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首页> 外文期刊>Water Research >Performance of an AnMBR pilot plant treating high-strength lipid wastewater: Biological and filtration processes
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Performance of an AnMBR pilot plant treating high-strength lipid wastewater: Biological and filtration processes

机译：AnMBR中试厂处理高强度脂质废水的性能：生物和过滤过程

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摘要

The performance of an anaerobic membrane bioreactor (AnMBR) treating wastewater with high levels of oil and grease content from a snacks factory is studied and its effectiveness is demonstrated. The relation between the reversible and the irreversible fouling rate and the fouling propensity of the fatty matter were evaluated under a subcritical flux of 7.9 and 8.3 L/m~2 h. Low Oil and Grease (O&G) concentrations of 500 mg/L produced an irreversible fouling rate of only 0.09 mbar/d, while the fouling rate was between 0.96 and 3.95 mbar/d for an average O&G concentration of 6 g/L. In spite of the significant increase in nitration resistance from 0.31 to 6.08 × 10~(12) m~(-1) after 40 days of continuous operation, the critical flux level hardly decreased from 11.1 to 9.7 L/(m~2 h). With regard to the biological process, after a start-up period with an organic loading rate (OLR) of below 2 kg COD/(m~3 d), the system was able to treat wastewater between 4.6 and 36 g O&G/L and the system remained stable for OLR at around 17 kg COD/(m~3 d) for 2.8 d, without inhibitory signals. Acclimated sludge quickly reached maximum methane production and digested substrate with high oil and grease content, observing an increase in palmitic acid the first days and constant levels of propionic acid while fatty acids were in the medium.
机译：研究了厌氧膜生物反应器（AnMBR）处理零食工厂中油脂含量高的废水的性能，并证明了其有效性。在7.9和8.3 L / m〜2 h的亚临界通量下，评估了脂肪物质的可逆和不可逆结垢率与结垢倾向之间的关系。 500 mg / L的低油和油脂（O＆G）浓度产生的不可逆结垢率仅为0.09 mbar / d，而平均O＆G浓度为6 g / L时结垢率在0.96和3.95 mbar / d之间。连续运行40天后，尽管抗硝化性从0.31显着提高到6.08×10〜（12）m〜（-1），但临界通量水平几乎没有从11.1降低到9.7 L /（m〜2 h） 。关于生物过程，在有机负荷率（OLR）低于2 kg COD /（m〜3 d）的启动阶段后，该系统能够处理4.6至36 g O＆G / L的废水。该系统对于OLR稳定在约17 kg COD /（m〜3 d）2.8 d，没有抑制信号。积聚的污泥迅速达到最大的甲烷产量，并消化了油脂含量高的底物，观察到棕榈酸在开始的第一天有所增加，而丙酸在培养基中处于恒定水平。

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  • 来源
    《Water Research》 |2014年第15期|203-215|共13页
  • 作者

    C. Ramos; A. Garcia; V. Diez;

  • 作者单位

    Department of Biotechnology and Food Science, Area of Chemical Engineering, University of Burgos, Faculty of Sciences, Pz. Misael Banuelos, 09001 Burgos, Spain;

    Department of Biotechnology and Food Science, Area of Chemical Engineering, University of Burgos, Faculty of Sciences, Pz. Misael Banuelos, 09001 Burgos, Spain;

    Department of Biotechnology and Food Science, Area of Chemical Engineering, University of Burgos, Faculty of Sciences, Pz. Misael Banuelos, 09001 Burgos, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Anaerobic membrane bioreactor(AnMBR); Oil and grease; Long-chain fatty acids; Filtration resistance; Membrane fouling;

    机译：厌氧膜生物反应器（AnMBR）;油和油脂;长链脂肪酸;耐过滤性膜污染;

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