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首页> 外文期刊>Journal of Environmental Management >Combined dual-size foam glass media filtration process with micro-flocculation for simultaneous removal of particulate and dissolved contaminants in urban road runoff
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Combined dual-size foam glass media filtration process with micro-flocculation for simultaneous removal of particulate and dissolved contaminants in urban road runoff

机译：组合双型泡沫玻璃介质过滤过程，微絮凝，用于同时去除城市道路径流中的颗粒状和溶解污染物

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摘要

In this study, a combined media filtration process with micro-flocculation (CMF) was developed, to simultaneously treat particulate and dissolved contaminants in urban road runoff. Dual-size foam glass media with stone and sand layers were applied and the efficiency of road runoff treatment was investigated according to filtration and micro-flocculation under various experimental conditions (stone/sand layer ratio, linear velocity, and coagulant types). Moreover, the removal efficiencies of suspended solids (SS), phosphorus, organic carbon, and heavy metals (Zn, Cu, Pb, Cd) by CMF were evaluated. The removal rate of SS was maintained to be above 84.1% for 1 h filtration by the dual-size foam glass, regardless of increasing pressure. The removal of phosphorus by micro-flocculation was more suitable in alum than ferric due to a higher initial floe growth rate and an increased particle size. The performance of the CMF was significantly improved over media filtration only process (MF) in removing both particulate and dissolved contaminants. The removal efficiency of all particulate pollutants by CMF was found to be more than 90%, and notably, the dissolved phosphorus, which was mostly not removed by MF, was also removed by 97.4%. Meanwhile, the backwash efficiency of CMF was half that of MF. Physical removal mechanisms, such as internal diffusion, dominated MF, whereas chemical removal mechanisms, such as adsorption and surface precipitation, dominated CMF. These results show the potential of the CMF process for the treatment of urban road runoff and identify the removal mechanisms of the filtration process that use micro-flocculation with dual-size foam glass.
机译：在该研究中，开发了一种具有微絮凝（CMF）的组合介质过滤方法，同时治疗城市道路径流中的颗粒和溶解的污染物。采用具有石头和砂层的双尺寸泡沫玻璃介质，并根据各种实验条件（石/砂层比，线性速度和凝结剂类型）进行滤过和微絮凝，研究了道路径流处理的效率。此外，评价悬浮固体（Ss），磷，有机碳和重金属（Zn，Cu，Pb，Cd）的去除效率被评价CMF。无论压力增加，双尺寸泡沫玻璃，Ss的去除率保持在84.1％以上。由于较高的初始剥落生长速率和增加的粒度，通过微絮凝除去磷的除去比丙克更合适。在除去颗粒和溶解的污染物中，CMF的性能显着改善了培养基过滤（MF）。发现CMF的所有颗粒污染物的去除效率超过90％，值得注意的是，大多数未通过MF除去的溶解磷也被除去97.4％。同时，CMF的反洗效率为MF的一半。物理去除机制，例如内部扩散，主导的MF，而化学除去机制，例如吸附和表面沉淀，所列CMF。这些结果表明了CMF工艺用于治疗城市道路径流的潜力，并确定使用双型泡沫玻璃的微絮凝的过滤过程的去除机制。

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  • 来源
    《Journal of Environmental Management》 |2021年第1期|111475.1-111475.8|共8页
  • 作者

    Han-Saem Lee; Byung-Ran Lim; Jin Hur; Hee-Seo Kim; Hyun-Sang Shin;

  • 作者单位

    Department of Environment Energy Engineering Seoul National University of Science & Technology Seoul 01811 South Korea;

    Department of Environment Energy Engineering Seoul National University of Science & Technology Seoul 01811 South Korea;

    Department of Environment & Energy Sejong University Seoul 05006 South Korea;

    Department of Environment Energy Engineering Seoul National University of Science & Technology Seoul 01811 South Korea;

    Department of Environment Energy Engineering Seoul National University of Science & Technology Seoul 01811 South Korea;

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

    Road runoff; Media filtration; Foam glass; Dual-size; Micro-flocculation;

    机译：道路径流;媒体过滤;泡沫玻璃;双尺寸;微絮凝;

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