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ID:37678548
大小:518.17 KB
页数:7页
时间:2019-05-28
《面向城市水系环境需水的再生水空间配置——以深圳市宝安区为例》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、毛宁等面向城市水系环境需水的再生水空间配置——以深圳市宝安区为例面向城市水系环境需水的再生水空问配置以深圳市宝安区为例毛宁。秦华鹏。(1.北京大学环境科学与工程学院,北京100871;2.北京大学深圳研究生院,城市人居环境科学与技术重点实验室,广东深圳518055;3.深圳环境模拟与污染控制重点实验室,广东深圳518057)摘要以深圳市宝安区为例,探讨以再生水满足城市水系环境需水的方法。应用一维恒定与非恒定水质模型计算了4种补水水质方案下该区1O条主要河流的环境需水量,从水量平衡角度提出全区再生水BODs的平均值,并进一步分析了补
2、水水质与河流环境需水量的关系。结合该区水系与污水处理系统空间位置,提出3种再生水的空间配置方法。结果表明:茅洲河和观澜河的环境需水量较大,占全区河流环境需水总量的6O以上;全区再生水BODs平均值为6.0mg/I;在污染负荷不变的条件下,河流环境需水量随补水水质的线性提高呈近似指数型减少;3种再生水配置方法均可利用该区的再生水来满足河流环境需水量要求,优化配置结果可为污水处理厂设计提供参考。关键词环境需水城市水系再生水空间配置宝安区Spatialallocationofreclaimedwaterbasedontheenviron
3、mentalwaterdemandofurbanriversystem——acasestudyofBao’andistrict,ShenzhenMAONing~,QINHuapeng.(1.CollegeofEnvironmentalScienceandEngineering,PekingUniversity,Beijing100871;2.TheKeyLaboratoryforEnvironmentalandUrbanSciences,ShenzhenGradu—ateSchool,PekingUniversity,Shenzh
4、enGuangdong518055;3.ShenzhenKeyLaboratoryofEnvironmentalSimula—tionandPollutionControl,ShenzhenGuangdong518057)Abstract:TakingintoaccounttheheavypollutantloadandhugeenvironmentalwaterdemandofurbanriversysteminBao’andistrict,anapproachofusingthereclaimedwaterfromsewage
5、plantsascompensatoryenvironmen—talwaterofurbanriverswasanalyzed.Onedimensionsteadyandun—steadywaterqualitymodelswereemployedtocalculatetheenvironmentalwaterdemandoftenlocalriversunderfourreclaimedwatersupplyconditionsrespective—ly.Fromtherespectofkeepingthebalancebetw
6、eenriverenvironmentalwaterdemandandsupply,theaveragere—claimedwaterqualitywasputforward.Moreover,therelationshipbetweenenvironmentalwaterdemandandthere—claimedwaterqualitywasquantitativelyanalyzed.Furthermore,allocationofreclaimedwaterwasalsodiscussedonthebasisofthesp
7、atialdistributionofurbanriversandthesewageplantsplanning.Theresultsshowedthat,environ—menta1waterdemandofMaozhouandGuanlanRiverwasthemost,whichwastakingmorethan60ofthetotalen—vironmentalwaterdemandoflocalurbanrivers.Forthesakeofkeepingthebalancebetweenriverenvironment
8、alwa—terdemandandreclaimedwater,theaveragereclaimedwaterqualityshouldbeBOD5—6.0mg/I.Underthesamepol—lutantloadcondition,envi
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