| Mn2+、Mo6+和Zn2+对活性污泥内胞外聚合物组分的影响 |
| 摘要点击 1455 全文点击 1286 投稿时间：2003-10-16 修订日期：2004-02-17 |
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| 中文关键词 金属离子 胞外聚合物 比耗氧率 活性污泥 |
| 英文关键词 metal ions EPS SOUR activated sludge |
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| 中文摘要 |
| 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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| 英文摘要 |
| 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. |
