含苯酚废水生物处理的细菌群落结构初探

Study on Community Structure During Industrial Phenol Wastewater Treatment Process

本文利用PCR-DGGE技术对苯酚生产污水处理中常用的连续缺氧-好氧工艺、连续好氧工艺和缺氧SBR工艺的微生物的群落变化进行了对比研究。研究结果表明,针对苯酚生产废水的生物处理,与A/O工艺和缺氧SBR相比较,连续好氧工艺处理效果最佳,同时还具有较好的耐冲击力;生物的种群特性与所选择的工艺有密切关系,连续好氧体系中微生物的多样性最高,缺氧SBR的微生物多样性最低;在同一种运行工艺中,随水质或负荷的改变,微生物的种群多样性发生变化,而体系中的优势种群并没发生明显改变。

In this study,PCR-DGGE technology was employed to study the changes of microbial community in three different bio-processes（continuous anoxic-aeration,continuous aeration and anoxic SBR） during industrial phenol wastewater treatment.The results indicated that the community structure have a close relation with the selected bio-processes.In the three different bio-processes,the richness of community was highest in continuous aeration,then anoxic-aeration and lower in the anoxic SBR process.The removal efficiency on COD had interaction with the biodiversity.In the process of continuous aeration,the community composition was changed with the water quality and organic loading.However,the dominant species kept no evident change.