外文翻译氧化沟工艺在水处理中的应用与发展.docx

外文翻译氧化沟工艺在水处理中的应用与发展.docx

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外文翻译氧化沟工艺在水处理中的应用与发展

中文3667字

附录一

Oxidizetheditchcraftindirtywaterhandleofapplicationanddevelopment

Summary:

ThistextexpatiatedprimarilytheCarrouseloxidizestheconstruction,craftmechanismoftheditchandcirculatetheproblemexsitedintheprocesswiththehomologousthemethodofsolution.Finally,introducetheCarrouseloxidizethelatestresearchprogressoftheditchandpointedoutthefutureandmainresearch

direction.

Keyphrase:

TheCarrouseloxidizestheditchdividedsbythephosphortakesoffthenitrogenconstructionmechanism

ApplicationandDevelopmentofCarrouselOxidationDitchProcessonWastewaterTreatment

Abstract:

Thestructureandthetechniquesofcarrouseloxidationditchprocessonnitrogenandphosphorremovalareintroducedinthispaper.Theproblems

inrunningandtheircorrespondingresolventarealsopointed.Atlast,Theauthorshowedtheuptodateresearchimprovementandthemainlyfutureresearchdire-ction.

Keywords:

Carrousel;oxidationditch;nitrogenandphosphorremoval;structure;techniques

1.Foreword

Oxidizetheditch（oxidationditch）againacontinuouscirculationspiritpond（Continuousloopreactor）,isaliveanddirtymiremethodakindoftotransform.OxidizingthedirtywaterinditchhandlesthecraftberesearchedtomanufacturebythehygieneengineeringgraduateschoolofHollandinthe50'sof20centuriessuccess.Sincein

1954atDutchthrowintheusagefortheveryfirsttime.Becauseitsawaterfluidmattergood,circulatethestabilityandmanageconvenienceetc.techniquecharacteristics,alreadyatdomesticand

internationalandextensiveapplicationinlivethedirtywatertoisdirtytomanageaqueouslywiththeindustry[1].

Currentapplicationthanoxidizeextensivelytheditchtypeinclude:

The（Pasveer）oxidizestheditch,the（Carrousel）oxidizestheditch,（Orbal）oxidizestheditch,thetypeofToxidizestheditch（threeditchtypesoxidizetheditch）,thetypeofDEoxidizestheditchtoturntooxidizetheditchwiththeintegralwhole.Theseoxidizetheditchbecauseofthedifferenceofesseinconstructionwithcirculating,thereforeeachcharacteristics[2].Thistextwillintroduceconstruction,mechanism,existentproblemanditslatestdevelopmentsthatCarrouseloxidizeditchesprimarily.

2.TheCarrouseloxidizestheconstructionoftheditch

TheCarrouseloxidizetheditchtoberesearchedtomanufacturebyDutchDHVcompanydevelopmentin1967.OxidizethelastthecompanyofDHVinfoundationoftheditchintheoriginalCarrouseltopermitedspeciallythecompanyEIMCOtoinventagainwithitspatentintheUnitedStatesCarrousel2000system,realizesthelivingcreatureofthehigherrequesttakesoffthenitrogenwithdividedbythefunctionof.Therehasbeenintheworlduptonowmorethan850CarrouselsoxidizetheditchwiththeCarrousel2000systemarecirculating[3].

TheCarrouseloxidizestheditchtheusagethespiritofthatdefinitedirectioncontrolwithshakeupthedevice,facetomixwiththeliquiddeliverthelevelspeed,frombutmakedrivetheliquidofadmixturethatshakeupisinoxidizeditchshutmatchoutletcirculateflow.Thereforeoxidizetheditchhavethespecialhydraulicsflowsthe,currentcompletemixwiththe

characteristicsofthetypereactor,havethecharacteristicsthatpushtheflowtypereactoragain,theditchinsideexsitsobviouslyofdeliquescenceoxygendensitystepsdegree.Oxidizingtheditchcrosssectionisrectangleortrapezoids,theflatsurfaceshapeismanyforoval,theditchinternalwaterisdeepgeneralfor2.5～4.5ｍ,thebreadthisdeep

comparefor2:

1,alsohavethedeepwateramountto7msof,ditchinsideaveragespeedinwatercurrentis0.3ms/s.Oxidizeditchspiritadmixtureequipmentscontainsurfacespiritmachine,thespiritofturntobrushorturnthedishandshoottoflowthespiritmachine,pipetypespiritmachinewithpromotetakecareoftypespiritmachineetc.,matchwithinrecentyearsusagestillcontainunderwaterpushmachine[4~6].

3.TheCarrouseloxidizesthemechanismoftheditch

3.1TheCarrouseloxidizestheditchhandlesdirtyandaqueousprinciple

TheatthebeginningcommonCarrouseloxidizesthedirtywaterininsideincraftoftheditchdirectwithdirtymireinrefluxtogetherenteroxidizetheditchsystem.ThesurfacespiritmachinemakesfuseintheliquidofadmixturethedensityoftheoxygenDOincreasesabout2the3mgs/L.Underthiskindofwellthetermoftheoxygen,themicroorganismgetstheenoughdeliquescenceoxygencomesandgotodividedbytheBOD;Atthesametime,theammoniaweretoooxidizednitratewithsecondnitrate,thistime,mixwiththeliquidbeplacedintheoxygenappearance.Inthespiritmachinedownstream,afterwatercurrentbebecomebytheswiftflowappearanceofthespiritDistrictofevenflowtheappearance,thewatercurrentmaintainsintheminimumcurrentvelocity,guaranteeingtheliveanddirtymirebeplacedinthefloatstheappearance.（averagecurrentvelocity>0.3ms/s）Oxidizemicrobially

theprocess

consumedtofusetheoxygeninthewater,untilthevalueofDOdeclinesforzero,mixingwiththeliquidreporttheanoxiaappearance.Versanitricthatturnthefunctionthroughanoxiaarea,mixwiththeliquidentertohavetheoxygenarea,completingoncecirculating.Thatsysteminside,the

BODdeclinesthesolutionisacontinuousprocess,thenitricturnsthefunctiontoturnwiththeversanitricthefunctiontakeplaceinsamepond.Becauseofstructuralrestrict,thiskindofoxidizetheditchalthoughcanthenvalidwhereaboutsBOD,dividedbythephosphorustakeoffthenitrogenousabilitylimited[7].

Forthesakeoftheacquisitionbetterdividedbythephosphorustakeoffthenitrogenousresult,Carrousel2000systemsincreasedaoxygenDistrictbeforecommonCarrouseloxidizeditchwiththeuniqueoxygenarea.（callagainthattheversanitricinfrontturnsthearea）ThedirtymireinallrefluxesenterstheanaerobicDistrictwith10-30%dirtywater,canundertheanoxiawith10-30%carbonsourcetermcompleteremainingofdirtymireinrefluxinsidenitricacidnitrogentoversanitrictoturn,createsfortheuniqueoxygenpondofhereafteruniqueoxygenterm.Atthesametime,anaerobicDistrictinsideofconcurrentlythesexgermsconvertthedissolubilityBODVFA,thegermacquiretheVFAitsassimilationPHB,theenergysourceneededsolvesinthephosphoricwaterandcausephosphaticreleasing.TheanaerobicDistrictawaterenterstheinnerpartinstallstheuniqueoxygenareathathavethemixer,theso-calleduniqueoxygenisapondinsidetomixwith

liquidsincehavenothenumeratoroxygen,alsohavenothecompoundoxygen（nitricacidroot）,thehereuniqueoxygenenvironmentisnext,70-90%dirtywatercanprovidetheenoughcarbonsource,canmakethegermofreleasedthephosphoruswell.TheuniqueoxygenareaconnectsbehindthecommonCarrouseloxidizestheditchsystem,furthercompletingtodoawaywiththeBODandtakeoffthenitrogenwithdividedbythephosphorus.Finally,mixwiththeliquidtransferthedirtymireinsideinoxidizeditchenrichoxygenareaeject,whileenrichingtheoxygenenvironmentgermsurfeit,phosphorusfromthewater,ejectingthesystemwiththedirtymireinsurplus.Likethis,inCarrousel2000systems,thancompletedtodoawaywiththeBOD,CODwithtakeoffatthesametimegoodlythenitrogendividedbythephosphorus.Synthesizingand

DirtywaterintheriverCity,longsandCitydecontaminationcenter[softhedirtythefactoryofwaterinthefirstinKunmingofadoptionthatcraftshandlesthemovementresultofthefactorytherefore:

ThroughCarrousel2000systemafterhandling,theBOD,COD,SSdoesawaywiththeratetoallcometoa90%above,theTNdoesawaywiththeratecomestoa80%,theTPdoesawaywiththeratetoalsocometoa90%.

3.2TheCarrouseloxidizestheditchdividedsbythephosphorustakesoffthenitrogenousinfluencefactor.

AffectingtheCarrouseloxidizestheditchdividedsbythephosphoricfactorisdirtymire,

nitratedensityandqualitydensitiesprimarily.Theresearchexpresses,beingtotalanddirtymireas11%thatahourbiggestphosphorus4%withdealisitsfuckdirtymiredealwithinliveanddirtymire,keepforthethegermphysicalendowmentmeasures,butwhendirtymireover15dhourdirtymiretheinsideisbiggesttocontaintheobviousdescentindealinphosphorus,canningnotreachthebiggestdividedingbytheresultofphosphorusonthecontrary.Therefore,prolongpersistently

thedirtymire（forexample20ds,25ds,30ds）istohavenonecessary,properchoosetousewithinthescopeof8~15d.Atthe

sametime,highnitratedensitywithlowqualitydensitydisadvantageindividedbytheprocessofphosphorus.

AffectingtheCarrouseloxidizestheditchtakesoffthenitrogenousandmainfactorisDO,nitratedensityandcarbonsourcedensities.Theresearchexpresses,oxidizingtheditchinsideexsitsdeliquescenceoxygendensitystepsdegreenamelythegoodoxygenareaDOattains3~3.5mgs/L,theanoxiaareaDOattains0~0.5mgs/Lisapriorconditiontotakeplacenitricturnreactionandversanitricsturnthereaction.Atthesametime,amplecarbonsourceandhigherC/theNratiobenefitstotakeofftocompletenitrogenously[7].

4.TheCarrouseloxidizesproblemandsolutionmethodsoftheditchesse.

ThoughtheCarrouseloxidizestheditchhasawaterfluidmatterwell,theanti-poundsattheburthenabilitystrong,dividedbythephosphorustakeoffthenitrogenefficiency.But,inphysicallyofmovementprocess,stillexsitsaseriesofproblem.

4.1Dirtymireinflationproblem

Whendiscardtheaquaticcarbohydratemore,theN,Pcontainstheunbalanceo