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首页> 外文期刊>Journal of the American Water Resources Association >Comparing Green and Grey Infrastructure Using Life Cycle Cost and Environmental Impact: A Rain Garden Case Study in Cincinnati, OH
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Comparing Green and Grey Infrastructure Using Life Cycle Cost and Environmental Impact: A Rain Garden Case Study in Cincinnati, OH

机译：使用生命周期成本和环境影响比较绿色和灰色基础设施：俄亥俄州辛辛那提市的雨林案例研究

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摘要

Green infrastructure (GI) is quickly gaining ground as a less costly, greener alternative to traditional methods of stormwater management. One popular form of GI is the use of rain gardens to capture and treat stormwater. We used life cycle assessment (LCA) to compare environmental impacts of residential rain gardens constructed in the Shepherd's Creek watershed of Cincinnati, Ohio to those from a typical detain and treat system. LCA is an internationally standardized framework for analyzing the potential environmental performance of a product or service by including all stages in its life cycle, including material extraction, manufacturing, use, and disposal. Complementary to the life cycle environmental impact assessment, the life cycle costing approach was adopted to compare the equivalent annual costs of each of these systems. These analyses were supplemented by modeling alternative scenarios to capture the variability in implementing a GI strategy. Our LCA models suggest rain garden costs and impacts are determined by labor requirement; the traditional alternative's impacts are determined largely by the efficiency of wastewater treatment, while costs are determined by the expense of tunnel construction. Gardens were found to be the favorable option, both financially (similar to 42% cost reduction) and environmentally (62-98% impact reduction). Wastewater utilities may find significant life cycle cost and environmental impact reductions in implementing a rain garden plan.
机译：与传统的雨水管理方法相比，绿色基础设施（GI）作为一种成本更低，更绿色的替代品正在迅速普及。地理标志的一种流行形式是使用雨林来捕获和处理雨水。我们使用生命周期评估（LCA），将在俄亥俄州辛辛那提的Shepherd's Creek分水岭上建造的住宅雨花园与典型的拘留和处理系统所产生的环境影响进行了比较。 LCA是一个国际标准化的框架，用于通过分析产品或服务生命周期的所有阶段（包括材料提取，制造，使用和处置）来分析其潜在的环境绩效。作为生命周期环境影响评估的补充，采用了生命周期成本核算方法来比较每个系统的等效年成本。通过对替代方案进行建模来补充这些分析，以捕获实施GI策略时的可变性。我们的LCA模型表明，雨水花园的成本和影响取决于人工需求；传统替代方案的影响主要取决于废水处理的效率，而成本则取决于隧道建设的费用。无论从财政上（减少42％的成本）还是从环境上（减少62-98％的影响），都发现花园是一个不错的选择。废水公用事业公司在实施雨花园计划时可能会发现生命周期成本显着降低并且对环境的影响减少。

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