Waste Residuals & Distribution System Technology Advancements for Ion Exchange Processes in Drinking Water Treatment

在常规过滤系统中，混凝仍然是去除天然有机物（NOM）以减少水处理中消毒副产物（DBP）形成的最常用工艺。然而，当在冷水条件下操作时，这一过程已被证明有局限性，并导致产生大量的废物残余固体（即污泥），需要进一步处理和最终处置。与混凝工艺相比，阴离子交换树脂（AER）的IX技术在最近的实验和中试规模研究中显示出最佳的NOM去除能力。然而，我们对AER处理IX将如何潜在地影响氯和/或紫外线对成品水的消毒效果，以及分配系统中的腐蚀控制策略的理解有限。IX树脂再生时产生的废盐水残留物的管理和处置也需要进行先进的研究，以开发更具可持续性的替代工艺设计解决方案。这项研究项目的总目标将是调查IX技术在水质方面的应用，以及与饮用水处理中的主要处理列车、分配系统和废物残留物管理业务有关的设计选择。该项目将汇集来自学术界、市政和私营部门的专业人士（咨询工程师、技术设计师和制造终端用户），通过为期三年的研究计划，重点关注离子交换技术，为饮用水处理行业提供直接利益。达尔豪斯大学的研究人员通过NSERC Engage Grant项目与私营部门建立了新的合作伙伴关系，并通过达尔豪斯大学的NSERC CREATE Grant项目（STEWARD）增加了研究能力，极大地补充了该项目拟议的研究团队和HQP发展潜力。总体而言，本研究将侧重于开发新的设计指南，采用先进的水处理技术，以实现市政饮用水供应和食品饮料制造部门的高质量水目标。

Coagulation in conventional filtration systems remains the most commonly used process for the removal of natural organic matter (NOM) to reduce disinfection by-product (DBP) formation in water treatment. However, this process has been shown to have limitations when operating in cold water conditions, and results in the generation of large volumes of waste residual solids (i.e., sludge), which require further processing and ultimate disposal. IX technology with anionic exchange resin (AER) has been shown in recent bench- and pilot-scale studies to present optimal NOM removal capacity when compared to coagulation processes. However, our understanding of how IX treatment with AER will potentially impact disinfection efficacy of the finished water with chlorine and/or UV, and corrosion control strategies in the distribution system is limited. The management and disposal of the waste brine residuals produced when IX resins are regenerated also presents an area that requires advanced research to develop alternative process design solutions that are more sustainable. The overall goal of this research project will be to investigate the application of IX technology in terms of water quality and design options related to the main treatment train, distribution system and waste residuals management operations in drinking water treatment. The project will bring together professionals from academia, municipal and private sectors (consulting engineers, technology designers and manufacturing end-users) to provide direct benefits to the drinking water treatment industry through a three-year research program focused on ion exchange technology. New partnerships between researchers at Dalhousie University and the private sector through the NSERC Engage Grant program, and increased research capacity through the NSERC CREATE Grant program (STEWARD) at Dalhousie have greatly complemented the proposed research team and HQP development potential for this project. Overall, this study will focus on developing new design guidelines with advanced water treatment technologies to achieve high quality water targets for both municipal potable water supplies and the food and beverage manufacturing sector.