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.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
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)
