Life-Cycle Energy Use and Greenhouse Gas Emissions of a Building-Scale Wastewater Treatment and Nonpotable Reuse System.
Life-Cycle Energy Use and Greenhouse Gas Emissions of a Building-Scale Wastewater Treatment and Nonpotable Reuse System.
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建筑规模废水处理和非饮用水再利用系统的生命周期能源使用和温室气体排放。
DOI：
10.1021/acs.est.5b01677
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发表时间：
2015
影响因子：
11.4
通讯作者：
K. Nelson
中科院分区：
文献类型：
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作者：
T. Hendrickson;M. T. Nguyen;M. Sukardi;Alexandre Miot;A. Horvath;K. Nelson
由于人口的不断增长以及传统水资源的质量和数量的不确定性，分散系统中的水处理和再利用预计将在我们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）来分析的能源消耗和温室气体（GHG）排放的运行生活机器（LM）的湿地处理系统，在办公楼的废水处理。该研究还评估了当地公用事业公司的集中式污水处理厂的性能，发现其效率明显高于LM（每处理体积的能源减少79%，温室气体排放减少98%）。为了创建功能等效的比较，该研究开发了一个假设场景，其中相同的LM设计流程通过集中式基础设施进行回收。这种比较表明，目前的LM具有能耗优势（减少8%），理论上改进的LM设计可能比集中式再利用系统具有温室气体优势（减少24%）。本研究中的方法可应用于其他案例研究和情景，以确定分散式水回用在选择替代方法以满足不断增长的水需求时，与集中式水回用相比，分散式水回用可以降低温室气体排放和能源使用的条件。
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.