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Re-evaluating secondary disinfectants as sentinels of contamination and using a systems vulnerability model.

机译:重新评估次要消毒剂是否为污染的标志,并使用系统漏洞模型。

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摘要

To build a framework in which secondary disinfectants can be quantitatively evaluated, three tasks were performed: (1) A sampling campaign was conducted at a community using an alternative secondary disinfectant (HuwaSan peroxide) to evaluate various water quality parameters; (2) bench-scale experiments examined the efficacy of different disinfectants as sentinels of contamination; and (3) a systems vulnerability assessment was performed (EPANET-MSX). The results show that: (1) HuwaSan, can limit DBP formation while maintaining acceptable water quality in terms of the parameters measured; (2) chlorine was observed to be the most appropriate sentinel of intrusion under the tested conditions; and (3) under modeled conditions, E. coli propagation was controlled by all tested disinfectants. For Giardia intrusions, Cl2, ClO2, and HSP achieved 3-log inactivation between 30-150 minutes, although an assumed inactivation rate for HSP was used. The same inactivation required chloramines and H2O2 between 330-1180 and 170-910 minutes, respectively.
机译:为了建立一个可以对二级消毒剂进行定量评估的框架,执行了三个任务:(1)在社区中使用替代性二级消毒剂(HuwaSan过氧化物)进行了抽样运动,以评估各种水质参数; (2)实验室规模试验检验了不同消毒剂作为污染定点的功效; (3)进行了系统漏洞评估(EPANET-MSX)。结果表明:(1)HuwaSan可以限制DBP的形成,同时在所测参数方面保持可接受的水质; (2)在测试条件下,氯被认为是最合适的入侵前哨; (3)在模拟条件下,所有测试的消毒剂均控制大肠杆菌的繁殖。对于贾第鞭毛虫入侵,Cl2,ClO2和HSP在30-150分钟之间达到了3-log灭活,尽管使用了假设的HSP灭活率。相同的灭活分别需要330-1180和170-910分钟之间的氯胺和H2O2。

著录项

  • 作者

    Keung, Chris.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Civil engineering.;Environmental engineering.;Water resources management.
  • 学位 M.A.S.
  • 年度 2015
  • 页码 264 p.
  • 总页数 264
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:52:42

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