摘要
采用A/O-MBR工艺对经过混凝沉淀+UASB处理后的垃圾渗滤液进行后续除碳脱氮处理,并通过改变好氧段曝气量,研究了不同浓度DO条件下工艺的出水水质。结果表明:当DO维持在3.5~4.2mg/L条件下,对CODcr和NH3-N有较好的去除效果,分别达到82.3%、91.5%。另外,此条件下硝化反应进行完全,好氧池中NO3-N积累,TN的去除率也达到最好值58.3%;DO浓度提高至5.2mg/L,处理效率提高不明显,继续提高DO除碳脱氮效果降低。
Integrated A/O-MBR was used to treat the landfill leachate which had treated by coagulation sedimentation and UASB.Record water quality when the dissolved oxygen(DO) was controlled at different concentrations.The results showed that: when the DO maintained at 3.5~4.2mg/L conditions,the CODcr and NH3-N removal with good results,82.3% and 91.5% respectively.Besides,under these conditions nitration reaction proceed completely,the NO3-N start to accumulate,TN removal rate also reached the best 53.6%.When DO concentration increased to 5.2mg/L,treatment efficiency increase unobvious,and become descend if keep improve DO.
出处
《安徽化工》
CAS
2012年第1期68-70,76,共4页
Anhui Chemical Industry