Municipal Solid Waste Leachate Organic Matter Generation and Removal

城市生活垃圾渗滤液有机物的产生与去除

• 批准号: 1438416
• 负责人: Debra Reinhart
• 金额: $ 31.54万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1438416&HistoricalAwards=false
• 关键词: Municipal; Solid; Waste; Leachate; Organic

CBET-1438416 This research addresses the management of a particularly challenging constituent of leachate from landfills, leachate organic matter (LOM), with the goal of reducing the long-term risks and costs associated with landfill operation. Through this research, for the first time, information will be provided that may lead to the control of LOM that passes through biological treatment systems. Further, by providing information regarding the potential for natural systems to assimilate low level contributions of non-biodegradable LOM from closed landfills, society may be relieved from long-term financial burdens of landfill post-closure care (PCC). A better understanding of LOM fate and behavior can provide regulators with the information needed to confidently approve reducing or terminating landfill PCC. The proposed research has clear societal benefits associated with reduced cost and risk of landfills, a greater understanding of leachate discharges to the environment, and more sustainable solid waste management.This research will examine the chemical nature of leachate organic matter (LOM) to better understand the humification of landfilled waste and the fate of discharged LOM to the environment after in situ landfill treatment, co-treatment at a Waste Water Treatment Plant, or on-site biological treatment. The hypothesis is that recalcitrant LOM production is associated with specific components of solid waste, therefore the avoidance of these components in future landfills could result in enhanced leachate treatability and reduced treatment cost. It is further hypothesized that the consequences of discharging LOM in treated leachate from existing landfills can be attenuated through passive sunlight-driven photolysis. Specific research questions to be addressed include the following: (1) which waste components contribute to recalcitrant LOM; (2) can we use advanced characterization tools to better understand the potential for LOM biodegradation, photolysis, or contaminant transport; and (3) what is the fate of recalcitrant LOM in aquatic environments (e.g., wetlands and surface waters), with a focus on photolysis? This research will be accomplished by well characterizing LOM, conducting microcosms examining the evolution of LOM from waste components, and evaluating LOM photolysis of leachate samples irradiated by natural sunlight and a solar simulator. The broader impacts of this proposed research also include the advancement of understanding of chemistry and photochemistry of organic matter. The proposed research is a multidisciplinary project that involves a diverse group of female researchers, bridging environmental engineering and physical science fields and impacting multiple areas of the scientific community. The doctoral researcher assigned to this project is a female minority student, contributing to diversity in the science and engineering workforce. Outreach to art and design students through UCFSTEAM (Science, Technology, Engineering, Art, and Mathematics) activities will also provide broader impacts. Researcher involvement with K-16 students through school visitations provides an opportunity to increase STEM understanding.

CBET-1438416这项研究探讨了垃圾填埋场，浸出有机物（LOM）的特别具有挑战性的渗滤液组成部分的管理，目的是降低与垃圾填埋场运营相关的长期风险和成本。通过这项研究，将首次提供信息，可能导致控制通过生物治疗系统的LOM。此外，通过提供有关自然系统吸收封闭垃圾填埋场不可降解LOM的低水平贡献潜力的信息，社会可以减轻垃圾填充后填埋后护理（PCC）的长期财务负担。对LOM命运和行为的更好理解可以为监管机构提供自信地批准减少或终止垃圾填埋PCC所需的信息。拟议的研究具有与降低的成本和垃圾填埋场风险相关的明确社会利益，对浸出液的排放量的更深入的了解以及更可持续的固体废物管理。这项研究将研究浸出有机物（LOM）的化学性质（LOM），以更好地了解垃圾填充浪费的嗡嗡声以及在现场治疗后对环境的污染量，以供无处不在的待遇，或者对环境进行了待遇，或者在陆地上进行了待遇，或者是在供水，或者在一家杂货店进行了待遇，或者在一家造成的饮食中，或者在一家造成的饮食局部处理，或者在一家造成的饮食局部处理。假设是，顽固的LOM产生与固体废物的特定组成部分有关，因此避免在未来垃圾填埋场中避免这些成分可能会导致浸出能力增强和治疗成本降低。进一步假设，可以通过被动阳光驱动的光解会减弱从现有垃圾填埋场中排出LOM的后果。要解决的具体研究问题包括以下内容：（1）哪些废物成分有助于顽固的LOM； （2）我们可以使用先进的特征工具来更好地了解LOM生物降解，光解或污染物转运的潜力； （3）在水生环境（例如湿地和​​地表水）中，顽固lom的命运是什么，重点是光解？这项研究将通过对LOM进行良好表征，进行缩影来实现这项研究，从而检查LOM从废物成分中的演变，并评估自然阳光和太阳能模拟器照射的浸出样品的LOM光解。这项拟议的研究的更广泛影响还包括对有机物的化学和光化学的理解的发展。拟议的研究是一个多学科的项目，涉及一组各种各样的女性研究人员，桥接环境工程和物理科学领域，并影响科学界的多个领域。分配给该项目的博士研究员是一名女性少数群体学生，这有助于科学和工程劳动力的多样性。通过UCFSTEAM（科学，技术，工程，艺术和数学）活动向艺术和设计学生推广还将带来更广泛的影响。研究人员通过学校探视与K-16学生的参与提供了一个机会，可以增加STEM的理解。