两相厌氧生物技术处理环氧树脂生产废水

研究采用两相厌氧生物技术处理环氧树脂生产废水。试验结果表明:经过AMBR和EGSB反应器处理后,COD去除率达到91%,SS去除率达到67%;进水在产酸器AMBR反应后,pH值由6.8降至5.86,VFA由1265 mg/L升至3862 mg/L,酸化效果较好;经产甲烷器EGSB反应后,pH值和VFA分别为7.61和206 mg/L,产甲烷效果良好;经过后续工艺SBR处理后,出水符合国家污水综合排放标准。

Treatment of the wastewater from production of epoxy resin by the two-stage anaerobic biological technique

The two-stage anaerobic biological technique is introduced to treat wastewater from production of epoxy resin.The experimental results are as follows: the COD removal rate reached 91% and the suspended solids(SS) removal rate was 67% after treatment by the anaerobic migrating blanket reactor(AMBR) and the expanded granular sludge bed(EGSB) reactor;the pH value of the effluent water decreased from 6.80 to 5.86 and volatile fatty acids(VFA) varied from 1 265 mg/L to 3 862 mg/L when influent water was treated by the AMBR reactor,and the acidification effect was preferable;the effluent water from the AMBR was treated by the methanation reactor(EGSB reactor) and the efficiency of methanation was favourable,and the pH and VFA became 7.61 and 206 mg/L respectively.Then the water was further treated by the SBR in the continuing process and the effluent water met the demands of National Integrated Wastewater Discharge Standard.