膜生物反应器处理一种食品防腐剂生产废水的污泥特性研究  

A Study on Sludge Characteristics in Submerged Membrane Bioreactor for Treating the Wastewater of Food Preservative Production

作　　者：孙毅[1] 刘康怀[2] 孙洪林[2] 陈瑜[2] 

机构地区：[1]湖北民族学院生物科学与技术学院,湖北恩施445000 [2]桂林工学院资源与环境工程系,广西桂林541004

出　　处：《湖北民族学院学报（自然科学版）》2009年第3期334-337,共4页Journal of Hubei Minzu University(Natural Science Edition)

基　　金："西部开发"重大项目(2003BA901A07)

摘　　要：研究了SMBR工艺处理某食品防腐剂生产废水的污泥特性,重点考察了污泥浓度与污泥的沉降性、污泥的粘度及EPS的关系.试验研究表明,在整个试验阶段内,污泥活性高,VSS/SS值在0.80~0.90之间;随着污泥浓度的增加,污泥粘度升高、沉降性降低;污泥中EPS的含量随着污泥浓度的增加而增加,EPS增长速度高于污泥增长速度.活性污泥的扫描电镜分析表明活性污泥中的微生物主要是尺寸为3.0~4.0μm的杆菌.Characteristics of sludge were studied in submerged membrane bioreactors for treating wastewater of the food preservative production.The interaction between the sludge concentration,the sludge settling ability,the sludge viscidity,and the content of the extracellular polymer substances（EPS） in sludge is analyzed.The experiment results indicate： the activity of the sludge is very high during the whole experiment,and the value of VSS/SS is between 0.80～0.90.With the sludge concentration increasing,sludge viscidity gets higher,sludge sedimentation performance becomes lower,and the content of EPS in sludge increases with a higher rate.The image of electronic scanning microscopy of activated sludge shows that the main microorganisms are the bacillus whose size is 3.0～4.0μm.

关 键 词：膜生物反应器 食品防腐剂生产废水 污泥活性 污泥粘度 

分 类 号：X703[环境科学与工程—环境工程]