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首页> 外文期刊>Environmental engineering research >Optimization of membrane fouling process for mustard tuber wastewater treatment in an anoxic-oxic biofilm-membrane bioreactor
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Optimization of membrane fouling process for mustard tuber wastewater treatment in an anoxic-oxic biofilm-membrane bioreactor

机译：缺氧-氧化生物膜-膜生物反应器处理芥菜废水的膜污染工艺优化

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摘要

Membrane bioreactor (MBR) technology has previously been used by water industry to treat high salinity wastewater. In this study, an anoxic-oxic biofilm-membrane bioreactor (AOB-MBR) system has been developed to treat mustard tuber wastewater of 10% salinity (calculated as NaCl). To figure out the effects of operating conditions of the AOB-MBR on membrane fouling rate (K_v), response surface methodology was used to evaluate the interaction effect of the three key operational parameters, namely time interval for pump (t), aeration intensity (U_(Gr)) and transmembrane pressure (TMP). The optimal condition for lowest membrane fouling rate (K_v) was obtained: time interval was 4.0 min, aeration intensity was 14.6 m~3/(m~2·h) and transmembrane pressure was 19.0 kPa. And under this condition, the treatment efficiency with different influent loads, i.e. 1.0, 1.9 and 3.3 kg COD m~(-3)d~(-1) was researched. When the reactor influent load was less than 1.9 kg COD m~(-3)d~(-1), the effluent could meet the third discharge standard of "Integrated Wastewater Discharge Standard". This study suggests that the model fitted by response surface methodology can predict accurately membrane fouling rate within the specified design space. And it is feasible to apply the AOB-MBR in the pickled mustard tuber factory, achieving satisfying effluent quality.
机译：膜生物反应器（MBR）技术先前已被水工业用于处理高盐度废水。在这项研究中，已开发出一种缺氧-缺氧生物膜-膜生物反应器（AOB-MBR）系统，以处理盐度为10％（按NaCl计算）的芥菜块茎废水。为了找出AOB-MBR的运行条件对膜结垢率（K_v）的影响，使用响应面方法评估了三个关键运行参数（泵的时间间隔（t），曝气强度（ U_（Gr））和跨膜压（TMP）。获得了最低膜污染率（K_v）的最佳条件：时间间隔为4.0 min，曝气强度为14.6 m〜3 /（m〜2·h），跨膜压力为19.0 kPa。在此条件下，研究了1.0、1.9和3.3 kg COD m〜（-3）d〜（-1）不同进水负荷下的处理效率。当反应器进水负荷小于1.9 kg COD m〜（-3）d〜（-1）时，出水可以达到《综合废水排放标准》的第三项排放标准。这项研究表明，通过响应曲面方法拟合的模型可以准确地预测指定设计空间内的膜污染率。将AOB-MBR应用于腌制芥末块茎工厂是可行的，可达到令人满意的废水质量。

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  • 来源
    《Environmental engineering research》 |2016年第2期|196-202|共7页
  • 作者

    Hongxiang Chai; Liang Li; Yinghua Wei; Jian Zhou; Wei Kang; Zhiyu Shao; Qiang He;

  • 作者单位

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

    Beijing Urban Construction Design & Development Group Co. Limited, Equipment room of Southwest Institute. Beijing 100037, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China,National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China;

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  • 正文语种 eng
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  • 关键词

    Anoxic-aerobic biofilm-membrane bioreactor (AOB-MBR); Membrane fouling; Mustard tuber wastewater; Response surface methodology; Treatment efficiency;

    机译：缺氧-好氧生物膜-膜生物反应器（AOB-MBR）;膜结垢;芥菜块茎废水;响应面方法;处理效率;

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