THM Reduction Feasibility Study for the Water Treatment Plant at the Town of Rainy River- Ion Exchange Process with Regeneration

雨河镇水处理厂THM降低可行性研究-离子交换再生工艺

• 批准号: 482788-2015
• 负责人: Gorczyca, Beata
• 金额: $ 0.63万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=582968
• 关键词: THM; Reduction; Feasibility; Study; Water

In Manitoba, nearly 70% of potable water treatment plants exceed the standard for the potentially carcinogenic chlorine disinfection by-products - trihalomethanes (THMs). THMs are formed when chlorine reacts with water Dissolved Organic Carbon (DOC), therefore, quality and quantity of water DOC will affect how much THMs are formed. Elevated level of THMs is a major concern for the Town of Rainy River (Ontario). The water treatment plant in Rainy River recorded elevated THMs levels in the distribution system often exceed 100 ppb with a maximum reading of 233.3 ppb in July 2010. The current Guideline for Canadian Drinking Water Quality (GCDWQ) has a THM regulation of 100 ppb which is expected to be lowered to 80 ppb in the near future following the United States Environmental Protection Agency (USEPA). DOC is typically removed by chemical coagulation, but, the efficiency of this process is quite low. In this project we aim to investigate the removal of DOC from the Rainy River using an Ion Exchange Technology. This is a relatively new technology and there are no publications describing effectiveness of this technology on the surface waters with extremely high DOC typical for the Canadian Prairie and the Shield. Two anion exchange resins will be tested; both resins are strong base anion exchange resins that can be used to remove organic acidic ions from water. The laboratory test conditions producing treated water with the lowest concentration of chlorine disinfection by-products (THMs) will be recommended to KGS for further testing in the pilot scale studies. This research will study the possible methods for improvement of removal of water DOC at the existing water treatment process at the Town of Rainy river. This study will provide KGS with the strategies to optimize the operations of the existing water plants, and allow for avoidance of costly plant upgrades which provide significant savings to the community. Many communities supplied with high DOC waters, common in the Canadian Prairies and the Shield, will benefit from this study.

在马尼托巴省，近 70% 的饮用水处理厂的潜在致癌物质超标 氯消毒副产物 - 三卤甲烷 (THM)。当氯与下列物质反应时会形成 THM： 水中溶解有机碳（DOC），因此，水的质量和数量会影响DOC的多少 THM 形成。 THM 水平升高是雷尼河镇（安大略省）的一个主要问题。这 Rainy River 水处理厂记录的配水系统中 THM 水平升高，经常超过 100 ppb，2010 年 7 月最大读数为 233.3 ppb。现行加拿大饮酒指南 水质 (GCDWQ) 的 THM 规定为 100 ppb，预计在 2019 年将降低至 80 ppb 不久的将来继美国环境保护署（USEPA）之后。 DOC通常通过化学混凝去除，但是该过程的效率相当低。在这个 我们的项目旨在研究使用离子交换技术从雷尼河中去除 DOC。 这是一项相对较新的技术，目前还没有出版物描述该技术的有效性 地表水具有极高的 DOC，这是加拿大大草原和地盾的典型特征。二负离子 将测试交换树脂；这两种树脂都是强碱性阴离子交换树脂，可用于去除 水中的有机酸离子。产生最低处理水的实验室测试条件 氯消毒副产物（THM）的浓度将建议KGS进行进一步测试 中试规模研究。 本研究将研究改善现有水体 DOC 去除率的可能方法 雷尼河镇的处理过程。这项研究将为 KGS 提供优化策略 现有水厂的运营，并可以避免昂贵的工厂升级，从而提供 为社区节省大量资金。许多社区都供应高 DOC 水域，这在 加拿大大草原和地盾地区将从这项研究中受益。