Facing an energy crisis and shortage of water resources, domestic wastewater showed an enormous potential for reclaiming energy and reusing wastewater. In this study, the combined treatment process made up of up-flow anaerobic sludge fixed bed (UAFB), anoxic tank and aerobic membrane bioreactor (MBR) was used to treat domestic wastewater, and the ability of reclaiming methane and reusing wastewater was investigated. The efficiency of the combined treatment process treating wastewater at optimized parameter was studied in this paper. The combined treatment process treating domestic wastewater run at optimized parameter (20� C, HRT were 3h, 3h, 3.5h) indicated that the anaerobic gas production was 1.55 L/d, the COD and NH+4-N removal efficiency were 93.28% and 90.60% respectively, UAFB effluent including 54.74 mg/L of total VFAs, corresponding NO-3-N accumulating rate was 45.19% and TN removal efficiency was 45.51%. At the same time, it was found that sludge concentration of anoxic tank and aerobic MBR could be maintained at a low level, which is so rich in significance for sludge reduction and delaying membrane fouling.

Development of a novel hybrid UAFB-anoxic-aerobic MBR for energy production and nutrients removal from domestic wastewater

239th National Meeting (2010)

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