【摘要】 采用由完全混合的厌氧生物反应器和板框式超滤膜组件构成的厌氧膜生物反应器对高浓度食品废水进行处理，考察了厌氧膜生物反应器的处理效果及其对负荷、水力停留时间等的稳定性．膜组件装填面积为０６４ｍ ２，膜材质为聚醚砜（ＰＥＳ），膜截留分子量为２００００．结果表明，ＣＯＤ负荷在２～３ｋｇ／（ｍ ３·ｄ）时，膜出水ＣＯＤ去除率可达８０％ ～９０％ ；当ＣＯＤ负荷超过４５ｋｇ／（ｍ ３·ｄ）时，混合液ＶＦＡ 出现积累，ＣＯＤ去除率下降至７０％ ．对ＳＳ、色度及细菌的去除率分别可达１００％ 、９８％ 和９９９％ ．水力停留时间对厌氧膜生物反应器的处理效果有重要影响，水力停留时间应大于５０ｈ更多还原

【Abstract】 A cross flow ultrafiltration membrane separation was applied to anaerobic process for treatment of a high concentration food wastewater. The UF unit used was a flat plate type of module in which eight sheets of PES membrane with total surface area of 0 64m 2 was installed. The nominal molecular cut off size of the membrane was 20000 dalton. It was proved that the COD removal rate was 80%～90% at COD loading rate of 2～3kg/(m 3·d) and 70%～80% at 4～5kg/(m 3·d). This system had a high performance in removing SS, color and bacteria due to the membrane separation and the removal rate of 100%,98% and 99 9% was achieved respectively. The HRT of anaerobic reactor was found to have a important influence on the treatment effect and needed to be more than 50h.更多还原