A/O-MBR系统的短程生物脱氮污水处理工艺研究

利用生物强化技术,通过接种短程硝化菌和亚硝酸反硝化菌于反应器中,构建了A/O-MBR短程生物脱氮污水处理工艺系统,并考察启动期和不同HRT下的运行效果。结果表明:A/O-MBR短程生物脱氮污水处理工艺启动时间短;在不同水力停留时间(HRT)时,MBR中的亚硝氮积累比率均能维持在0.95以上;AN具有很好的反硝化性能,出水NO2-和NO3-浓度均低于3mg/L。分析认为MBR中氨氧化菌维持优势地位是该工艺可实现良好的短程生物脱氮的原因。

Study of shortcut biological nitrogen removal wastewater treatment technology of A/O--MBR system

The use of biological enhancement technology, through inoculation of shortcut nitrification bacteria and nitrite denitrifying bacteria in the reactor, the construction of A/O MBR shortcut biological nitrogen removal process of sewage treatment system, and study the initiation period and the operating effect under different HRTo The results show that：The A/O--MBR shortcut biological nitrogen removal wastewater treatment process of short starting time; In different hYdraulic retention time （HRT）, MBR in nitrite accumulation ratio can he maintained at more than 0. 95 AN has a very good denitrification performance, effluent NO2 and NO3-- concentrations were lower than in 3mg/L. The analysis thinks MBR am- monia oxidizing bacteria in the maintenance of dominant position is the process can achieve good short--cut biological nitrogen removal cause.