减少活性污泥法中剩余污泥产率的研究  

STUDY ON REDUCTION OF PRODUCTION OF EXCESS SLUDGE IN AN ACTIVATED SLUDGE PROCESS

作　　者：谢敏丽 孙彤[2] 刘雨[3] 杨学富[3] 

机构地区：[1]广东省中山市环境保护科学研究所,广东中山528400 [2]辽宁工学院,辽宁锦州121000 [3]北京工商大学化学与环境工程学院,北京100037

出　　处：《北京工商大学学报（自然科学版）》2004年第4期20-22,68,共4页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：北京市自然科学基金资助项目(8002007)

摘　　要：比较了4种解偶联剂(对氯酚、间氯酚、间硝基酚和邻硝基酚)在活性污泥法中减少污泥产率的效果.4种解偶联剂的研究表明,间氯酚在减少污泥产率的方面是最有效的,同时对污水处理的效果影响较小,当间氯酚的浓度为20mg/L时,与空白实验相比较,污泥产率下降了86.9%,COD的去除率下降了13.2%;解偶联剂的酸性常数pKa很大程度上影响了其在减少污泥产率方面的效果,即pKa值越低的解偶联剂对减少污泥产率的效果越好.选择解偶联剂和其最佳投药量取决于同时满足污泥减量与COD去除率要求的一个平衡点.This study compared the effectiveness of four metabolic uncouplers(p-chlorophenol,m-chlorophenol, m-nitrophenoland o-nitrophenol) in reducing sludge production from an actived sludge process. Among four metabolic uncouplers studed, m-chlorophenol was the most effective in reducing sludge production, and had less effect on the process performance, e.g.86.9% of sludge reduction was achieved at a m-chlorophenol concentration of 20 mg/L, while the COD removal efficiency was lowered only by 13.2% as compared to the control test. The acidity constant(pK_a) of a metabolic uncoupler highly influenced its effectiveness in sludge production, i.e. metabolic uncoupler with a lower pK_a value has a higher potential to reduce sludge production. It appears that selection of metabolic uncoupler and optimization of its dosage should be based on a compromise of the desired sludge production and system performance.

关 键 词：活性污泥法 剩余污泥产率 COD去除率 增长率 解偶联剂 废水处理 生化处理 

分 类 号：X703[环境科学与工程—环境工程] X172