纳米Fe_3O_4负载好氧反硝化菌脱氮除磷性能  

Nitrogen,phosphorus and COD removal characteristics of an aerobic denitrifying bacterial strain loaded on nano Fe_3O_4

作　　者：乔楠[1] 张静[2] 张金榜[2] 孙伟[2] 于大禹[2] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012 [2]东北电力大学化学工程学院,吉林吉林132012

出　　处：《化工进展》2009年第11期2058-2062,共5页Chemical Industry and Engineering Progress

基　　金：国家重点基础研究发展计划(2007CB206904);中国电机工程学会电力青年科技创新项目(2008-5);吉林省科技发展计划(20090145);吉林市杰出青年培养计划(200805)资助项目

摘　　要：以纳米Fe3O4负载好氧反硝化菌处理生活废水,确定了游离菌及固定化菌处理废水的最佳条件及处理效果。游离菌在pH=6.8、30℃条件下作用2天,对废水的处理效果最佳,而固定化菌在pH=7.8、30℃及Fe3O4/菌=3:1时,对废水的处理效果最佳,菌株经纳米Fe3O4负载后,对废水的脱氮、除磷及去除COD效果得到明显提升,去除率分别达到75.56%、38.83%及87.5%。纳米Fe3O4负载的菌株经反复再生,并连续处理4批废水,总氮、无机磷及COD的去除效果仍然维持在高水平,在治理水体富营养化领域具有广阔的应用前景。An aerobic denitrifying bacterial strain was loaded on nano Fe304 and applied to deal with actual living wastewater. The effects of free bacterial strains and immobilized bacterial strains for living wastewater treatment were compared. The optimum treatment conditions of free bacterial strains for wastewater are pH=6.8, 30~℃ and 2 days of incubation time., while those of immobilized bacterial strains are pH=7.8, 30℃ and 3 ： 1 of Fe3O4/ dry weight of bacteria. The treatment effects of the bacterial strains are evidently improved by the immobilization on nano Fe3O4. The removal rates of total nitrogen, inorganic phosphorus and COD attained to 75.56%, 38.83% and 87.5%, respectively. The bacterial strains loaded on nano Fe3O4 maintained high activities to remove total nitrogen, inorganic phosphorus and COD even repeatedly regenerated, which have broad application prospects in the area of nutrition -rich wastewater treatment.

关 键 词：好氧反硝化菌 纳米FE3O4 总氮 无机磷 富营养化 

分 类 号：X703.1[环境科学与工程—环境工程] X172