Evaluation and optimization of in situ chemical oxidation for groundwater remediation

地下水是一种极其重要的、有条件可再生的自然资源，用于家庭和农业消费，并与地表水系统保持物理和化学平衡。多种有害有机化合物造成的污染对生态系统和人类构成迫在眉睫的健康风险，部分原因是这些化合物在地下环境中具有毒性和持久性。被以前的工业或其他用途污染的土地可能会闲置多年，对生产性重新开发构成障碍。在过去三十年中，在查明、调查和补救存在不可接受的污染程度的地点方面取得了重大进展。尽管作出了这一努力，但清理已知场址、有待发现的遗留场址和最近发生过溢漏和意外释放的场址仍将是一项重大挑战。在可预见的未来，将有大量资金用于修复 加拿大的棕地保护人类和生态系统的健康。 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。这项研究工作将评估加强或优化ISCO成功应用的机会，以处理污染场地存在的有机化合物。该研究将强调现场演示和关键评估，并将得到实验室规模实验和数值模拟的支持。在这项研究工作中将使用三个实地地点。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。这项研究的结果将提高治疗效果和效率，将ISCO应用于更广泛的地点，并提高对科学和工程的理解。直接受益于 加拿大经济将通过促进发展和提高对一项技术的理解来实现，该技术可以加速加拿大布朗菲尔德场地的再开发，并为加拿大的顾问提供技术知识，以利用全球的机会。

Groundwater is an immensely important and conditionally renewable natural resource that is used as a supply for domestic and agricultural consumption and sustains a physical and chemical balance with the surface water system. Contamination caused by a wide spectrum of hazardous organic compounds poses an imminent health risk to ecosystems and humans due, in part, to their toxicity and persistence in the subsurface environment. Land contaminated by former industrial or other uses may sit idle for years, posing a barrier to productive redevelopment. Over the last three decades there has been substantial progress to identify, investigate and remediate sites where an unacceptable level of contamination exists. Despite this effort, the clean-up of known sites, yet to be discovered legacy sites and sites where recent spills and accidental releases have occurred will be a major challenge. For the foreseeable future, a significant level of funds will be spent on the remediation of brownfields in Canada to protect human and ecosystem health. In situ chemical oxidation (ISCO) has emerged as a technology with the potential for cost effective remediation of contaminated sites. This research effort will evaluate opportunities to enhance or optimize the successful application of ISCO to treat organic compounds present at contaminated sites. The research will emphasize field demonstration and critical evaluation, and will be supported by bench-scale experimentation and numerical modelling. Three field sites will be used in this research effort. The proposed effort will contribute essential research, generate technological innovation, and train highly qualified personnel. The findings from this research will lead to improved treatment effectiveness and efficiency, application of ISCO to a broader range of sites, and an improvement in scientific and engineering understanding. Direct benefits to the Canadian economy will occur by fostering the development and improved understanding of a technology that can accelerate the redevelopment of brownfield sites in Canada, and equipping Canadian based consultants with the technical knowledge to exploit opportunities worldwide.