复合混凝剂对MBR工艺中污泥性能的影响研究  

Effect of Composite Coagulant on Sludge Performance in MBR Process

作　　者：唐利[1] 邱江平[1] 李旭东[1] 纪婧[1] 

机构地区：[1]上海交通大学生态毒理和环境污染与防治实验室,上海200042

出　　处：《中国给水排水》2009年第23期121-122,125,共3页China Water & Wastewater

摘　　要：为了缓解MBR工艺的膜污染,向MBR工艺中投加复合混凝剂,考察了复合混凝剂对污泥性能的影响。结果表明,投加复合混凝剂可降低污泥比阻,明显增大污泥絮体的平均粒径、降低其分形维数,且污泥的可溶性微生物产物(SMP)含量也明显下降,这样有利于增强污泥的沉降性能、降低膜滤饼层的污染、增强膜表面的透水性。To alleviate the membrane fouling in MBR process,the composite coagulant was added into the reactor. The effect of combined coagulant on sludge performance was investigated. The results show that adding the composite coagulant can decrease specific resistance of sludge,increase the average particle size of sludge floc and decrease its fractal dimension. Also,the soluble microbial products (SMP) content is decreased significantly. In this way,the settleability of sludge is enhanced,the cake layer fouling is ...

关 键 词：复合混凝剂 污泥 膜污染 

分 类 号：X703[环境科学与工程—环境工程]