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低浓度LAS对活性污泥性质和去除污染物行为的影响

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黄文, 刘志敏, 成应向. 低浓度LAS对活性污泥性质和去除污染物行为的影响[J]. 环境工程学报, 2013, 7(9): 3390-3396.
引用本文: 黄文, 刘志敏, 成应向. 低浓度LAS对活性污泥性质和去除污染物行为的影响[J]. 环境工程学报, 2013, 7(9): 3390-3396.
shu
Huang Wen, Liu Zhimin, Cheng Yingxiang. Effect of low concentration of anionic surfactant LAS on activated sludge performance and pollutants removal behavior[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3390-3396.
Citation: Huang Wen, Liu Zhimin, Cheng Yingxiang. Effect of low concentration of anionic surfactant LAS on activated sludge performance and pollutants removal behavior[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3390-3396.
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低浓度LAS对活性污泥性质和去除污染物行为的影响

  • 1.

    湖南第一师范学院, 长沙 410205

  • 2.

    湖南省环境保护科学研究院, 长沙 410006

  • 基金项目:

    湖南省科技厅基金资助项目(2011SK3150)

    2012年度湖南省教育厅科学研究项目(12C0599)

  • 中图分类号: X703

Effect of low concentration of anionic surfactant LAS on activated sludge performance and pollutants removal behavior

  • 1.

    Hunan First Normal University, Changsha 410205, China

  • 2.

    Hunan Research Academy of Environmental Science, Changsha 410006, China

  • Fund Project:

  • 摘要: 采用SBR处理模拟废水,考察了不同浓度阴离子表面活性剂——烷基苯磺酸钠(LAS)对反应器活性污泥的影响。实验结果表明,低浓度表面活性剂LAS的投加,有利于提高SBR中活性污泥对COD和氨氮处理效率,并且活性污泥的沉降性以及微生物活性也随着LAS投加浓度的升高而升高。但是,当LAS的投加浓度过高时(1 mg/L),污泥表面产生起泡、乳化和微粒悬浮等现象,使大量固体陷入漂浮泡沫层,降低曝气池的充氧效率,最终导致污泥解体,沉降性变差,活性下降。
    Abstract: We examined the effect of different concentrations of LAS on activated sludge performance. Experiments were conducted with the synthetic wastewater in four lab-scale sequencing batch reactors (SBRs). The results showed that lower concentration of LAS addition improved the removal efficiencies of COD and ammonium, and increased the sludge performance of settling property, flocculation and microbial activity with increasing concentration of LAS. However, high level of LAS (1 mg/L) led to sludge surface produce foaming, emulsify and particles suspend. A lot of solid sink into the floating foam layer, reduced the oxygen filling efficiency of aeration pool and caused the sludge disintegration, resulting in bad settleability and lower microbial activity.
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  • [1] 刘永江, 王丹, 王升军, 等. 表面活性剂废水处理技术进展. 黑龙江农业科学, 2007, (5): 97-99 Liu Yongjiang, Wang Dan, Wang Shengjun, et al. Advance in treating waste water containing surfactants. Heilongjiang Agricultural Sciences, 2007, (5): 97-99(in Chinese)
    [2] Larsson N., Otrembska P., Villar M., et al. Liquid phase micro-extraction of linear alkylbenzene sulfonate anionic surfactants in aqueous samples. Membranes, 2011, 1(4): 299-313
    [3] 肖举强, 魏朝燕. 活化沸石去除废水中LAS的试验研究. 硫磷设计与粉体工程, 2007,(5):19-23 Xiao Juqiang, Wei Zhaoyan. Experiment and research on the removal of LAS in waste water by modified zeolite. Sulphur Phosphorus & Bulk Materials Handling Related Engineering, 2007,(5): 19-23(in Chinese)
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    [7] Becaglia S., Ghedinia C., Peeters S., et al. MBAS (methylene blue active substances) and LAS (linear alkylbenzene sulphonates) in Mediterranean coastal aerosols: Sources and transport processes. Atmospheric Environment, 2011, 45(37): 6788-6801
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  • 收稿日期:  2012-07-04
  • 刊出日期:  2013-09-15

低浓度LAS对活性污泥性质和去除污染物行为的影响

  • 1. 湖南第一师范学院, 长沙 410205
  • 2. 湖南省环境保护科学研究院, 长沙 410006
  • 收稿日期:  2012-07-04
基金项目:

湖南省科技厅基金资助项目(2011SK3150)

2012年度湖南省教育厅科学研究项目(12C0599)

摘要: 采用SBR处理模拟废水,考察了不同浓度阴离子表面活性剂——烷基苯磺酸钠(LAS)对反应器活性污泥的影响。实验结果表明,低浓度表面活性剂LAS的投加,有利于提高SBR中活性污泥对COD和氨氮处理效率,并且活性污泥的沉降性以及微生物活性也随着LAS投加浓度的升高而升高。但是,当LAS的投加浓度过高时(1 mg/L),污泥表面产生起泡、乳化和微粒悬浮等现象,使大量固体陷入漂浮泡沫层,降低曝气池的充氧效率,最终导致污泥解体,沉降性变差,活性下降。

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