Mn^(2+)、Mo^(6+)和Zn^(2+)对活性污泥内胞外聚合物组分的影响  

Effects of Mn^(2+), Mo^(6+) and Zn^(2+) on the Components Change of Extracellular Polymeric Substances in Activated Sludge

作　　者：曹相生[1] 龙腾锐[2] 孟雪征[2] 赖震宏[2] 

机构地区：[1]北京工业大学建工学院水质科学与水环境恢复工程北京市重点实验室,北京100022 [2]重庆大学城市建设与环境工程学院,重庆450045

出　　处：《环境科学》2004年第4期70-73,共4页Environmental Science

基　　金：国家"十五"科技攻关课题 ( 2 0 0 1BA60 4A0 10 3 )

摘　　要：通过测定不同浓度的金属离子对活性污泥比耗氧率的影响 ,确定了Mn2 + 、Mo6+ 和Zn2 + 的最佳促进浓度 ,并研究了在各自促进浓度范围内 3种金属离子对活性污泥内胞外聚合物 (EPS)组分 (蛋白质、糖类和核酸 )含量变化的影响 .结果发现 ,Mn2 + 、Mo6+ 和Zn2 + 的最佳促进浓度均为 1mg·L-1 .Mn2 + 和Zn2 + 对EPS各组分的影响较大 ,而Mo6+ 基本没有产生影响 .试验同时发现 ,经低温贮存的污泥 ,其EPS含量下降 。By specific oxygen uptake rate,(SOUR) measurements of activated sludge with different metal ion concentration, the optimal stimulation concentrations of Mn 2+ ,Mo 6+ and Zn 2+ were determined. Then within each metal ion stimulation concentration range, extracellular polymeric substances (EPS) were extracted from activated sludge and its components (protein, polysaccharide and nucleic acid) contents changes were investigated. The results showed that the optimal stimulation concentration of each metal ion is 1mg·L -1 . EPS components of activated sludge vary obviously with Mn 2+ and Zn 2+ concentration change but not with Mo 6+ . After storage at low temperature, EPS quantities in activated sludge are reduced with polysaccharide reduction is the most.

关 键 词：金属离子 胞外聚合物 比耗氧率 活性污泥 

分 类 号：X703.1[环境科学与工程—环境工程]