气候驱动的源水增加自然有机物质:对饮用水处理可持续性的影响
Ryan Swinamer1, Lindsay E Anderson1, Dave Redden1
1Centre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, Nova Scotia B3H 4R2, Canada.
Environmental science & technology
|June 26, 2024
概括
极端天气事件显著增加了饮用水中的天然有机物质 (NOM),需要更高的剂量和增加二氧化碳排放. 为了应对气候变化影响,迫切需要针对NOM清除的可持续替代方案.
科学领域:
- 环境科学 环境科学
- 水处理技术 水处理技术
- 气候变化研究 气候变化研究
背景情况:
- 加拿大大西洋地区的饮用水设施在过去二十年中面临着自然有机物 (NOM) 和棕色化的上升.
- 气候变化与NOM度的逐渐增加和水的变色有关.
研究的目的:
- 评估最近极端天气事件对急性NOM增加的影响.
- 评估对饮用水处理工艺和运营调整的影响.
- 分析NOM的长期趋势,治疗反应和相关的环境影响.
主要方法:
- 对1999-2023年气候,水质和运营数据的分析.
- 量化NOM度变化 (颜色) 和处理化学物质剂量 ().
- 估计与化学品使用相关的同等二氧化碳排放.
主要成果:
- 2023年,一个干燥的春天接着一个温暖潮湿的夏天,导致NOM (颜色) 增加了67%以上.
- 剂量在2023年与2022年相比几乎翻了一番,以管理NOM;自工厂投入使用以来,整体剂量增加了4.1-8.3倍.
- 消毒副产品暂时上,但仍在合规范围内;使用的二氧化碳排放增加了3至7倍.
结论:
- 极端天气事件加剧了NOM在饮用水处理方面的挑战.
- 越来越多地依赖于诸如等化学处理,有助于温室气体排放.
- 转向可持续的NOM清除方法和强大的气候适应策略对于水务部门至关重要.
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