基因工程菌生物强化膜-生物反应器工艺启动期影响因素研究  

Influencing Factors on Start-up Period in a Bioaugmented Membrane Bioreactor Using Genetically Engineered Microorganism(GEM)

作　　者：刘春[1] 黄霞[1] 王慧[1] 

机构地区：[1]清华大学环境科学与工程系环境模拟与污染控制国家联合重点实验室,北京100084

出　　处：《环境科学》2007年第5期1102-1106,共5页Environmental Science

基　　金：国家重点基础研究发展规划(973)项目(2004CB418506)

摘　　要：基因工程菌生物强化膜-生物反应器工艺经过启动期之后,可以实现对阿特拉津的高效稳定去除,去除率在90%以上.不同条件下,启动期最短2 d,最长可达12 d.阿特拉津初始进水负荷、运行温度和工程菌接种密度,对启动期具有显著影响.增加阿特拉津初始进水负荷、提高运行温度和增加基因工程菌接种密度,可以实现快速启动.进水水质对启动期影响不大,在人工配水和实际污水2种进水条件下,启动期基本相同,而且稳定期2种进水的阿特拉津去除情况也没有差异,说明进水水质对启动期和稳定期阿特拉津的去除影响都不大.High and stable atrazine removal could be obtained after a start-up period in a membrane bioreactor （MBR） bioaugmented with genetically engineered microorganism （GEM） and the removal efficiency was above 90%. The shortest start-up period was 2 d and the longest one was 12 d under different conditions. Initial influent atrazine loading, operation temperature and initial population size of GEM affected the start-up period greatly. High initial influent atrazine loading, high operation temperature and large initial population size of GEM were favorable to shorten the start-up period. The characteristics of the influent had little effect on the start-up period. When other conditions were identical, two kinds of influents, synthetic wastewater and real domestic wastewater, had the same start-up periods. Moreover, after the start-up period, atrazine removal had also no difference with these two influents in the following stable period. Then it could be concluded that the characteristics of the influent influenced atrazine removal little not only in the start-up period but also in the stable period.

关 键 词：生物强化 基因工程菌 膜-生物反应器 阿特拉津 启动期 影响因素 

分 类 号：X172[环境科学与工程—环境科学]