| 引用本文: | 李冬,吴青,梁瑜海,苏庆岭,张金库,卫家驹,张杰.不同基质条件对亚硝化污泥胞外聚合物的影响[J].哈尔滨工业大学学报,2015,47(4):81.DOI:10.11918/j.issn.0367-6234.2015.04.014 |
| LI Dong,WU Qing,LIANG Yuhai,SU Qingling,ZHANG Jinku,WEI Jiaju,ZHANG Jie.Effect of substrate concentration and type on the content of extracellular polymeric substances in the nitrification sludge[J].Journal of Harbin Institute of Technology,2015,47(4):81.DOI:10.11918/j.issn.0367-6234.2015.04.014 |
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| 不同基质条件对亚硝化污泥胞外聚合物的影响 |
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李冬1, 吴青1, 梁瑜海1, 苏庆岭1, 张金库1, 卫家驹1, 张杰1,2
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(1.水质科学与水环境恢复工程北京市重点实验室(北京工业大学),100124北京; 2.城市水资源与水环境国家重点实验室(哈尔滨工业大学),150090哈尔滨)
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| 摘要: |
| 为研究基质质量浓度和类型对污泥中胞外聚合物(EPS)质量分数的影响,采用6个SBR反应器以不同氨氮质量浓度和不同基质为进水对比污泥中EPS质量分数．结果表明:氨氮质量浓度为60～200 mg／L时,EPS质量分数随氨氮质量浓度增大而增加,氨氮质量浓度超过200 mg／L时,EPS质量分数无明显增加;多糖与蛋白质的比与氨氮质量浓度线性相关,R2为0.972 3;污泥中EPS组分受基质类型的影响,以葡萄糖为基质的污泥EPS组分中多糖质量分数偏高,以生活污水为基质的污泥EPS组分中蛋白质质量分数偏高;EPS中的蛋白质和多糖具有可降解性,当基质缺乏时可作为碳源、能源被微生物消耗;EPS影响污泥沉降性,随EPS质量分数增加,SVI呈逐渐减小趋势． |
| 关键词: SBR反应器 氨氮质量浓度 基质类型 胞外聚合物 污泥沉降性 |
| DOI：10.11918/j.issn.0367-6234.2015.04.014 |
| 分类号:X703 |
| 基金项目:国家自然科学基金(51222807);国家重大科技专项水专项(2012ZX07202-005). |
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| Effect of substrate concentration and type on the content of extracellular polymeric substances in the nitrification sludge |
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LI Dong1,WU Qing1,LIANG Yuhai1,SU Qingling1,ZHANG Jinku1,WEI Jiaju1,ZHANG Jie1,2
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(1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering(Beijing University of Technology), 100124 Beijing, China; 2.State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology), 150090 Harbin, China)
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| Abstract: |
| The content of EPS affects the characteristics of sludge and formation of the granular sludge.To study the effect of substrate concentration and type on the EPS content and the sludge settling performance, six SBR reactors with different ammonia concentrations and different substrates were used. The results showed that the EPS content increased with the increase of ammonia concentration only when ammonia nitrogen concentration was 60-200 mg／L, but did not increase significantly when the ammonia nitrogen concentration exceeded 200 mg／L. The relationship between the ratio of polysaccharide to protein and ammonia concentration was a linear correlation, with R2 of 0.972 3. The EPS was influenced by the substrate type, higher content of polysaccharide with glucose as organic, and higher content of protein with domestic waste water as substrate. The protein and polysaccharide were biodegradable, which could be used by microorganisms as carbon source and energy when the substrate was deficient. The sludge sedimentation could be affected by the EPS content, and the SVI decreased with the increase of EPS content. |
| Key words: SBR the concentration of ammonia nitrogen the substrate type EPS the sludge sedimentation |
