HDAF40Operation and maintenance manual.docx
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HDAF40Operation and maintenance manual.docx
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HDAF40Operationandmaintenancemanual
HDAF-40High-efficiencyDissolvedAirFlotation
Operationandmaintenancemanual
WuxiTsingdaBiotechE.P.E.Co.,Ltd.
Catalogue
Noticeitems
PartOneInstallation
PartTwoPrinciples
PartThreeMainunits
ParFourFunctionandoperation
PartFiveStartupandrunning
PartSixMaintenance
PartSevenTechnologyparametersanddrawings
NoticeItems
HDAFsystemisanintegratedprocessconsistingofmechanic,electricandrelatedchemicaltreatment.Foryourbetteroperationandmaintenance,themainnoticeitemsareasfollows:
●Themaintenance,changeandadjustmentmustbeoperatedbyprofessionalelectricstaff;
●Themaintenance,changeandinstallationmustbeoperatedbyprofessionalmechanicengineers;
●Themaintenance,changeandinstallationofelectricandmechanicareforbidden,whenchemicalsarebeingused;
●Powermustbeshutoffbeforedoingthemaintenance,changesandadjustmentofequipments;
●Safetyisthefirstprincipleformaintenanceandoperations。
●Alloperatormustbetrainedprofessionally,andrememberrelatedsafetyitems.
●Allmaintenanceandoperationmustobeytherelatedsafetyandnoticeitems.
●Chooserighttoolsforequipmentmaintenance.
●Properlaborandfacilitiesarenecessarywhenhoisting.
●Allelectricalandmechanicequipmentsmustbecheckedregularlyanddaily.
●Allmaintenance,changeandadjustmentmustobeylocallawandsupplier’srequirements.
●Ifanyquestions,pleasecontactourcompanytimely.
PartOne
Installation
Partsdrawingofequipmentattached:
1Generalinstallationprinciples
Duotoeverysitehasdifferentsituations,justgeneralprinciplesareprovided,adjustmentsarenecessaryaccordingtotheelectricalandmechanicalrequiresonthesite.
●Theequipmentlevelcanbeinstalledoverheadorintheflatandsolidfoundationaccordingtotheengineeringrequirements(Theweightloadincludesliquids).Alldirectionsofequipmentmustbehorizontalforhigh-efficiency.
●Allconnectionsofpipelinevalvesaresealedwell;allwiringisplacedregularlyaccordingtoelectricalprinciples,andinstalledbyprofessionalstaff.
●
Equipmenttricemovement:
thisequipmenthasfourholesfortricemovement.
PartTwo
Principles
WorkPrinciple:
Themainaimofairflotationistorealizetheseparationofsolidandliquid,atthesametime,theCOD,BOD,chlorma,etc.canbereducedatacertainextent.
IntheAirflotationsystem,thesuspendedsolidsareadheredwithmicro-airbubbleproducedbydissolvedgasdeviceandthesuspendedsolidswouldrisetothewatersurfacealongwithmicro-airbubble,thencomeintobeingtheflotationscumatthewatersurface.Thescumwouldbescrapedintosludgetankatacertaintime.
Atacertainworkpressure(generally4-5kg/cm2),thecleartreatedwastewater(effluentofairfloation)withairwouldbepumpedtopressurevesselbyshootflowinspiratorydevice.Andthepressuredwaterandairisquicklyreleasedanddecompressedtoproducemicro-airbubble(30um~50um).
PACorPAMwouldbefeededintorawwastewater,after3min-15minflocculationreaction(thereactiontime,PACorPAMfeedingquantity,etc.mustbedeterminedthroughexperiment).Afterreaction,therawflowtocontactarea.Inthecontactarea,micro-airbubblesadherewithflocculeandthentoseparationarea.Themicro-airbubbleswithflocculetogetherrisetowatersurfaceandcomeintobeingscum.Thescumisscrapetosludgeareabyscraper.Thelowerclearwastewaterflowtoclearwatervesselthroughthecatchmentpipe.Partofthecleartreatedwastewaterwouldberecirculatedforthedissolvedairdevice,andtheotherpartwouldbedischarged.
Separationeffectofsolidandliquiddependsonthefollowingthreeaspects:
1、WhetherhydrophilicorhydrophobiccharacterofflocculesafterfeedingPACorPAM
2、Duringmixingreaction,makesurethatflocculecontacttimelywithenoughmicro-bubbles.
3、Duringseparationreaction,Themicro-bubbleswithflocculetogetherrisetowatersurfaceandcomeintobeingscum.Thescumisscrapetosludgeareabyscraper.Thelowerclearwastewaterflowtoclearwatervesselthroughthecatchmentpipe.Sofluidnesscontrolisoneofkeyfactorsofseparationeffect.
PartThree
Mainparts
HDAFunits:
Mainchamber,micro-bubblegenerator,electricaldevice,scumcollector,balancedreleaseddevice,outletleveladjustmentdevice,sludgescoop,corridor,handladder。
PartFour
Functionoperation
(HDAFsystemchartisasfollowing)
1.cleartreatedwastewatervessel2.recirculatedpump3.inletvalvefordissolvedairwater4.pressuremeter15.pressuremeter26.pressurevessel(dissolvedairsystem)7.aircompressor8.Ttypereleaser9.scraper10.airfloationdevicebody11.valveforscumdischarging12.clearwatercatchmentpipe13.rawwastewater14.outletvalvefordissolvedairwater15.shootflowinspiratorydevice16.bounce-backvalve
ⅠSystemcommissioning:
A、EliminateallthewastesubstancesinthetanktoavoidcloggingCheckwhetherthewaterpump,aircompressorandeachtransmissionunitisflexible.Addthelubricationoilaccordingtotherules.Ifthereisanyabnormal,eliminateit
B、Putthroughthepowersupplyandstartthewaterpump.Checkwhetheritsturningiscorrect.Ifitisreversing,Changethephasepositionoftwowires
C、Starttheaircompressorinthemanualposition.Checkingwhetheritsrunningisnormal.Ifthereisanyabnormal,eliminateitintime
D、Presstheskimmerstartbutton.Theskimmerstartsrotarymovingandthescraperboardfixedondoublepitchlinkrotarymovesfollowingthelink.Withthepushingoflaminatedrubber,thescumwillbecarriedtoseparationzoneandentersintoslagnotch.Theskimmovementisaccomplished
2、Testrunning:
A、Addwater:
Fillthecleanwatertankofaerationfloatationtankincleanwater.Usetheadjustdeviceinthecollectionpipeoutlettoadjustthewaterlevelofaerationfloatationtank.
B、Startuptheaircompressorbyhand,itcanstopautomaticallywhenthepressureupto0.7Mpa
C、Dissolvedgassystemtestrunning:
Closeelectriccontrolvalveanddissolvedgaswateroutletvalve.Puttheaddgaschoosebuttonintheautomaticposition,putthroughthepowersupplyandstarttheworkingpump.Opentheinletcontrolvalveofworkingpump.Thepressureinmanometerrisegraduallytoachievethepressurethepumpcanachieve(thepressureinmanometerofdissolvedgastankcanachieve3~5Kg/cm2),atthistime,openthedissolvedgasoutletvalve.Thedissolvedgaswaterentersintothereleaserthroughtheoutletvalveandisreleasedtotheaerationfloatationtank.Largequantityofmicroairbubbleturnsthecolorofcleanwatertowhite,thatmeansthedissolvedgassystemisnormal.Pressureofdissolvedgaswatercanbeseeninthemanometerondissolvedgastank.Thepressurevaluecanbecontrolledbythestartvalueofcontrolvalveinthepressurerangethepumpsupply.Normally,itis3~5Kg/cm2.Higherthepressureis,morethedissolvedgaswaterisandhigherthemicroairbubbledensityis.Theairpressdevicewillsupplytheairofdissolvedgassystem.Thedissolvedgaswatercarriestheairfromtank,sotheairinsidetankreducesandthewaterlevelrises.Whenthewaterlevelrisestoacertainposition,theautomaticliquidlevelcontrolsystemwillcontroltheairpressdevicerunning(otherwiseitwillstop)inordertoholdtheairquantityinsidethedissolvedgastank.
D、Aerationfloatationrunning:
Iftherunningofdissolvedgassystemisnormal,themethodisasfollowing:
1)AdjustthePHofwastewater,normallythePHis7.5~8.5
2)Choosecoagulantandflocculantaccordingtothewastewaterquality。
3)Dosingquantityisusually0.03~0.3%accordingtothewastewaterconcentration,SSanddosingpower。
4)Transportthewastewaterbeingreactedtotheaerationfloatationtoseparateliquidandsolid.Theflowratemaybefromsmalltolargetillitachievesthespecifiedvalue.。
5)Addtheair:
Normallychoosetheautomaticairadding,thatmeansputtheairaddingbuttonintheautomaticposition.。
6)Scrapethescum:
Normallychoosetheautomaticscumscraping,thatmeansputthescumscrapingbuttonintheautomaticpositionandsetthetime.Themanualcontrolcanbeusedunderthespecialcondition.。
E、Dissolvedgaswaterquantitydetermination:
Usuallythedissolvedgaswaterquantityis30~50%ofthewastewaterquantity.Inthetheory,dissolvedgaswaterquantitycanbedecidedbySScontentbecauseofthedifferentSSquantityofvarieswastewater.。
F、Electricaloperationsisattachedelectricaldrawing.。
ⅡAdjustingthescraperubber:
Everypiecesofscraperubberarefixedonthestainlesssupportbyscrews,andeverypieceshavemovableholesforadjustingthepositionofrubberpanel.
ⅢUsethedissolvedgasoutletvalvetocontroltheflow.
Aerationfloatationtankwaterleveladjustment:
Waterlevelcaneffluenttheskimmingeffects.Ifthewaterlevelislow,thescumcan’tbescrapedintosludgetankeasily.Ifthewaterlevelishigh,largequantityofwaterwillenterintosludgetank.Usetwocontrolpipesinthecollectionpipeoutlettoadjustthewaterlevelinsidethetank.Thewaterlevelshould1~2lowerthanthescumoutlet.
PartFive
Startupandrunning
1、Theequipmentshouldbetestrunningbeforeusingaccordingtothetestrunningmethod.Thenitcanbeusednormally.
2、Firstruntheequipment,thatmeansthedissolvedgassystemrunsfor5~10minutes.Thentransporttheflocculatedwastewater.Thewastewaterquantityisincreasedgraduallytillitachievesthefullload.
3、Whenitstopsrunning,closethewatersupplyofa
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