| AB法A段活性污泥沉降性能探讨 |
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| 引用本文： | 周健,魏小松,等.AB法A段活性污泥沉降性能探讨[J].重庆环境科学,2002,24(5):61-63. |
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| 作者姓名： | 周健 魏小松 |
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| 作者单位： | 重庆大学城市建设与环境工程学院 重庆400045
(周健，魏小松)，重庆大学城市建设与环境工程学院 重庆400045(龙腾锐) |
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| 基金项目： | 国家自然科学基金重点项目 (5983830 0 ) |
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| 摘 要： | 采用传统理论对A段活性污泥沉降性能分析得出：由于A段BOD5负荷高，微生物能量水平高，则易出现污泥分散生长，凝聚性能较差的情况，而且A段一般在微氧条件下运行，易于现溶解氧浓度受限制而发生低DO型膨胀。然而，事实上，A段具有良好的沉降性能，这是传统理论所不能解释的。本文分析了AB法A段活性污泥具有良好沉降性能的原因，着重探讨了不设初沉地，水力停留时间，污泥龄及有机物负荷对A段污泥沉降性能的影响。
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| 关 键 词： | AB法 活性污泥 沉降性能 污水处理 |
| 文章编号： | 1001-2141(2002)05-0061-03 |
| 修稿时间： | 2002年6月7日 |
Research on the Activated Sludge Settling Characters in A-Step of AB Process |
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| Zhou Jian,Wei Xiaosong,Long Tengrui.Research on the Activated Sludge Settling Characters in A-Step of AB Process[J].Chongqing Environmental Science,2002,24(5):61-63. |
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| Authors: | Zhou Jian Wei Xiaosong Long Tengrui |
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| Abstract: | Using traditional theory to analyze the settling property of the activated sludge in A-step of AB process,it can be concluded that the activated sludge trends to grow separately and agglomerate badly because of the high BOD 5 loading which results in the high energy level of the microorganism in A-step,and trends to take place sludge bulking for the limit of DO concentration,because A-step usually runs in anoxic condition.In fact,the activated sludge in A-step has good settling property and this can not be explained by traditional theory.This paper analyzed why it has good settling property by discussing the influence of the preliminary sedimentation tank,HRT,SRT and organic loading on the settling property of the activated sludge in A-step. |
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| Keywords: | AB process A-step Activated sludge settling property |
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