基于水量水质双控的缺水地区水资源优化配置

开展水量水质双控约束下水资源优化配置研究是落实新时期"节水优先"方针、保障区域水安全和促进水资源可持续利用的基础支撑。针对我国北方地区资源型缺水、工程型缺水并存的问题,以山东省昌乐县为例,结合WEAP模型与传统水资源配置理论方法,根据区域用水需求与总量控制及水功能区限制纳污管控要求,统筹协调生活、生产、生态用水,建立基于水量水质双控的区域水资源优化配置模型,采用AHP法、熵权法、AHP-熵权耦合法计算不同情景方案的配置效益并优选配置方案。结果表明:规划水平年农业、城市供水保证率分别为50%、95%时,基于用水总量控制的跨流域调水、强化行业节水和水污染治理以及加大再生水回用相结合的配置方案(B4方案)综合效益最大,各行业用水需求均能得到满足,GDP较现状水平年增加709.01亿元,再生水利用率提高至25%。

Optimal allocation of water resources in water2scarce areas based on dual control of water quantity and quality

The research on the optimal allocatio n o f water resources under the contr ol of w ater qualit y and quantity is the basic suppo rt fo r im plementing the po licy of "w ater saving prio rit y" in the new era, ensuring r egio na l w ater security and promo ting the sustainable ut ilization o f w ater r eso urces. Aiming the coex isting o f w ater shortages in bo th resources and eng ineering in No rth China, Chang le County w as t aken as a case study. The quantity / quality2dual2co ntr ol2based mo dels for o pt imal reg io nal al2 locatio n o f water resour ces w ere established by combining a WEAP model w ith conventio nal theor y and methods for allocatio n of wat er resources, accor ding to reg io nal water demand, t otal quantit y contro l, and po llut ion co nt rol requirements in wat er func2 tional zones, to co ordinate domestic, pr oduction, and ecolog ical water usag e. Imply ing AH P, entro py w eig ht method and AH P2 entr opy w eig ht co upling method, the allocatio n benefits o f plans under different contexts w ere examined, and the best allocatio n plan w as selected. Results show ed that in the futur e planning years, the g uaranteed rate of w ater supply w as 50% and 95% , re2 spect ively, for irrig ation and urban. The scenario B4 combining the w at er reso ur ce development based on contr olling t otal water co nsumpt ion, str eng thening water2saving practices in industries, water pollutio n contro l, and r eusing mo re reclaimed water, a2 chieved the g reatest compr ehensive benefits. Compared to the current year, the w ater demand o f all sectors cloud met the annual GDP incr eased by 701 901 billio n y uan and the utilizat ion rate o f the reclaimed w astew ater accounted fo r 25% .