High-Solids Anaerobic co-Digestion (HS-AcD) of sewage sludge (biosolids) with the organic fraction of municipal solid waste is a promising waste management alternative due to high methane yields, lower reactor volume requirements, lower energy inputs, and less leachate production than liquid anaerobic digestion. This study evaluated the environmental and economic burdens and benefits of HS-AcD of biosolids, Food Waste (FW), and Yard Waste (YW) using Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA) methods using Hillsborough County, Florida in the U.S. as a case study. Results for HS-AcD were compared with incineration, composting, and landfilling, with and without landfill gas use. The results showed that HS-AcD of a mixture of biosolids, FW, and YW had the lowest environmental impacts in all categories analyzed (global warming potential, acidification, eutrophication, and ecotoxicity). In terms of economics, HS-AcD had the lowest life cycle cost, with or without considering land acquisition. The results show that HS-AcD is the best choice to manage biosolids and the organic waste in Hillsborough County in terms of both environmental and economic sustainability.

中文翻译：

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高固体厌氧消化生物固体和有机废物管理的环境和经济生命周期比较评估。

污水污泥（生物固体）与城市固体废物有机部分的高固体厌氧共消化（HS-AcD）是一种有前途的废物管理替代方案，因为它具有较高的甲烷产量，较低的反应堆体积要求，较低的能源投入以及较少的沥滤液生产上比液体厌氧消化好。这项研究使用生命周期评估（LCA）和生命周期成本分析（LCCA）方法使用佛罗里达州希尔斯伯勒县评估了生物固体，食品垃圾（FW）和庭院垃圾（YW）的HS-AcD的环境和经济负担以及收益以美国为例。将HS-AcD的结果与焚化，堆肥和垃圾填埋（使用和不使用填埋气体）进行了比较。结果表明，生物固体混合物FW的HS-AcD 在分析的所有类别（全球变暖潜力，酸化，富营养化和生态毒性）中，YW和YW对环境的影响最小。就经济学而言，无论是否考虑征地，HS-AcD的生命周期成本最低。结果表明，就环境和经济可持续性而言，HS-AcD是管理希尔斯伯勒县生物固体和有机废物的最佳选择。