多相催化氧化与周期循环活性污泥法(CASS)组合工艺处理茶多酚精制生产废水

摘要

A joint system consisting of heterogeneous catalytic oxidization technology and cyclic activated sludge system (CASS) to treat wastewater from tea polyphenol extraction was studied. Pilot scale test proves that the treatment process is efficient and it's feasible to apply for industry. The results show when CODCr of influent is 2 900～4 100 mg/L and color of influent is 400～500, CODCr of effluent is less than 100 mg/L, the average removal rate of which is 98.0 ％, color of effluent is less than 30, the average removal rate of which is 92.7 ％. The effluent quality meets the integrated wastewater discharge standard of shanghai (DB 31/199-2009).%通过中试研究,探讨了多相催化氧化一周期循环活性污泥法(CASS)组合工艺处理茶多酚精制生产废水的可行性.试验结果表明:当进水CODCr为2 900-4 100 mg/L、色度为400～550倍,经组合工艺处理后,出水CODCr小于100 mg/L,平均去除率达98.0%;出水色度小于30倍,平均处理效率为92.7%.出水水质达到上海市污水综合排放标准(DB 31/199-2009)二级标准.