| Mn2+、Mo6+和Zn2+对活性污泥内胞外聚合物组分的影响 |
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| 引用本文： | 曹相生,龙腾锐,孟雪征,赖震宏.Mn2+、Mo6+和Zn2+对活性污泥内胞外聚合物组分的影响[J].环境科学,2004,25(4):70-73. |
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| 作者姓名： | 曹相生 龙腾锐 孟雪征 赖震宏 |
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| 作者单位： | 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 |
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| 基金项目： | 国家"十五"科技攻关课题(2001BA604A0103) |
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| 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, 其中多糖含量下降最为明显.
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| 关 键 词： | 金属离子 胞外聚合物 比耗氧率 活性污泥 |
| 文章编号： | 0250-3301(2004)04-0070-04 |
| 收稿时间： | 2003/10/16 0:00:00 |
| 修稿时间： | 2004/2/17 0:00:00 |
Effects of Mn2+, Mo6+ and Zn2+ on the Components Change of Extracellular Polymeric Substances in Activated Sludge |
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| CAO Xiang-sheng,LONG Teng-rui,MENG Xue-zheng and LAI Zhen-hong.Effects of Mn2+, Mo6+ and Zn2+ on the Components Change of Extracellular Polymeric Substances in Activated Sludge[J].Chinese Journal of Environmental Science,2004,25(4):70-73. |
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| Authors: | CAO Xiang-sheng LONG Teng-rui MENG Xue-zheng and LAI Zhen-hong |
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| Institution: | Key Lab of Beijing for Water Quality Science and Water Environment Recovery Engineering, School of Civil Engineering, Beijing University of Technology, Beijing 100022, China. xshxzh@263.net |
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| Abstract: | By specific oxygen uptake rate,(SOUR) measurements of activated sludge with different metal ion concentration, the optimal stimulation concentrations of Mn2+ ,Mo6+ and Zn2+ 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 Mn2+ and Zn2+ concentration change but not with Mo6+. After storage at low temperature, EPS quantities in activated sludge are reduced with polysaccharide reduction is the most. |
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| Keywords: | metal ions EPS SOUR activated sludge |
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