Prevention and intervention strategies for the mitigation of fugitive dust emission from mining residues storage sites

矿渣贮存场扬尘减排防治策略

• 批准号: 543388-2019
• 负责人: Ayotte, Patrick
• 金额: $ 6.01万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699591
• 关键词: Prevention; intervention; strategies; mitigation; fugitive

The prediction, control and mitigation of fugitive dust emissions from mine tailing requires important resources and entails significant management costs. In boreal contexts, these issues become acute during Winter conditions where mineral dust scatters over the snowpack in neighboring urban communities. In this collaborative project with the Centre de Recherche et Développement Arvida (CRDA), Usine Vaudreuil and the Site de Disposition des Résidus de Bauxite (SDRB) of Rio Tinto - Aluminium (RTA), we build on preliminary exploratory investigations and prior development of appropriate tools and protocols for laboratory and field studies of the spectroscopic and remote sensing determination of humidity levels and drying kinetics of bauxite residues. Following a survey of historical records of the meteorological conditions that led to fugitive dust emissions, along with modeling of wind speed distributions and erosion rates spatial profiles obtained from LIDAR altimetry data of the disposal site topography, a network of autonomous sensors will be deployed at strategic locations of the SDRB. Web-based management tools and detailed risk assessment protocols will be elaborated based on laboratory and field investigations of the drying rates as a function of the most critical environmental parameters, along with their continuous in situ monitoring. Finally, liquid dust suppressant applications will be automated with, for ultimate objective, the total control of dust emissions from the SDRB. Improved dust suppression strategies will be developed and tailored to support mitigation efforts at RTA Vaudreuil plant thereby reducing the environmental impact and costs of bauxite residues management, improving social acceptance in a concerted effort to impact positively mining industries' right to operate. The deliverables of this project will also permit straightforward extensions to a broad array of industrial activities facing fugitive dust emissions challenges.

从我的尾巴中对逃亡的尘埃排放的预测，控制和缓解需要重要的资源，并需要大量的管理成本。在北方的情况下，在冬季条件下，这些问题变得敏锐，在冬季，矿物灰尘散布在邻近城市社区的积雪上。在与Recherche etdévelopmentArvida（CRDA），USINE VAUDREUIL和DESTOSITION DESOINTION DESRIESIDUS de Bauxite（SDRB）的合作项目中铝土矿的水平和干燥动力学保留。经过对导致逃避尘埃排放的气象条件的历史记录的调查，以及从激光雷达（Lidar）高度计数据的风速分布和侵蚀速率的建模，将在SDRB的战略位置部署自主传感器网络。基于Web的管理工具和详细的风险评估协议将根据对干燥速率的实验室和现场调查作为最关键的环境参数的函数，以及其持续的原位监控。最后，为了实现SDRB的尘埃排放，将自动化液态粉尘抑制剂的应用。将制定和量身定制改进的尘埃抑制策略，以支持RTA Vaudreuil工厂的缓解工作，从而减少铝土矿残留物管理的环境影响和成本，从而改善社会认可，从而在一致的努力中努力影响积极的采矿业运营权。该项目的可交付成果还将允许直接扩展到逃避尘埃排放挑战面临的一系列广泛的工业活动。