垃圾压缩站污水的生物强化处理

Bioaugmentation enhanced treatment of wastewater from a municipal solid waste compaction station

垃圾压缩站污水是一种具有高COD、高NH3-N特点的有机污水。以厌氧/好氧组合工艺为基础,通过投加高效菌株对活性污泥系统进行生物强化。实验结果表明,与空白相比,厌氧出水COD去除率提高约30%,好氧出水NH3-N去除率提高约20%。最终出水COD<120mg/L,NH3-N<25mg/L,均达到《污水综合排放标准》(GB8978—1996)二级排放标准。

Augmentation of active anaerobic and aerobic bacteria present in the acclimated mixed liquors enhanced the effectiveness of sequential anaerobic hydrolysis-degradation and aerobic oxidation-nitrification treatment of a high COD/NH3-N wastewater generated in a municipal solid waste compaction facility. The COD removal rate of the anaerobic reactor went up by 30%, and the NH3-N removal rate of the aerobic reactor increased by 20%. Concen- trations of COD and NH3-N of the final effluent were consistently below the national discharge limits （COD= 120 mg/L and NH3-N=25 mg/L）.