In-Situ Sediment Remediation Using Benthic Waterjet Amendment Placement

描述(由申请人提供)： 这项研究的目标是开发原位沉积物修复修正的放置方法。将不会开发修正案，但研究重点是开发水射流设计和参数，以提供已在实验室规模证明的修正案。这里开发的水射流设计和参数将具体地导致修正放置的效率和精确度，这将允许有效地使用新开发的修正，这些修正是昂贵的，并且可能促进对被认为过于昂贵或无法交付的其他修正的研究。水射流放置方法已被证明具有较低的再悬浮和对底栖生物群落的有害影响，一个具体目标是进一步制定方法、设计和程序，以进一步减少这些损害。该项目将为扩大规模和过渡到实地规模的测试和实施提供直接投入，设计和规划阶段将在该项目时间表内开始。理论基础：污染沉积物的修复目前效率不高，选择有限，目前正在发展的基础科学侧重于补救修正，但没有有效的工程利用这些修正的交付和放置方法。针对几乎所有常见的沉积物污染物，特别是多氯联苯、多环芳烃和氧化还原敏感金属，可应用水射流放置一系列修正。研究设计：研究设计将专注于在不断升级的规模上优化设计和运行参数，以满足上面列出的目标，并将在项目期内产生可用于现场的技术。组建的团队在基础科学发现到超大型、野外项目和技术开发甚至应用方面具有丰富的经验。这一系列的经验和专业知识是独一无二的，肯定会有助于使这项研究努力取得成功的可能性很大。与公众健康相关：受污染的沉积物对人类健康构成重大威胁，污染食物链的底层。补救支出预计将达到数十亿美元，但只有三种选择。所有这些都不能真正修复沉积物。通过提高修复这些站点的效率和降低成本，甚至可以真正修复更多的站点。

DESCRIPTION (provided by applicant): This research endeavor has the broad goal to develop placement methods for in-situ sediment remediation amendments. Amendments will not be developed, but research is focused upon developing the water jet design and parameters to deliver amendments that have been proven at a bench-scale. Waterjet design and parameters developed herein will specifically result in efficiency and precision in amendment placement that will allow for efficient use of newly developed amendments, which are expensive, and likely foster the research into other amendments that were though to be too expensive or undeliverable. Waterjets placement methods are already shown to have lower resuspension and harmful impact to the benthic community, and a specific objective is to further develop methods, designs and procedures to minimize these detriments even further. This project will provide direct input for scale-up and transition to field-scale testing and implementation, with design and planning stages starting within this project schedule. RATIONALE: Remediation of contaminated sediments is not currently efficient with limited options, and the basic science developing currently has a focus upon remedial amendments, yet no deliver and placement method exists for efficient engineering utilization of these amendments. Waterjet placement can be applied for a suite of amendments targeting nearly all common sediment contaminants, specifically PCBs, PAHs and redox sensitive metals. RESEARCH DESIGN: Research design is will focus on optimizing design and operational parameters at escalating scales to meet the goal listed above and will result in a field-ready technology within the project period. The assembled team has extensive experience in scale-up of basic science discovery to very large, field-scale projects and technology development and even utilization. This range of experiences and expertise is unique and will certainly help in making success in this research endeavor highly likely. RELEVANCE TO PUBLIC HEALTH: Contaminated sediments are a substantial threat to human health, tainting the base layers of the food chain. Remediation expenditures are expected to reach well into the billions, yet only three options exist. None of which truly remediate the sediment. By increasing the efficiency and lowering the cost of remediating these sites, even more sites can be truly remediated.