苯胺废水SBR工艺生物强化处理效能  

Treatment effectiveness of bioaugmentation on aniline wastewater with SBR

作　　者：王哲[1] 魏利[1] 马放[1] 赵光[1] 张斯[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2010年第6期949-953,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50908063);哈工大优秀青年教师基金资助项目(NQQQ92324547)

摘　　要：应用生物强化技术,将实验室筛选出的高效苯胺降解菌投加到SBR反应器中,考察其经生物强化后对苯胺的去除效果,COD、氨氮、亚硝氮、硝氮的变化及微生物群落的演替规律.结果表明,生物强化系统可有效实现对苯胺的降解,系统达到稳定运行后,苯胺降解率为100%,COD的去除率为93%左右,氨氮的浓度随苯胺降解而升高.因水力滞留时间较短,并未驯化出亚硝化、硝化细菌.扫描电镜照片可以看出,系统稳定运行后,苯胺降解菌遍布于活性污泥上.此外,由PCR-DGGE图谱及相似性矩阵图可见,经16周期的运行,微生物群落种类、数量产生了明显的差异性,系统内微生物优势种群得到强化.Aniline-degrading bacteria conserved by laboratory were tested in Sequencing Batch Reactor（SBR） to investigate the capability of aniline removal, the variation of interrelated index such as COD, NH4^＋ , NO2^- and NO3^- ,and the community succession of microorganism. The results showed that SBR started up quickly and degraded aniline effectively. The removal efficiency of aniline reached 100% and the removal efficiency of COD was about 93% when the system reached steady running. The photographs screened by scanning electron microscope （SEM） indicated that the aniline-degrading bacteria spread over the activated sludge. It was found from the PCR-DGGE map and the similarity matrix that the species and the amounts of microorganism changed greatly, and dominant species in the system were strengthened.

关 键 词：生物强化 苯胺降解 群落演替 PCR—DGGE 

分 类 号：X703.1[环境科学与工程—环境工程]