多目标空间优化框架,用于确定现有城市非饮用水再利用的最佳分权程度:香港的案例研究
Yue Li1, Zhongming Lu1, Xiangru Zhang2
1Division of Environment and Sustainability, Hong Kong University of Science and Technology, Hong Kong, China.
Environmental science & technology
|November 4, 2024
概括
投资于非饮用水再利用 (NPWR) 工厂通过确定设施的理想数量和位置来优化城市水资源管理. 这种方法平衡了节水,能源使用和可持续城市规划成本.
科学领域:
- 环境工程 环境工程
- 城市规划 城市规划
- 水资源管理 水资源管理
背景情况:
- 循环城市水资源管理需要投资于非饮用水再利用 (NPWR).
- 目前的研究缺乏方法来确定NPWR工厂的最佳数量和容量,用于大规模的城市应用.
- 现有城市NPWR的去中心化策略需要强大的评估框架.
研究的目的:
- 开发一个空间优化框架,以确定NPWR在城市环境中的最佳分权程度.
- 评估淡水提取,电力消耗和NPWR工厂成本之间的权衡.
- 在水-能源-成本关联中提供NPWR战略的整体评估.
主要方法:
- 开发了一个空间优化框架,整合了城市区的集体决策.
- 为了优化NPWR植物的放置和容量,采用了修改后的遗传算法.
- 目标包括尽量减少淡水抽取,电力消耗和NPWR工厂成本.
主要成果:
- 优化产生了帕雷托最佳解决方案,建议一到八个NPWR工厂,香港最常见的是两到三个.
- 具有成本效益的解决方案确定了在Kowloon和香港岛的最佳工厂位置,这些地区的NPWR需求很高.
- 实施这些解决方案可以节省大量的淡水 (6%) 和海水 (29.4%),尽管电力消耗增加了20.7%.
结论:
- 空间优化框架有效地评估了NPWR在城市规模上的最佳分散程度.
- 研究结果为像香港这样的城市制定更节能的水资源管理策略提供了基准.
- 该研究强调了在规划可持续的城市用水再利用系统时,关键的水能成本关系.
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