南水北调中线输水水质水量变化特征及城市供水应对措施建议
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2020-03-17 10:17:34
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城镇给排水南水北调中线输水水质水量变化特征及城市供水应对措施建议林明利张全李宗来张桂花张志果杨志勇司绍林。牛红展孙建军范海龙顾军农(1中国城市规划设计研究院,北京100044~2中国水利水电科学研究院,北京100038;3河北省城乡规划设计研究院,石家庄050021;4保定供水总公司,保定071051;5北京市自来水集团有限责任公司,北京100192)摘要南水北调中线一期工程通水一年来,工程运行平稳,在提高受水区城市供水保证率,提升居民饮用水品质,改善生态环境等方面发挥了积极作用。在总结中线工程运行一年来实际经验的基础上,研究了中线工程来水水质和水量特征。研究认为,中线来水水质总体优良,特别是浊度低、硬度低,但存在高温高藻和低温低浊两个特殊水质时期,对水厂正常运行产生不利影响;中线来水总量富裕,特枯年份年内分配过程不均,存在工程能力富余和特枯来水时期缺水的问题。针对中线工程来水特征和问题,提出了有关保障城市供水安全和充分发挥工程效益的建议措施。关键词南水北调中线一期工程水质水量明渠高藻低浊供水安全CharacteristicsofthevarianceofthewaterqualityandquantityinthemiddlerouteofSouth—to-NorthWaterDiversionProjectandcorrespondingmeasuresforurbanwatersupplyLinMingli,ZhangQuan,LiZonglai,ZhangGuihua,ZhangZhiguo,YangZhiyong,SiShaolin。,NiuHongzhan,SunJianjun,FanHailong,GuJunnong(1.ChinaAcademyofUrbanPlanning&Design,Beijing100044,China;2.ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing100038,China;3.HebeiUrbanandRualPlanningInstitute,Shijiazhuang050021;4.BaodingWaterSupplyGroupCompany,Baoding071051;5.BeijingWaterworksGroupCo.,Ltd.,Beijing100192,China)Abstract:Themiddlerouteprojectofsouth—to—northwaterdiversion,whichhasbeenregularlyrunningformorethanoneyear,provideslotsofbenefitstothenortherncities,especiallyinimpro—vingurbanwatersupplysecurityandwaterquality,andenhancingecologicalenvironment.Onabasisofengineeringoperationandwaterqualitymonitoring,qualityandvolumetriccharacteristicsofwaterprovidedbythemiddlerouteprojectwerediscussedinthiswork.Generally,thequalityofthetransferredwaterwasquitegoodwithlowturbidityandlowmineralcontent.However,algaebloomandlOWturbidityphenomenonwouldoccurredtothetransferredwaterunderhighandex—tremelylowtemperature,respectively,leadingtotheabnormalworkingofwaterplants.Thetotalwaterquantityoftheprojectwasabundant,buttheannualdistributionoftheprojectflowwasune—yeninspecialdryyear.Therefore,excesscapacityofwatertransferandwatershortageinspecial国家水体污染控制与治理科技重大专项(2012ZX07404—001,2014ZX07510一O01)。给水排水Vo1.42No.420169京团城湖的水流时间约15天。另外,黄河以北中线工程还存在冬季冰期输水的情况。2中线输水水质特征2.1水质总体情况以南水北调中线北方某受水城市水厂为例,分析该水厂所接
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