| 传统活性污泥法与膜生物反应器污泥沉降性能的比较 |
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| 引用本文： | 张海丰,孙宝盛,齐庚申. 传统活性污泥法与膜生物反应器污泥沉降性能的比较[J]. 四川环境, 2005, 24(3): 1-3 |
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| 作者姓名： | 张海丰 孙宝盛 齐庚申 |
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| 作者单位： | 天津大学环境科学与工程学院,天津,300072;天津大学环境科学与工程学院,天津,300072;天津大学环境科学与工程学院,天津,300072 |
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| 基金项目： | 国家高技术研究发展计划(863计划)课题(2002AA601240) |
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| 摘 要： | ![]()
针对污泥沉降性能，在运行条件相同的情况下对膜生物反应器(MBR)与传统活性污泥法(CAS)进行比较。结果表明：CAS工艺污泥沉降性能优于MBR工艺；CAS工艺出水水质受污泥沉降性能影响大；MBR工艺污泥沉降性能主要由反应器中累积的高浓度胞外聚合物(EPS)含量所影响，当EPS浓度大于100mg／g时，污泥沉降性能开始恶化；CAS工艺曝气池中EPS浓度没有累积；MBR工艺污泥颗粒平均粒径小于CAS工艺中污泥颗粒。
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| 关 键 词： | 传统活性污泥法 膜生物反应器 胞外聚合物 平均粒径 |
| 文章编号： | 1001-3644(2005)03-0001-03 |
| 修稿时间： | 2004-11-25 |
A Comparison of Sludge Settleability between a Conventional Activated Sludge Process and a Membrane Bioreactor |
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| ZHANG Hai-feng,SUN Bao-sheng,QI Geng-shen. A Comparison of Sludge Settleability between a Conventional Activated Sludge Process and a Membrane Bioreactor[J]. Sichuan Environment, 2005, 24(3): 1-3 |
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| Authors: | ZHANG Hai-feng SUN Bao-sheng QI Geng-shen |
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| Abstract: | ![]()
According to the sludge settleability,a comparison between a conventional activated sludge process(CAS) and a membrane bioreactor(MBR) was carried out under similar operational conditions. Experiment results showed that CAS had a more excellent sludge (settleability) than MBR. The sludge settleability would affect quality of effluent from the CAS system. The amount of extracellular (polymeric) substances (EPS) accumulated in MBR had a significant influence on sludge settleability. When the concentration of EPS was more than 100mg/g,its settleability became worse. No similar phenomenon was observed in the CAS system. The average particle size of sludge was smaller in MBR than CAS. |
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| Keywords: | Conventional activated sludge process membrane bioreactor extracellular polymeric substances average particle size |
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