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Anion Exchange Technology as a Method for Removing Organics From Drinking Water 阴离子交换技术去除饮用水中有机物
发布日期: 1999-01-01
本文讨论了普惠公司(P&W)处理设施使用阴离子交换去除色度、总有机碳(TOC)、三卤甲烷(THM)和卤乙酸(HAA)前体,以满足消毒剂/消毒副产品规则(D/DBP)和国家一级和二级饮用水法规(NP/SDWR)。第一阶段D/DBP规则调节非挥发性HAA和THM,使得P&W超氯化/曝气工艺不可行。仅使用氯胺作为消毒剂将降低TOC、THMs和HAAs,但成品水的颜色将增加到25至35个颜色单位(CU)。 P&W选择阴离子交换来解决DBP和颜色问题,因为它是符合联邦法规的最具成本效益且维护最少的方法。本文详细介绍了为P&W量身定制的设计考虑因素、启动程序和结果,结果表明,颜色始终被去除到5 CU以下,TOC水平始终降低了55%或更高。包括表格,数字。
This paper discusses the use of anion exchange by one treatment facility, Pratt & Whitney (P&W), to remove color, total organic carbon (TOC), and trihalomethane (THM) and haloacetic acid (HAA) precursors to meet the Disinfectants/Disinfection Byproduct Rule (D/DBP) and National Primary and Secondary Drinking Water Regulations (NP/SDWR). The Stage I D/DBP rule regulates non-volatile HAAs as well as THMs, rendering the P&W superchlorination/aeration process infeasible. Using only chloramines as the disinfectant would reduce TOC, THMs and HAAs, but the finished water color would increase to 25 to 35 color units (CU). P&W selected anion exchange to address both the DBP and color issue because it was the most cost effective and least maintenance-intensive means to meet federal regulations. This paper details design considerations tailored for P&W, start-up procedures, and results, which show that color was consistently removed to less than 5 CU and the TOC levels have consistently been reduced by 55 percent or greater. Includes table, figures.
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发布单位或类别: 美国-美国给水工程协会
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