UASB和ABR在常温下处理生活污水的性能比较研究

A Comparative Study of UASB and ABR in Treating Domestic Sewage at Normal Temperature

沿海城市生活污水的排放,对海洋环境有着重要影响。通过试验,在常温条件下研究了升流式厌氧污泥床反应器(Upflow Anaerobic Sludge Blanket Reactor,简称UASB)与厌氧折流板反应器(Anaerobic Baffled Reactor,简称ABR)处理生活废水的性能。试验结果表明:UASB与ABR对生活污水都有良好的处理效果,在HRT较长时,ABR反应器对COD和SS的去除效果优于UASB反应器;而当HRT缩短,小于12 h,UASB反应器内上升流速增加,改善了对COD的去除效果。ABR和UASB反应器对COD的去除效果都随温度的降低而降低。

Sewage discharge has a significant impact on marine environment in coastal cities. The performances of treating domestic sewage at normal temperature were investigated in an upflow anaerobic sludge blanket （UASB） reactor and an anaerobic baffled reactor （ABR）. The result showed that both the UASB and the ABR achieved better removal efficiencies of total COD and SS in treating domestic sewage. The Performance of the ABR in term of COD removal and SS removal was superior to the UASB reactor at longer HRT. When HRT was decreased and HRT〈12h, increasing upflow velocities in the UASB resulted in improving of COD removal efficiencies of the UASB reactor. For both reactor, decreasing the temperature brought about an decrease in COD removal efficiencies.