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首页> 外文期刊>Journal of Cleaner Production >An innovative anaerobic MBR-reverse osmosis-ion exchange process for energy-efficient reclamation of municipal wastewater to NEWater-like product water
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An innovative anaerobic MBR-reverse osmosis-ion exchange process for energy-efficient reclamation of municipal wastewater to NEWater-like product water

机译：一种创新的厌氧MBR-反渗透-离子交换工艺，可将市政废水高效再生为类似NEWater的产品水

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摘要

The rapid population growth and urbanization have led to an increasing need on recycle and reuse of municipal wastewater. In the current practice for high-grade reclaimed water production, municipal wastewater was first treated by conventional biological process, and further purified through micro filtration and reverse osmosis. However, such a multi-stage process has received more and more critiques due to the process complexity, intensive energy consumption, excessive sludge production and large footprint. To address these emerging issues, this study evaluated the feasibility of an innovative integrated anaerobic membrane bioreactor (AnMBR)-reverse osmosis (RO)-ion exchange (IE) process for treatment of municipal wastewater to high-grade reclaimed water with high energy efficiency and minimized waste sludge production. In this integrated process, an AnMBR was employed as the lead for energy recovery through direct COD capture, and AnMBR effluent was subsequently reclaimed to NEWater-like product water through combined RO and IE. Results showed that nearly 76.8% of influent COD was converted to methane in AnMBR equivalent to 0.41 kWh/m(3) wastewater treated, while more than 95% of organic carbon, ammonium, phosphate, major ions and cations in AnMBR effluent were rejected by RO. After further polishing by IE, the product water quality appeared to be comparable or even better than the typical NEWater quality in Singapore. This study showed that the integrated AnMBR-RO-IE process could produce NEWater-like product water with compact footprint, near-zero sludge production, high operation stability, maximized energy recovery and reduced energy consumption compared to the current process for NEWater production from municipal wastewater. It is expected that the proposed process can offer new insights into the direction of future wastewater reclamation. (C) 2019 Elsevier Ltd. All rights reserved.
机译：人口的快速增长和城市化导致对市政废水的回收和再利用的需求增加。在当前的高级再生水生产实践中，市政废水首先通过常规生物工艺进行处理，然后通过微滤和反渗透进一步纯化。然而，由于该过程的复杂性，高能耗，过多的污泥产生和大的占地面积，这种多阶段的方法受到越来越多的批评。为了解决这些新出现的问题，本研究评估了一种创新的集成厌氧膜生物反应器（AnMBR）-反渗透（RO）-离子交换（IE）工艺用于处理市政废水到具有高能效的高等级再生水的可行性。减少废物污泥的产生。在该集成过程中，AnMBR被用作通过直接COD捕获进行能量回收的线索，随后通过RO和IE的组合将AnMBR废水回收为类似NEWater的产品水。结果表明，将近76.8％的进水COD在AnMBR中转化为甲烷，相当于0.41 kWh / m（3）处理的废水，而AnMBR废水中超过95％的有机碳，铵，磷酸盐，主要离子和阳离子被拒绝。 RO。通过IE进一步抛光后，产品水质似乎与新加坡的典型NEWater水质相当甚至更好。这项研究表明，与目前市政市政生产NEWater的工艺相比，集成的AnMBR-RO-IE工艺可以生产出类似于NEWater的产品水，占地面积小，污泥接近零，运行稳定性高，能量回收率最大化以及能耗降低。废水。预计拟议的过程可以为未来废水回收的方向提供新的见解。 （C）2019 Elsevier Ltd.保留所有权利。

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  • 来源
    《Journal of Cleaner Production》 |2019年第1期|1287-1293|共7页
  • 作者

    Gu Jun; Liu Hang; Wang Siyu; Zhang Meng; Liu Yu;

  • 作者单位

    Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Adv Environm Biotechnol Ctr, 1 Cleantech Loop, Singapore 637141, Singapore;

    Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Adv Environm Biotechnol Ctr, 1 Cleantech Loop, Singapore 637141, Singapore;

    Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Adv Environm Biotechnol Ctr, 1 Cleantech Loop, Singapore 637141, Singapore|Nanyang Technol Univ, Interdisciplinary Grad Sch, 50 Nanyang Ave, Singapore 639798, Singapore;

    Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Adv Environm Biotechnol Ctr, 1 Cleantech Loop, Singapore 637141, Singapore;

    Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Adv Environm Biotechnol Ctr, 1 Cleantech Loop, Singapore 637141, Singapore|Nanyang Technol Univ, Sch Civil & Environm Engn, 50 Nanyang Ave, Singapore 639798, Singapore;

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  • 正文语种 eng
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  • 关键词

    Municipal wastewater reclamation; Energy recovery; Minimized sludge production; Anaerobic MBR; Reverse osmosis; Ion exchange;

    机译：市政废水回收;能量回收;污泥减至最少;厌氧MBR;反渗透;离子交换;

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