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首页> 外文期刊>Environmental Science & Technology >Life-Cycle Energy Use and Greenhouse Gas Emissions of a Building-Scale Wastewater Treatment and Nonpotable Reuse System
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Life-Cycle Energy Use and Greenhouse Gas Emissions of a Building-Scale Wastewater Treatment and Nonpotable Reuse System

机译：建筑规模废水处理和非饮用水回用系统的生命周期能源使用和温室气体排放

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摘要

Treatment and water reuse in decentralized systems is envisioned to play a greater role in our future urban water infrastructure due to growing populations and uncertainty in quality and quantity of traditional water resources. In this study, we utilized life-cycle assessment (LCA) to analyze the energy consumption and greenhouse gas (GHG) emissions of an operating Living Machine (LM) wetland treatment system that recycles wastewater in an office building. The study also assessed the performance of the local utility's centralized wastewater treatment plant, which was found to be significantly more efficient than the LM (79% less energy, 98% less GHG emissions per volume treated). To create a functionally equivalent comparison, the study developed a hypothetical scenario in which the same LM design flow is recycled via centralized infrastructure. This comparison revealed that the current LM has energy consumption advantages (8% less), and a theoretically improved LM design could have GHG advantages (24% less) over the centralized reuse system. The methodology in this study can be applied to other case studies and scenarios to identify conditions under which decentralized water reuse can lower GHG emissions and energy use compared to centralized water reuse when selecting alternative approaches to meet growing water demands.
机译：由于人口的增长以及传统水资源的质量和数量的不确定性，分散系统中的处理和水再利用将在未来的城市水基础设施中发挥更大的作用。在这项研究中，我们利用生命周期评估（LCA）分析了运行中的生活机械（LM）湿地处理系统的能量消耗和温室气体（GHG）排放，该系统在办公楼中回收废水。该研究还评估了当地公用事业公司的集中式废水处理厂的性能，发现该厂的效率显着高于LM（每处理体积的能耗降低79％，GHG排放降低98％）。为了创建功能上等效的比较，该研究提出了一种假设方案，其中相同的LM设计流程通过集中式基础架构进行回收。这种比较表明，与集中式复用系统相比，当前的LM具有能耗优势（减少了8％），从理论上改进的LM设计可以具有GHG优势（减少了24％）。本研究中的方法可以应用于其他案例研究和方案，以确定在选择替代方法以满足不断增长的用水需求时，与集中式回用水相比，分散式回用水可以降低温室气体排放和能源使用的条件。

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  • 来源
    《Environmental Science & Technology》 |2015年第17期|10303-10311|共9页
  • 作者

    Thomas P. Hendrickson; Mi T. Nguyen; Marsha Sukardi; Alexandra Miot; Arpad Horvath; Kara L. Nelson;

  • 作者单位

    Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720-1710, United States;

    Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720-1710, United States,ReNUWIt Engineering Research Center, University of California, Berkeley 94720, United States;

    San Francisco Public Utilities Commission, San Francisco, California 94102, United States;

    San Francisco Public Utilities Commission, San Francisco, California 94102, United States;

    Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720-1710, United States,ReNUWIt Engineering Research Center, University of California, Berkeley 94720, United States;

    Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720-1710, United States,ReNUWIt Engineering Research Center, University of California, Berkeley 94720, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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