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首页> 外文期刊>Chemosphere >Impacts of epichlorohydrin-dimethylamine on coagulation performance and membrane fouling in coagulation/ultrafiltration combined process with different Al-based coagulants
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Impacts of epichlorohydrin-dimethylamine on coagulation performance and membrane fouling in coagulation/ultrafiltration combined process with different Al-based coagulants

机译：表氯醇-二甲胺对不同Al基混凝剂混凝/超滤过程中混凝性能和膜污染的影响

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摘要

Two kinds of aluminum-based coagulants and epichlorohydrin-dimethylamine (DAM-ECH) were used in the treatment of humic acid-kaolin simulated water by coagulation-ultrafiltration (C-UF) hybrid process. Coagulation performance, floc characteristics, including floc size, compact degree, and strength were investigated in this study. Ultrafiltration experiments were conducted by a dead-end batch unit to implement the resistance analyses to explore the membrane fouling mechanisms. Results showed that DAM-ECH aid significantly increased the UV254 and DOC removal efficiencies and contributed to the formation of larger and stronger flocs with a looser structure. Aluminum chloride (Al) gave rise to better coagulation performance with DAM-ECH compared with poly aluminum chloride (PACT). The consequences of ultrafiltration experiments showed that DAM-ECH aid could reduce the membrane fouling mainly by decreasing the cake layer resistance. The flux reductions for PACT, Al/DAM-ECH (dosing both AI and DAM-ECH) and PACl/DAM-ECH (dosing both PACT and DAM-ECH) were 62%, 56% and 44%, respectively. Results of this study would be beneficial for the application of PACl/DAM ECH and Al/DAM ECH composite coagulants in water treatment processes. (C) 2016 Elsevier Ltd. All rights reserved.
机译：两种铝基混凝剂和环氧氯丙烷-二甲胺（DAM-ECH）通过混凝-超滤（C-UF）混合工艺处理腐殖酸-高岭土模拟水。在本研究中研究了混凝性能，絮凝特性，包括絮凝尺寸，致密度和强度。由死角批处理单元进行超滤实验，以进行阻力分析，以探索膜污染的机理。结果表明，DAM-ECH助剂显着提高了UV254和DOC的去除效率，并有助于形成更大，更结实，结构更松散的絮凝物。与聚氯化铝（PACT）相比，DAM-ECH使氯化铝（Al）的混凝性能更好。超滤实验的结果表明，DAM-ECH助剂可主要通过降低滤饼层阻力来减少膜结垢。 PACT，Al / DAM-ECH（同时使用AI和DAM-ECH）和PACl / DAM-ECH（同时使用PACT和DAM-ECH）的通量减少分别为62％，56％和44％。这项研究的结果将有利于在水处理过程中应用PACl / DAM ECH和Al / DAM ECH复合凝结剂。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Chemosphere》 |2016年第9期|228-234|共7页
  • 作者

    Bu Fan; Gao Baoyu; Li Ruihua; Sun Shenglei; Yue Qinyan;

  • 作者单位

    Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;

    Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;

    Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;

    Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;

    Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;

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

    Aluminum-based coagulant; DAM-ECH aid; Coagulation; Floc properties; Membrane fouling;

    机译：铝基混凝剂;DAM-ECH助剂;混凝;絮凝性能;膜污染;

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