气候变化和未来的水需求:对水分系统中和三甲管理的影响
Faezeh Absalan1, Fatemeh Hatam1, Michèle Prévost1
1Drinking Water Chair, Department of Civil, Geological, and Mining Engineering, Polytechnique Montréal, CP 6079, Succ. Centre-Ville, Montreal, QC H3C 3A7, Canada.
气候变化影响饮用水质量. 温度和有机物质的上升,加上需求的减少,可能会损害含量,并在配送系统中增加三甲 (THM). 公用事业公司必须适应除了增加化之外的策略来管理风险.
科学领域:
- 环境工程 环境工程
- 水质管理水质管理
- 公共卫生 公共卫生
背景情况:
- 全球气候变化和节水政策正在改变源水和处理水的特性,包括温度和自然有机物质.
- 由于需求减少,饮用水配送系统 (DWDS) 的停水时间增加可能会加剧水质问题.
- 现有的水质管理策略可能不足以应对气候变化和不断变化的用水模式的综合影响.
研究的目的:
- 研究溶解有机碳 (DOC) 的增加,温度和减少水需求对和三甲 (THM) 动态的单独和综合影响.
- 开发和应用预测模型,在各种气候变化和需求场景下评估水质可靠性.
- 在DWDS中确定针对性干预和气候适应战略的关键门和脆弱区域.
主要方法:
- 使用实验室实验对和THM预测模型进行校准.
- 在EPANET-MATLAB工具包中实施校准模型,以模拟不同环境条件下的DWDS性能.
- 使用可靠性指数和低可靠性区域的地理划分,量化低残留和高THM周期.
主要成果:
- 减少的水需求显著影响的可用性,而它对THM形成的影响不那么明显.
- 的可靠性随着温度和DOC的增加,以及水需求的减少而逐渐下降.
- 在达到关键值 (例如温度>25°C或DOC>2.2 mg/L) 之前,THM可靠性保持稳定,此后整个网络的超值会突然发生.
结论:
- 由于THM形成的增加,不建议在未来高DOC和温度条件下增加剂量.
- 该研究为水利公司提供了一个框架,以评估干预的有效性,确定特定地点的可靠性门,并将气候适应纳入水安全管理.
- 积极的管理策略对于在气候变化和不断变化的水资源管理实践面前保持安全的饮用水质量至关重要.
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