离子交换控制饮用水处理中的三卤甲烷——加拿大安大略省Rainy River市城市水处理案例研究

IF 2.4 4区 环境科学与生态学 Q2 WATER RESOURCES
K. Brezinski, B. Gorczyca, Mehrnaz Sadrnourmohammadi
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引用次数: 6

摘要

本研究的目的是研究离子交换(IX)控制三卤甲烷(THM)形成的能力,并作为加拿大安大略省雷尼河传统处理厂的潜在处理添加(升级)。主要目标是研究总有机碳(TOC)和三卤甲烷形成潜力(THMFP)的去除率作为树脂剂量的函数;并注意到与当前常规工厂操作相比的相对改进。IX树脂(DOWEX TAN-1、Purolite 502P和860以及Amberlite PWA9)从传统过滤水中去除了68–72%的TOC和30–40%的THMFP。采用固定床流化床接触器研究了DOWEX TAN-1树脂的TOC/THMFP穿透。TOC和THMFP的床体积分别为1275和1075,树脂完全穿透。1000个处理床体积后的突破性产量被认为是THMFP水平达到加拿大监管机构要求的0.1 mg L–1水质标准阈值的点。TAN-1(3.02 mg mL–1)和PWA9(2.03 mg mL–2)树脂的交换容量较高,这两种树脂都含有苯乙烯主链。台架试验的结果在Rainy River水处理厂的全面升级中得到了成功的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ion-exchange for trihalomethane control in potable water treatment – a municipal water treatment case study in Rainy River, Ontario, Canada
The objectives of this study were to investigate the ability for ion-exchange (IX) to control trihalomethane (THM) formation, and to act as a potential treatment addition (upgrade) to a conventional treatment plant in Rainy River Ontario, Canada. The primary goal was to investigate the total organic carbon (TOC) and trihalomethane formation potential (THMFP) removal as a function of resin dose; and note the relative improvements over current conventional plant operation. IX resin (DOWEX TAN-1, Purolite 502P and 860, and Amberlite PWA9) removed 68–72% of TOC and 30–40% THMFP from the conventionally filtered water. Fixed-bed fluidized bed contactor was used to investigate the TOC/THMFP breakthrough for the DOWEX TAN-1 resin. Complete resin breakthrough occurred followed by 1,275 and 1,075 bed volumes for TOC and THMFP, respectively. Breakthrough output following 1,000 treated bed volumes was noted as the point at which THMFP levels reach the 0.1 mg L–1 water quality standard threshold required by Canadian regulators. High exchange capacities were recorded for the TAN-1 (3.02 mg mL–1) and PWA9 (2.03 mg mL–1) resins – both of which contain styrene backbones. The results produced in the bench-scale experiments were used very successfully in a full-scale upgrade of the Rainy River water treatment plant.
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CiteScore
4.50
自引率
8.70%
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