生物净化槽中菌群结构在梭鱼草(Pontederia cordata L)不同生长期的动态变化  

Analysis of structure changes of microbial community in phytoremediation tank at different growth periods of Pontederia cordata L

作　　者：张勇[1] 黄民生[1] 阮宇鹰[1] 赵丰[1] 

机构地区：[1]华东师范大学环境科学系,上海200062

出　　处：《华东师范大学学报（自然科学版）》2009年第6期108-118,共11页Journal of East China Normal University(Natural Science)

基　　金：国家科技重大专项(2008ZX07317-006)

摘　　要：为探究引入植物对生物净化槽处理黑臭河水的影响及机理，结合水质理化指标的动态变化，采用了ERIC—PCR指纹图谱技术来分析生物净化槽内的微生物群落结构在植物不同生长阶段的变化特征，比较植物与填料不同工艺组合对微生物群落结构的影响．结果发现：引种梭鱼草（Pontederia cordataL）的生物净化槽对主要污染物CODcr，NH3-N和TP的去除率分别提高了19．8％～69．4％，18．2％～68％和23．9％～77．2％；微生物群落结构随植物不同生长发育阶段而变化，分蘖期优势菌群的种类和数量最多，同期净化效果也最好；从三种工艺的运行效果来看，植物＋组合填料搭配最合适．The effects and mechanisms of pioneer plant on the purification of malodorous river water in phytoremediation tank were evaluated. According to the relationship between the major pollutants removal effect and the microbial community structure, which was investigated by ERIC-PCR fingerprinting, it was found that Pontederia cordata L had obvious effect on the pollutant removal, the removal efficiencies of CODcr, NH3-N and TP being 19.8%- 69.4%, 18.2-68% and 23.9%-77.2% higher than those of control group. Meanwhile, the three tanks planted with Pontederia cordata L had more abundant microbial species than those without hydrophytes. It also remarkably indicated that the diversity of the predominant bacteria at tillering stage was much greater than that at other stages and the combination of plant and compoun ding medium was the best technologic model in three different types.

关 键 词：梭鱼草 生物净化槽 ERIC-PCR指纹图谱 黑臭河道 

分 类 号：X172[环境科学与工程—环境科学]