纤维素乙醇废水处理研究与工程应用

摘要

采用铁炭微电解-Fenton+UASB+MBR组合工艺处理纤维素乙醇废水,并对工程设计运行参数和污染物去除机理进行了探索.结果表明:在微电解反应5h,UASB停留时间36 h,MBR停留时间25h条件下处理纤维素乙醇废水,经絮凝脱色后出水COD、氨氮等指标均达到《发酵酒精和白酒工业水污染物排放标准》(GB 27631—2011)中的规定,且运行效果稳定,费用较低.%A combined process of iron-carbon micro-electrolysis-Fenton+UASB+membrane bioreactor(MBR) has been used for treating cellulose ethanol wastewater. Its engineering design operation parameters and pollutant re-moving mechanisms have been explored. The results show that after the flocculation decolonization process, all of th< indexes,such as effluent COD,ammonia-nitrogen,etc. can reach the requirements of the Discharge Standard of Water Pollutants from Fermentation Alcohol and Distilled Spirits Industry (GB 27631—2011) ,the effect of the operation is stable,and cost is low,under the following conditions: reaction time of micro-electrolysis is 5 h,UASB retention time 36 h, and MBR retention time 25 h.