Chemical Oxidation Treatment End-Points for Soil and Groundwater Remediation

土壤和地下水修复的化学氧化处理终点

• 批准号: 4420-2013
• 负责人: Thomson, Neil
• 金额: $ 1.89万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=666806
• 关键词: Chemical; Oxidation; Treatment; End; Points

Contaminated lands (so-called brownfields) pose a threat to human and ecosystem health and are an impediment to urban intensification which harms local economies. In situ chemical oxidation (ISCO) has emerged as a technology with the potential for cost effective remediation of contaminated sites. Permanganate and peroxide are two aqueous oxidants which have been widely used and recently persulfate has gained popularity. The remediation community has significant experience with many aspects of ISCO; however, there remain significant areas for discovery and innovation.****The overall objective of this research proposal is to determine remediation end-points for the ISCO treatment of subsurface systems where multicomponent non-aqueous phase liquids (NAPLs) are present. While previous research has focused on the reactivity of dissolved phase organic compounds, the proposed research will address the degree to which multicomponent NAPLs can be degraded by chemical oxidants. Quantification of these end-points for various chemical oxidant systems and NAPL mixtures will provide key information on potential treatment effectiveness and the associated remedial system life cycle required to meet treatment goals.****To satisfy this objective a variety of bench-scale and field experiments supported by appropriate data analyses and computational modelling will be executed. These experiments will be used to evaluate the rate and extent of degradation of gasoline range organics, diesel range organics and manufactured gas plant NAPLs by chemical oxidation. Novel methods will be used to improve treatment end-point for selected systems. The proposed effort will contribute essential research, generate technological innovation, and train highly qualified personnel. Direct benefits to the Canadian economy will occur by fostering the development and improved understanding of a technology that can accelerate the re-development of brownfield sites in Canada.

受污染的土地（所谓的棕地）对人类和生态系统健康构成威胁，并阻碍城市集约化，损害当地经济。 原位化学氧化（ISCO）已成为一种具有成本效益的污染场地修复技术。 过硫酸盐和过氧化物是两种广泛使用的水溶液氧化剂，近年来过硫酸盐的应用越来越广泛。 补救界在《职业分类》的许多方面都有丰富的经验;然而，仍有许多领域有待发现和创新。本研究提案的总体目标是确定存在多组分非水相液体（NAPL）的地下系统ISCO处理的修复终点。 虽然以前的研究主要集中在溶解相有机化合物的反应性，但拟议的研究将解决多组分NAPLs可被化学氧化剂降解的程度。 对各种化学氧化剂系统和非水相液体混合物的这些终点进行量化，将提供关于潜在处理效果和满足处理目标所需的相关补救系统生命周期的关键信息。为了实现这一目标，将进行各种实验室规模和实地实验，并辅之以适当的数据分析和计算建模。 这些实验将用于评估通过化学氧化降解汽油范围有机物、柴油范围有机物和人造气厂NAPL的速率和程度。 新方法将用于改善选定系统的治疗终点。 拟议的努力将有助于基本研究，产生技术创新，并培养高素质的人才。 通过促进发展和提高对一项技术的认识，将对加拿大经济产生直接的好处，这项技术可以加速加拿大布朗菲尔德的再开发。