摘要
滨海地区河流源短流急、地表水资源开发难度大,将再生水、淡化海水等非常规水纳入滨海城市水资源统一配置是缓解水资源短缺矛盾的有效途径。考虑地表水等常规水资源丰枯不确定性,科学确定非常规水源工程建设规模,是实现常规与非常规水资源统一配置的关键。以威海市区为例,建立了考虑水库来水不确定性的海水淡化与再生水厂建设规模优选模型,采用多目标遗传算法进行求解,以可靠性、弹性和脆弱性为指标,评价整个供水系统的性能,并进行多方案比较。结果表明:2030规划水平年威海市区适宜的再生水和海水淡化规模分别为23和15万m^(3)/d;在此规模下,威海市区的供水保证率可由63.8%提高到95.2%,多年平均供水成本为6.6亿元。研究结果可为区域供水规划提供决策参考。
The utilization of surface water resources is difficult in coastal areas due to short flow path and sharp gradient of river channel.Incorporating unconventional water resources such as reclaimed water and desalinated seawater into unified urban water systems in coastal cities is an effective way to alleviate water shortage.A key point to realize the unified allocation of conventional and unconventional water resources is to scientifically determine the construction scales of unconventional water sources considering uncertainties of conventional water resources.In this paper,an optimal model for determining the construction scales of desalinated seawater and reclaimed water considering inflow uncertainties is established through a case study in Weihai City.The non-dominated sorting genetic algorithm-Ⅱis adopted to solve the model.Three indexes(reliability,resilience and vulnerability)are used to measure the performance of the whole water supply system and further compare results with the current basic scheme.The results indicate that at the planning level of 2030,the suitable construction scales of reclaimed water and desalinated seawater in Weihai urban area are 230 thousand m^(3)/d and 150 thousand m3/d respectively.Based on these scales,the guarantee rate of urban water supply in Weihai urban area increases from 63.8%to 95.2%,and the average annual water supply cost is 660 million yuan.The results can provide decision-making reference for regional water supply planning.
作者
谈丽婷
王宗志
叶爱玲
刘克琳
TAN Liting;WANG Zongzhi;YE Ailing;LIU Kelin(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China)
出处
《水利水运工程学报》
CSCD
北大核心
2021年第5期48-57,共10页
Hydro-Science and Engineering
基金
国家重点研发计划资助项目(2018YFC0408005)
水利部技术示范项目(SF-201803)。
关键词
海水淡化
再生水
工程规模
多水源配置
来水不确定性
多目标优化
desalinated seawater
reclaimed water
project size
multi-source water allocation
inflow uncertainty
multi objective optimization
作者简介
谈丽婷(1996-),女,上海人,硕士研究生,主要从事水资源复杂系统运行与管理研究。E-mail:18930320132@163.com;通信作者:王宗志,E-mail:zzwang@nhri.cn。
