国家科技支撑计划项目(2006BAJ08B01-02)

摘　　要：采用辐射技术,以共聚物Poly(HEA)-Poly(HEMA)为载体将纯种AOB-Comamonas aquaticLNL3固定化,研究了固定化纯种AOB在不同温度、pH、DO、FA条件下的短程硝化性能.结果表明,纯种AOB-Comamonas aquaticLNL3具有短程硝化性能,固定化纯种AOB-Comamonas aquaticLNL3的短程硝化反应的最佳温度、pH、DO、FA分别为30℃、8.5、4.03 mg/L和9 mg/L,相应的氨氮去除率和亚硝化率分别为93.52%、94.73%;79.74%、94.67%;91.17%、94.66%和90%、94.4%,FA对短程硝化亚硝化率影响不大.A new kind of ammonia-oxidizing bacteria（AOB）-Comamonas aquatic LNL3was screened out and immobilized by Poly（HEA）-Poly（HEMA） copolymer carrier using irradiation techniques.Four kinds of impact factors on short-cut nitrification,including temperature,pH,DO and free ammonia（FA） concentration had been investigated.The result showed that AOBComamonas aquatic LNL3had short-cut nitrification capability and the optimal temperature,pH,DO and FA concentration were 30℃,8.5,4.03 mg/L and 9mg/L respectively.Corresponding to above results,ammonia nitrogen removal rate and short-cut nitrification efficiency were 93.52%,94.73%;79.74%,94.67%;91.17%,94.66% and 90%,94.4% respectively.

关 键 词：水生丛毛单胞菌LNL3 短程硝化 共聚物载体 氨氮去除率 亚硝化率 

分 类 号：X703.1[环境科学与工程—环境工程]