城市污水处理技术ppt模版课件

《城市污水处理技术ppt模版课件》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、AnIntroductiontoUrbanWaterandWastewaterTreatmentTechnologiesProf.X.C.WangXi’anUniv.ofArchitecture&TechnologyContents1.ContaminantsinWater2.ContaminantSourcesandTreatability3.BestAvailableTechnologies4.TrendofDevelopment21.ContaminantsinWater1.1TargetofWaterQualityControlWastewate

2、rDischargeRegulationKeypoint:Protectionofhumanhealth31.2CapacityofWaterEnvironmentAsimplecalculationCi:ConcentrationofcontaminantiMi:MassofcontaminantiinwaterV:WatervolumeMi0:MassofcontaminantireceivedMir:Massofcontaminantiassimilated(removed)bythewaterbodyitself(selfpurification

3、)41.2CapacityofWaterEnvironmentWaterqualitycriteriaThisisequivalenttoMirisameasureoftheenvironmentalcapacityCis:StandardforcontaminantiMis:Maximumpermissiblemassofcontaminantiinwater51.3WaterEnvironmentalStandardAmericanstandard:CleanWaterAct(CWA)AmbientWaterQualityCriteriaforthe

4、ProtectionofHumanHealthAquaticLifeCriteriaNutrientCriteria61.3WaterEnvironmentalStandardAmericanstandard:CleanWaterAct(CWA)TheNRWQC2002includesCriteriaforprioritytoxicpollutants:120items(15forinorganic,105fororganicpollutants)Criteriafornonprioritypollutants:45itemsCriteriafororg

5、anoleptic(tasteandodor)effects:23itemsDownloadableathttp://www.epa.gov/waterscience/criteria/wqcriteria.html71.3WaterEnvironmentalStandardChinesestandard:EnvironmentalQualityStandardsforSurfaceWater(GB3838-2002)Fundamentalparameters(地表水环境质量标准基本项目标准限值):24itemsSupplementalparameter

6、sforsourcewaterforcommunitywatersupply(集中式生活饮用水地表水源地补充项目标准限值):5itemsSpecificparametersforsourcewaterforcommunitywatersupply(集中式生活饮用水地表水源地特定项目标准限值):80items8表1地表水环境质量标准基本项目标准限值(单位:mg/L)9表1地表水环境质量标准基本项目标准限值(单位:mg/L)10表1地表水环境质量标准基本项目标准限值(单位:mg/L)11表2集中式生活饮用水地表水源地补充项目标准限值(单位：mg/L)12表3

7、集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L)13表3集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L)14表3集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L)151.4PollutantsofPublicConcernIndicativeparametersSuspendedsolids:SSDissolvedsolids:TDS(salinity)Organicsubstances:COD,BOD,TOC,UV…Dissolvedoxygen:DOAcidity:pHNutrientsNitrogen:TN,NH3

8、-N,NO3-N,NO2-N…Phosphorous:TP,Portho,Ppo