20180722智慧水务资料包11国外案例英国AnglianWater20140129长期合

WaterSecuritySeminarSeries-UEASteveKayeHeadofInnovation29thJan2014Agenda/Contents•AnglianWater–BackgroundandAspirations•ApproachestoInnovation&Collaboration•SomeCaseStudies•The@onealliance•SummaryHistoryofwatersupplyinEngland&Wales•1848-PublicHealthActfollowingcholeraepidemics-provisionofgoodwaterandseweragebecomesmissionofreformers.•1915-2,160waterundertakings(including786localauthorities)•1945-WaterActencouragedamalgamationsofwatercompaniesandboards•1963-100waterboards,50localauthorities,29privatewaterCo.s•1973-WaterActcreated10WaterAuthoritiestoreplacewaterboardsandlocalauthorities-Authoritiesbasedonrivercatchments,responsiblefor:–waterconservation,–pollutioncontrol–landdrainageandflooddefence–fisheries–watersupplyandsewerage•1989-CreationofNRA(EnvironmentAgency),Ofwat,10privatewaterandseweragecompaniesGlobalRiskLandscape2013GlobalTrendsGlobalRiskLandscape2013GlobalTrendsBackgroundtoAnglianWater•27,500km2-largestWASC•3,500employees•flatterrain-slowrunningrivers•agriculturalpollution•fastgrowingregion•mainlyrural•driestregioninUK•LongcoastlineOurRegulatorsAnglianWaterBusinessgoals:•These10ambitiousgoalsarederivedfromourlong-termkeystrategicpriorities,andwerelaunchedinourLoveEveryDropManifestoinOctober2010.Keystrategicpriorities2010–2035:•Increasetheresilienceofourwaterandwastewaterservices.•Secureandconservewaterresources.•Planandinvestforgrowthinourregion.•Improvetheenvironmentinourregion.•Mitigateandadapttoclimatechangeimpacts.•Improveourefficiencyandflexibility.•Meettheneedsofourcustomersandkeepbillsatcurrentaffordability.Ourlong-termgoalsInnovationGoalsAnglianRiverBasinDistrictSignificantwatermanagementissues•SomeoftheRiverBasinChallenges:-•Abstraction&otherflowregulation•Nitrate•Pesticides•Phosphorus•Sediment•Othereffluentqualityparameters(BOD,SS,NH4,Metalsetc…)•Urbanandtransportpollution25to50yearstrategicwaterresourcesplanPressuresofclimatechange,populationgrowth,environmentalpressuresandabstractionreformwilldrivefuturestrategies.Rawwatertransfersandstoragewillformakeyelementofthestrategy.Theprofileandimportanceofdemandmanagementwillincreaseasnewresourcesbecomeexpensivetodevelop.Strategiescouldbeextendedtoincludeagricultureandindustrytoformamultisectorplanningapproach.WaterResourcesEastAnglia(WREA)Groupestablished.25Yearsupply-demandstrategy•Demandmanagement:leakagecontrol,pressuremanagement,meteringandwaterefficiency•Waterre-use(greywater,blackwater,rainwater,effluent)•Capturingandstoringsurpluswinterflows–Winterstoragereservoirs–Managedaquiferrecharge•Intercompanytransfers(trading)•CanaltransfersWaterresourcesmanagement–demandside2historicalgrowthindemandWaterSupplied1963-20050200400600800100012001400160019631965196719691971197319751977197919811983198519871989199119931995199719992001200320052007QuantityintoSupplyMl/dWaterSuppliedincludesNonPotableandImportsbutexcludesExportsUnmanagedDemandManagedDemandGrafham1963Rutland1978Alton1983Metering/LeakageControl/WaterEfficiency?•LowestleakagerateintheUKwaterindustry•Leakageratereducedbyapprox10%in2011/2012•Highmeterpenetration–70%ofcustomersmeasured•Stabledemandsince2000•Effectivewaterefficiencyprogramme•Drop20campaignimplementedin2012toreducecustomerWaterSourcesWaterSources•About5%ofthewatersuppliedisdirectlyabstractedfromrivers,withalmosthalfofthewatersuppliedfromourlargeimpoundedreservoirs.•Manyofthesereservoirs,forexampleGrafhamWaterandRutlandWater,arebestknownfortheiramenityandnatureconservationuse.•Theremainderofourwaterisabstractedfromsevenmajorundergroundsources(aquifers)viaover450boreholes.•Themajoraquifersarechalk,limestoneandsandstone.RawWaterQuality•Theprocessesusedtotreatthewaterbeforeitissuppliedtocustomersvarydependingonthequalityoftherawwater.•Anumberofourgroundwatersourcesonlyrequireasmalldoseofchlorine.•Surfacewaterspassthroughacomplexsequenceoftreatmentprocesses.•Groundwatersareclassifiedbycatchment,typeandhistoricaldatatodeterminetreatment.Whatdoweneedtoremovefromtherawwater?RawWaterQualityGroundwaters•Pathogens•Iron•Manganese•Nitrate•Sulphides•Heavymetals•Pesticides•Ammonia•AddDissolvedoxygenSurfaceWaters•Pathogens•Pesticides•Suspendedsolids•Algae•Ammonia•Tasteandodour•Colour•Zooplankton•Nitrate•OthertraceorganicsGroundwatervs.SurfaceWaterComplexRelativelysimpleTreatmentWiderangeofchemicalconstituentsMaycontainironandmanganese,sulphidesnitrates,pesticidesChemicalLowerqualityTypicallyveryhighqualityMicrobiological13129No.ofsites50%50%RawwaterresourceSurfacewaterGroundwaterComplexRelativelysimpleTreatmentWiderangeofchemicalconstituentsMaycontainironandmanganese,sulphidesnitrates,pesticidesChemicalLowerqualityTypicallyveryhighqualityMicrobiological13129No.ofsites50%50%RawwaterresourceSurfacewaterGroundwaterWastewaterTreatmentSettlementTank(SandFilter)SettlementTankBiosolidstreatmentScreensTricklingFilterActivatedSludgeORSeweragenetworkRiverorSeaFoodwasteManures/slurriesCropresidueSewagesludgeVehiclefuelBiogas(CH4+CO2)CombinedHeat&PowerBiofertiliserforagricultureBiomethanetogridGreenwasteDigestionvessel(35oC)CompostingLandrestorationWas