Integration and modification of anionic exchange process for mine water treatment in cold climates

隶属于阿比提比·塔姆斯卡米格学院的雷姆斯工业技术中心（CTRI）与Aldex化学公司合作，对创新的阴离子交换树脂进行改性和整合，有可能在低温下处理矿井废水中有问题的阴离子污染（例如硫酸盐）。这个拟议的项目被视为由NSERC（536694-18）资助的Engage赠款的连续性。研究结果表明，阴离子交换树脂是矿山废水脱除硫酸盐的一种可行的处理方法，并证明了树脂在低温、低pH条件下的性能。然而，再生过程和再生解决方案的管理是该项目中最具挑战性的问题。提出了再生工艺的改进以及硫氰酸盐、硝酸盐等竞争阴离子的预处理方法。在此背景下，ARD II级项目旨在回应上述提出的挑战。该项目分为三个不同的部分：第一部分将涉及运行实验，以确定有问题的阴离子，以优化再生过程和再生溶液的管理，第2部分涵盖了实验室规模的原型过滤和柱装置的修改和安装，以类似于工业过程。在这一阶段，生物阴离子预处理工艺可与柱相结合。第二阶段的结果将在第3部分中用于全面运行的阴离子交换过程的经济评估。该项目为与Aldex的长期合作奠定了基础，并确保了他们作为矿山市场新技术提供商的地位。该项目对魁北克和加拿大处理矿山废水的Aldex技术的验证和随后的商业化至关重要，同时将为CTRI提供一个加强这一研究领域专业知识的机会。CTRI拥有成功完成该项目的专业知识和物质资源。

The Centre Technologique des Résidus Industriels (CTRI) affiliated to the College of Abitibi Témiscamingue collaborates with Aldex Chemicals inc. to modify and integrate innovative anionic exchange resin with a potential to treat problematic anion contamination (e.g. sulfate) in mine effluents in cold temperature. This proposed project is seen as a continuity for the Engage Grants funded by NSERC (536694-18). The results of the engage project obviously showed that anion exchange resin was a viable treatment option for mine effluent for the removal of sulfate and the performance of resin at lower temperature and pH was proved. However, the regeneration process and the management of regeneration solution were the most challenging issues in this project. Modification of regeneration procedure as well as the pre-treatment of competitive anions such as thiocyanate, nitrates, etc. are proposed. In this context, this ARD level II project aims to reply to raised challenges discussed above. This proposed project is divided into three distinct parts: Part 1 will involve running experiments to identify the problematic anions in order to optimize the regeneration process and the management of the regeneration solution, Part 2 covers the modification, and installation of a prototype filtration and column unit at lab scale to resemble the industrial process. In this phase biological anions pre-treatment process could be joint with column. The results of the second phase will be used in part 3 for economical assessment of fully operational anion exchange process. This project builds a foundation for long-term collaboration with Aldex and secure their position as the provider of new technologies in the mine marketplace. The project is critical to the validation and subsequent commercialization of Aldex technology for treating mine effluent in Quebec and Canada and will, at the same time, offers to CTRI an opportunity to enhance expertise in this research field. CTRI has the expertise and material resources to successfully accomplish this project.