磁化与混凝组合工艺设备研究

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1、大连交通大学硕士学位论文磁化与混凝组合工艺设备研究姓名：宋明申请学位级别：硕士专业：环境科学指导教师：费庆志20081226大连交通大学T学硕十学位论文AbstractMagneticseparationtechnologyisanewwatertreatmenttechnology．Magneticseparationhasanumberofsuccessfulapplicationsasaphysicsprocessingtechnologyinwatertreatment，andshowsmanyadvantages．T

2、hemagneticseparationmethodutilizesmagnetismofimpuritiesparticlesinwastewaterformagneticseparation．aStothenon-magneticorweakmagneticparticles，magneticinoculationtechnologywillenablethemtohavemagnetism．Thenwiththeroleoftheexternalmagneticfield，thesuspendedsolidsinwaSt

3、ewatercanbeseparatedandobtainedcleanwater．Comparisonwithconventionalmethods，suchaSsettlement，filtering，magneticseparationhastheabilityofhandlelargeamount，hi【ghefficiency，lowenergyconsumption，simpleandhascompactequipment．BecauseofhighCostofinvestment，largearea,longre

4、sponsetimeofthetraditionalcoagulationseparationtechnology，weusenewtechnology，designthediscmagneticseparationresponsedevicewhichhasmixedreactionsystemandslagseparationsystem．MagneticdiskseparatorhaSsmallpowerconsumption，energyconservationanduseofanewtypeofNd··Fe--Bma

5、gnettoovercomeaweakmagneticfieldandweaknessesmagneticgradientofpermanentmagnetsuccessfully．Atthesametime，becauseofthemagneticpressure，moistureofresiduehascertainabatement．Inthemagneticseparationtechnology，thelow-costmagneticspeciescomesfromabandonedmillpowderafterth

6、eCarbearingofWafangdianBearingFactoryofDalianCityinLiaoningProvince，magneticspecieshavefollowingcharacteristics：usingwastetotreatwaste，arichsourceofrawmaterials；withoutcomplicatedpreparationtechnology；low-costandbeefficientandsuitablefora11typesofindustrialwaStewate

7、r；withouttheintroductionofharmfulheavymetals．Magneticplaysaroleofstrengtheningofflocculation，raisingseparationeffect．BytheresearchofsewageofDalianJiaotongUniversity，emulsionwaStewaterofWafangdianBearingplantofDaliancityinLiaoningProvince，accordingtolaboratoryanalysi

8、sattheexperimentalconditions，thebestreactionvalHeforthesewageiSshownasfollows：PACdosageis80mg／L；PAMdosageis5mg／L，magneticdosageis200mg／L：r