lunch seminaron master thesisprojectsin drinkingwatersystems · lunch seminaron master...
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2017-10-12
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Lunch seminar on Master thesis projects in
Drinking water systems
12 October 2017 DRICKSThomas Pettersson
More information on: www.dricks.chalmers.se
DRICKS – from source to tap perspective
Master thesis seminar - Chalmers, 2011-11-21
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MastersthesisprojectsDRICKS2017-2018
1. Riskassessment/management2. Sourcewaters3. Treatment4. Distributionnetwork
AllmasterthesisprojectsarepresentedatDRICKSwebsite:http://www.chalmers.se/sv/centrum/dricks/utbildning/Sidor/Masters-thesis-projects.aspx
Evaluation of groundwater sources in the municipality of FalkenbergOccurrance, storage and planning
• The municipality of Falkenberg need more detailed knowledge about its groundwater resources and how to handle them in the strategic planning
• Aim• Assess the importance of groundwater within the water cycle in
selected parts of the municipality• Propose sites suitable for storage of groundwater• Propose sites for storage of water in wetlands• Provide useful decision support for strategic planning
• Data sources: drilled boreholes, groundwater levels, spring flow rates, etc.
• Performed in collaboration with researchers at Chalmers and the Geological Survey of Sweden as part of an ongoing research project.
• Contact• Andreas Lindhe ([email protected])• Lars Rosén ([email protected])• Lars-Ove Lång ([email protected])
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EconomicvaluationofecosystemservicesofLakeBolmen
– Overallaim:istoestimatetheeconomicvalueoftheLakeBolmen,includingalldifferentvariousecosystemservices,suchasdomesticwater(drinkingwater),irrigation,recreation,scenicvalues,maintenanceoffisheriesandbiodiversity,andecosystemfunction
– Keyaspects:– assessliteratureofvaluationofhealtheffects– usedifferenteconomiccostvaluationmodels:
– theoriesofproductionlosses,– willingness-to-paymodelsincludingtravelcostmodelsetc.
– Supervisors:ThomasPettersson([email protected]),LarsRosén([email protected]),SusanneIngemarsson(Bolmsöparish area)
Screeningofmicropollutants indrinkingwater
– Background:300milliontonsofsyntheticchemicalsareusedannuallyLargeamountsofchemicalscontinuouslyreachnaturalwaters,andcancontaminatedrinkingwatersources.Conventionaldrinkingwatertreatmentisineffectiveinremovingmicropollutants,withPBTproperties,i.e.,chemicalsthatarehighlypersistent(P),liabletobioaccumulate (B),andtoxic(T).
– Overallaim:Theaimsoftheprojectaretoi)applyscreeningmethodsusing(highresolution)massspectrometry,ii)seektoidentifyemergingmicropollutants inwaterorsediment,andiii)tracesourcesforofpollution.Inthisproject,thestudentshouldhavelaboratoryexperienceandbeinterestedinanalyticalchemistry.
– LocationoftheMasterthesisproject:DepartmentofAquaticSciencesandAssessment,SLU,Uppsala.
– Contact:LutzAhrens,SLU,[email protected],070-2972245KarinWiberg,SLU,[email protected],070-2341570
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RiverGötaÄlv:hydrodynamicmodelling ofcontaminant transport
Chemical contamination ofwater sources can poserisksforhumanhealth andtheaquaticenvironment.TheriverGötaälvisadrinking water sourcefor700000consumers inmunicipalities located along theriver,including thecityofGothenburg.Inaddition,there isalong-termambitiontoimprove thewater quality inthedownstream partoftheriverinordertoallow swimminginthecentralpartsofthecityofGothenburg.Ahydrodynamicmodel oftheriverwas previously developed andapplied tosimulate thefate andtransportoffaecal contamination.Inthis project,thetaskistoinvestigate thefate andtransportofchemical contaminants (e.g.heavy metals andpolycyclic aromatic hydrocarbons)intheriverbymeans ofhydrodynamic modelling.Qualifications:We are looking forastudentwith abackground incivilorenvironmental engineering,orequivalent.Itisofgreat value if you have some experience ofmodelling,inparticular theMIKEsuite (byDHI),andworking with GIS.Contact:MiaBondelind,[email protected] KarinBjörklund,[email protected]
Developkeyperformanceindicatorstodeterminethehydraulicperformanceofthedisinfectionbarrier
Thewatertreatmentplant(WTP)mustsupplytheconsumerswithsafedrinkingwaterdespiterapidlychangingrawwaterqualityorirregulardemandofwater.Thefailureofthedisinfectionstepmayhaveextensivehealthandeconomicconsequences.Aim:Theoverallaimofthisprojectistodevelopkeyperformanceindicatorstodeterminethehydraulicperformanceofthedisinfectionbarrier.Suggestedkeyperformanceindicatorsthatdeterminetheflowinthetankareforexamplethegeometryofthetank(e.g.thelengthtowidthratio),theuseofbafflesandtheirorientation,theinletandoutletconfiguration.Severalindexesfordescribingthehydraulicefficiencyareavailableandtheycoverphenomenasuchasshort-circuiting(e.g.t_10 or t_16/t_50),deadzones(stagnantwater)andmixing(t_10/t_90,MorillIndex t_90/t_10,σ^2).Howtobestevaluatethehydraulicperformanceisstilldebated.Usually,t_10isdifficulttodetermineandinsteadahydraulicfactort_10/Tcanbereadfromatable.Thehydraulicfactorrangesfrom0-1wheretheflowapproachesaplugflowforalargerhydraulicfactor.Ithasprovendifficulttochoosethecorrecthydraulicfactorthatwillrepresenttheflowinthetankinpractice.Ithasalsobeendemonstratedthatthefactorisinconclusivefordescribingthehydraulicefficiencyofthetank.Theuncertaintywhendeterminingthetimetposesaproblemwhencarryingoutariskassessment.Poorqualityofinputdatawilleventuallygivealargeuncertaintyintheoutputfortheriskassessment.TheprojectwillcoverAliteraturereviewtodefineavailableperformanceindicators.AsurveyamongchlorinationtanksinSweden.Atselectedwatertreatmentplants,carryouttracerstudiesanddeterminetheresidencecurvetoevaluatetheidentifiedperformanceindicators.Moreinformation:MiaBondelind,[email protected]
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BACfiltermodellingObjective:developasimplemodelforBACfiltersunderstrainedconditionforNordicwaterqualityMethod:
§ Literaturereview§ Identifystrainedconditions§ Sampling
ResearchQuestion:• Whichmodelsandsoftwareareavailable?• Whataretheadvantagesanddisadvantages?DevelopamodelthatcapturestheperformanceofBACfiltersunderstrainedconditionsatthewatertreatmentplant.
Supervisor:NashitaMoonaandMiaBondelind
Disinfectionbyproductformationpredictionunderstressfulconditions
Overallaim:todevelopamodelforDBPformationpredictionunderstressfulconditionsTheprojectincludesaliteraturereviewandidentificationofdiverseoperationalandwaterqualityparameterstodevelopamodelforDBPformationprediction
Supervisor:NashitaMoonaandMiaBondelind
TOCDOCUV254SUVApHTemperatureChlorinedoseReactiontimeofresidualClBromideion
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UV-doseandregrowthindrinkingwaterdisinfection• Heterotrophic bacteria use organic carbon forenergy andgrowth• UVdisinfection kills pathogens but:• Athigh UVdose,unreactive natural organic matter (NOM)can splitinto small,
labilemolecules that represent food forheterotrophic bacteria.
UV Food forbugs(AOC)
NOM
• Whatdoses are aconcern?Doesitvary fordifferenttypes of NOM?• Can we measure regrowth potentialwith simpleinstruments?
Experimental(lab work)required.Collabororation with PhDstudentMasoumehHeibatianddocentKathleenMurphy.
Innovativepipematerialsinthewaterandwastewaternetworks
Outline annika.malm@ri.seToevaluatetheinnovationpotentialforthepipematerialuseinthewaterandwastewaternetworks
Theprojectincludesaliteraturereviewandasystemanalysisforpotentialfuturepipesystems.
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Investigation of faecal contamination of soil water surrounding the drinking water distribution network in GothenburgBackgroundUnexpectedevents(e.g.,pressuredrops,etc.)cancauseintrusionofpathogensintothedrinkingwaterdistributionnetwork.FewstudieshavemeasuredthefaecalindicatorconcentrationsinsoilwaterAimSamplesoilwaterduringmaintenanceworkonthedrinkingwaterdistributionnetworkinGothenburgandtoanalysethesamplesregardingfaecalindicatorsandpathogens.
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ContactVictorViñas([email protected])ViktorBergion([email protected]),AnnikaMalm,RISE