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污泥停留时间对单级好氧生物除磷的影响

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彭波, 汪志龙, 李小明, 杨麒, 陈洪波, 谢继慈, 许德超, 罗冠. 污泥停留时间对单级好氧生物除磷的影响[J]. 环境工程学报, 2014, 8(8): 3174-3180.
引用本文: 彭波, 汪志龙, 李小明, 杨麒, 陈洪波, 谢继慈, 许德超, 罗冠. 污泥停留时间对单级好氧生物除磷的影响[J]. 环境工程学报, 2014, 8(8): 3174-3180.
shu
Peng Bo, Wang Zhilong, Li Xiaoming, Yang Qi, Chen Hongbo, Xie Jici, Xu Dechao, Luo Guan. Effect of sludge retention time on phosphorus removal in aerobic/extended-idle regime[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3174-3180.
Citation: Peng Bo, Wang Zhilong, Li Xiaoming, Yang Qi, Chen Hongbo, Xie Jici, Xu Dechao, Luo Guan. Effect of sludge retention time on phosphorus removal in aerobic/extended-idle regime[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3174-3180.
shu

污泥停留时间对单级好氧生物除磷的影响

  • 1.

    湖南大学环境科学与工程学院, 环境生物与控制教育部重点实验室, 长沙 410082

  • 基金项目:

    国家自然科学基金资助项目（51078128）

  • 中图分类号: X703

Effect of sludge retention time on phosphorus removal in aerobic/extended-idle regime

  • 1.

    Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • Fund Project:

  • 摘要: 以丙酸钠为单一碳源，设置4组不同污泥停留时间（SRT）的SBR（R1： SRT=9 d； R2： SRT=12 d； R3： SRT=18 d； R4： SRT=24 d），考察SRT对单级好氧生物除磷的影响。 实验结果表明，当SRT分别为9、12、18和24 d时除磷效率分别为34.2%、85.0%、93.3%和76.7%，单位VSS除磷量分别为1.97、4.62、4.70和3.59 mg-P/g-VSS，SVI分别稳定在89、93、98和123 mL/g左右。 随着SRT增大，系统除磷效率及单位VSS除磷量先升高后下降，并在SRT=18 d时达到最大值，而污泥沉降性能逐渐变差。 分析各组反应器中内聚物的变化表明，R1中的微生物在外源基质消耗阶段利用糖原质的分解合成多β羟基烷酸盐（PHA），但PHA消耗阶段没有磷酸盐的大量吸收，表现出聚糖菌的代谢方式； R2、R3和R4中的微生物在外源基质消耗阶段通过TCA循环合成PHA，在PHA消耗阶段大量合成聚磷，表现出聚磷菌的代谢方式。
    Abstract: Sodium propionate was adopted as the sole carbon source, and four sequencing batch reactors (SBR) with four sludge retention times (SRT. R1: 9 d; R2: 12 d; R3: 18 d; R4: 24 d) were introduced to study the effect of SRT on biological phosphorus removal in aerobic/extended-idle regime. In the process of operation in four SBRs, the phosphorus removal efficiencies were 34.2%, 85.0%, 93.3% and 76.7%, the phosphorus removal rate per uint VSS were 1.97, 4.62, 4.70, 3.59 mg-P/g-VSS, and the SVI were averagely 89, 93, 98, 123 mL/g, respectively. Experimental results showed that with increasing SRT, the phosphorus removal efficiency and removal rate per uint VSS first rose and then descended, and reached a maximum at a critical SRT of 18 d, while the settling performance of sludge stepped down. According to the changes of intracellular polymers in SBRs, microorganism synthesised poly-β-hydroxyalkanoates (PHA) using glycogen at the stage of exogenous substrates consumption in R1, while there didn't exist substantial absorption of phosphate at the stage of PHA consumption, which indicated a metabolic way of GAOs; in R2, R3 and R4, microorganism synthesised PHA using TCA at the stage of exogenous substrates consumption, and synthesised large amount of Poly-P at the stage of PHA consumption, which implied a metabolic way of PAOs.
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  • 收稿日期:  2013-09-03
  • 刊出日期:  2014-07-31
彭波, 汪志龙, 李小明, 杨麒, 陈洪波, 谢继慈, 许德超, 罗冠. 污泥停留时间对单级好氧生物除磷的影响[J]. 环境工程学报, 2014, 8(8): 3174-3180.
引用本文: 彭波, 汪志龙, 李小明, 杨麒, 陈洪波, 谢继慈, 许德超, 罗冠. 污泥停留时间对单级好氧生物除磷的影响[J]. 环境工程学报, 2014, 8(8): 3174-3180.
shu
Peng Bo, Wang Zhilong, Li Xiaoming, Yang Qi, Chen Hongbo, Xie Jici, Xu Dechao, Luo Guan. Effect of sludge retention time on phosphorus removal in aerobic/extended-idle regime[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3174-3180.
Citation: Peng Bo, Wang Zhilong, Li Xiaoming, Yang Qi, Chen Hongbo, Xie Jici, Xu Dechao, Luo Guan. Effect of sludge retention time on phosphorus removal in aerobic/extended-idle regime[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3174-3180.
shu

污泥停留时间对单级好氧生物除磷的影响

  • 1. 湖南大学环境科学与工程学院, 环境生物与控制教育部重点实验室, 长沙 410082
  • 收稿日期:  2013-09-03
基金项目:

国家自然科学基金资助项目（51078128）

摘要: 以丙酸钠为单一碳源，设置4组不同污泥停留时间（SRT）的SBR（R1： SRT=9 d； R2： SRT=12 d； R3： SRT=18 d； R4： SRT=24 d），考察SRT对单级好氧生物除磷的影响。 实验结果表明，当SRT分别为9、12、18和24 d时除磷效率分别为34.2%、85.0%、93.3%和76.7%，单位VSS除磷量分别为1.97、4.62、4.70和3.59 mg-P/g-VSS，SVI分别稳定在89、93、98和123 mL/g左右。 随着SRT增大，系统除磷效率及单位VSS除磷量先升高后下降，并在SRT=18 d时达到最大值，而污泥沉降性能逐渐变差。 分析各组反应器中内聚物的变化表明，R1中的微生物在外源基质消耗阶段利用糖原质的分解合成多β羟基烷酸盐（PHA），但PHA消耗阶段没有磷酸盐的大量吸收，表现出聚糖菌的代谢方式； R2、R3和R4中的微生物在外源基质消耗阶段通过TCA循环合成PHA，在PHA消耗阶段大量合成聚磷，表现出聚磷菌的代谢方式。

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