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1、哈尔滨工业大学工学硕士学位论文AbstractWithpeople’sattentiontothehealthriskofchlorinationDisinfectionBy-Products,DBPsinchlorinateddrinkingwaterisahotissueinwatersupplyfieldtoday.Takingurbandistributionsystemasstudyobject,andqualitysafetyofpotablewaterasthepurpose,thepaperworkedsystemiclyandprofound
2、lyonformationruleandcontrolofDBPsinwaterdistributionsystem.Basedonthedemandofresearch,experimentalschemesofstaticbulkwater,staticpipewallanddynamicdistributionsimulatedsystemwereestablished;andbasedonlocalwaterandclimatecondition,UniformFormationConditionstestmethodofdeterminingTHMs
3、formationquantitywasestablished.Fromtestresults,formationmechanismofTHMswasanalysedatthekineticsangle,andreactionorderofTHMsformationwasdetermined.ThepaperanalysedtheinfluenceoffactorstoTHMsformation,whichsuppliedtheorybasisforbuildingwaterqualitymodelofTHMsinwatersupplynetwork.Andt
4、hesefactorsareprecursororganicsubstance,chlorinedosage,concentrationofbromineion,temperature,pH,ammonianitrogen,pipematerialsandhydraulicconditions.AccordingtowatersupplynetworkstructurecharactersanddrinkingwaterqualityconditionofHarbin,thetestschemesofon-linewaterqualitymonitorwase
5、stablished,andwatersamplesofsixmonitoringpointsinsamplingpathweretestedinthestudy.GreatdealsofwaterqualitybasicinformationwereobtainedforsettingupTHMsmodel.Theresultsofwaterqualitymeasurementindicatedthatwaterqualityofwatersupplysystemmetthestandardofdrinkingwaterqualityasawhole.But
6、somewaterqualityindexes,suchasturbidityandfreeresidualchlorineofseparatesamplingpointspresentedoverproofstatus.TheconnectionbetweenTHMschangeandwaterqualityinwatersupplynetworkwasanalysedinthepaper.WaterqualitymodelsofTHMsinwaterdistributionsystemwerebuiltinthisresearchbymultivariat
7、eregressionmethodandartificialneuralnetworksmethod,respectively.Duringthemodelingprocess,SPSSsoftwarewasadoptedtoanalysedataandsolvethemultivariatelinearregressionmodel.Thenthemodelwasoptimizedtoimproveitsquality.Ontheotherhand,Matlabsoftware-II-哈尔滨工业大学工学硕士学位论文wasadoptedtobuildathre
8、elayersBPnetworkmod
