污泥回流的控制及对TP去除的影响
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摘要
北京市顺义区污水处理厂回流污泥比例偏大导致厌氧池DO偏高,造成聚磷菌无法充分释放磷,增殖缓慢,进而造成生物除磷能力不高。通过减少回流污泥比、回流污泥质量浓度,有效降低了厌氧池和缺氧池的DO浓度,保证了厌氧环境。同时调整沉淀池内污泥层高度为0.5～0.7 m,确保了出水磷的达标排放,同时也节约了0.5%～1%的电量损耗。
引文
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[2]陈滢,彭永臻,杨向平,等.低溶解氧SBR除磷工艺研究[J].中国给水排水,2004,20(8):40-42.
[3]BARKER P S,DOLD P L.Denitrification behavior in biological excess phosphorus removal activated sludge system[J].Water research,1996,30(4):769-780.
[4]KUBA T,VAN LOOSDRECHT M C M,BRANDSE F A,et al.Occurrence of denitrifying phosphorus removing bacteria in modified UCT-type wastewater treatment plants[J].Water research,1997,31(4):777-786.
[5]CARUCCI A,KUHNI M,BRUN R,et al.Microbial competition for the organic substrates and its impact on Ebor system under conditions of changing carbon feed[J].Water science and technology,1999,39(1):75-85.
[6]马勇,彭永臻,王淑莹.应用二沉池污泥层高度控制A/O工艺污泥回流量[J].中国环境科学,2008,28(2):121-125.