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Environmental Comparison Of Biosolids Management Systems Using Life Cycle Assessment

机译：使用生命周期评估的生物固体管理系统的环境比较

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摘要

To fill a gap in the information available to nonmetropolitan policy makers, eight scenarios combining processing technologies and end-uses for biosolids products associated with a 40 000 equivalent-person town were modeled using environmental life cycle assessment (LCA). An uncertainty analysis examined several key assumptions.rnThe results showed that the reuse of biosolids products can be environmentally beneficial but transportation distances can change the preferences between technologies, and drying biosolids using petrochemical methane rather than biogas (produced endogenously in the wastewater facility) significantly worsens environmental performance. System scale can also invert option preferences.rnThis work demonstrates an application of LCA to a strategic engineering question. We also examine the methodological feasibility of considering carbon sequestration and water offsets beyond those typical of previous studies. As the development of scientific data regarding the benefits of biosolids recycling develops, there may be potential to reward agricultural businesses that choose to reduce their environmental burdens using biosolids. A life cycle management approach to this will be necessary.
机译：为了填补非大都市政策制定者可获得的信息空白，使用环境生命周期评估（LCA）对结合了与4万当量城镇相关的生物固体产品的加工技术和最终用途的八种情景进行了建模。不确定性分析检查了几个关键假设。结果表明，生物固体产品的再利用可能对环境有益，但是运输距离可以改变技术之间的偏好，并且使用石化甲烷而不是沼气（废水设施中内生的沼气）干燥生物固体会大大恶化。环保性能。系统规模还可以反转选项首选项。这项工作演示了LCA在战略工程问题中的应用。我们还研究了考虑碳固存和水补偿的方法学可行性，这些研究超出了以往的研究范围。随着有关生物固体回收效益的科学数据的发展，可能会奖励那些选择使用生物固体减轻环境负担的农业企业。为此，必须采用生命周期管理方法。

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  • 来源
    《Environmental Science & Technology》 |2009年第8期|2674-2679|共6页
  • 作者

    GREGORY M.PETERS; HAZEL V.ROWLEY;

  • 作者单位

    School of Civil and Environmental Engineering, University of New South Wales, UNSW Sydney NSW 2052, Australia;

    School of Civil and Environmental Engineering, University of New South Wales, UNSW Sydney NSW 2052, Australia;

  • 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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  • 正文语种 eng
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