Fixed media IFAS (Integrated Film Activated Sludge)
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Cleartec ® System Fixed media IFAS (Integrated Film Activated Sludge) Key features & benefits • Increased BNR (Biological Nutrient Removal) • Improved SRT (Solids Retention Time) with reduced solids flow to clarifiers • Modular design for simple installation, expansion and upgrades • No media loss or migration • Aerated using fine bubble diffusers How we create value • Maximizes basin capacity and improves system performance • Economic option for plant expansion without additional aeration basins • Fine bubble diffusers operate at normal operation costs Cleartec ® is a registered trademark of Langendorf Textil GmbH
Transcript of Fixed media IFAS (Integrated Film Activated Sludge)
Cleartec® System Fixed media IFAS (Integrated Film Activated Sludge)
Key features & benefits
• IncreasedBNR(BiologicalNutrientRemoval)• ImprovedSRT(SolidsRetentionTime)withreducedsolidsflowtoclarifiers
• Modulardesignforsimpleinstallation,expansionandupgrades
• Nomedialossormigration• Aeratedusingfinebubblediffusers
Howwecreatevalue
• Maximizesbasincapacityandimprovessystemperformance
• Economicoptionforplantexpansionwithoutadditionalaerationbasins
• Finebubblediffusersoperateatnormaloperationcosts
Cleartec®isaregisteredtrademarkofLangendorfTextilGmbH
TheCleartec® system allowsmoreefficientwastewatertreatment.Thetextilesupportmedia is immersed in an aerationbasincontainingsuspendedbiomass.Themediaprovidesasurfaceareaforincreasedactivebiomassgrowth.
Cleartec® System
Textile Support Media
IFAS flowsheet with fixed media
Clarifier
Aeration
RAS WAS
IFASIFAS (Integrated Film Activated Sludge) is aneconomicalsolutionfortheupgradeandexpansionofexistingactivatedsludgesystems.IFASisparticularlysuitabletoplantswhere(duetolimitedspaceorbudgets)additionalaerationsbasinscannotbeaccommodated.
IFASisahybridtreatmentapproachthatcombinesattachedbiologicalgrowthwithsuspendedbiologicalgrowth.Asolidsupportmediaisimmersedintoabasininwhichbiologicalgrowthalsotakesplaceinsuspension.Themediathenprovidesasurfaceforthegrowthofattachedbiomass.Thiscombinationofattachedbiologicalgrowthandsuspendedbiologicalgrowthisamoreefficientwastewatertreatmentsystembecausethereisanincreaseintheoverallactivebiomassvolumeforagivensystem.
BenefitsofanIFASupgrade:• Allowssignificantexpansionwithoutadditionalaerationbasins
• IncreasedBiologicalNutrientRemoval(BNR)• Improvedsolidssettling• Greaterresistancetohydraulicsolidswashout• Increasedresiliencetoshockloading• Reducedsolidsflowtoclarifiers,increasingclarifiercapacity
Cleartec® SystemIFASisawell-establishedtechnology,andhasbeenappliedasaneffectivewastewatertreatmentprocessforoversixtyyears.TheCleartec®SystemisthelatestinnovationinfixedmediaIFASsystems,improvingsystemviabilityandperformance.
Onesuchadvanceistheuseofatextilematerialsupportedinaridgeframeassemblyforsubmersionintheactivatedsludgebasin.ThesesheetshaveseveraladvantagesovermobilemediainanordinaryIFASsystem:
• Noriskofmediamigration• Nomedialoss• Noneedformediaretentiondevices (suchasscreensorairknives)
• Modulardesignminimizescapitalexpenditure• Eliminatestheneedtodewaterbasinsformaintenanceofaerationequipment
ThepatentedconstructionofCleartectextilemediaisextremelyrobust,couplingsupportstripswithanopenmesh.Thesupportstripseliminateproblemsassociatedwithelongationandbreakingwhichhaveplaguedotherfixedmediasystems.Thereisnoneedforretensioning:facilitiesusingCleartectextilemediahaveoperatedsuccessfullyfortenyearswithoutanyneedformediareplacementoradjustment.
Cleartec®IFASmodule
Patented Cleartec® media
Cleartec®mediashowingfixedbiomass whenpulledoutthewater
TheCleartectextilemediaencourageefficientbiomassgrowthtodeliversignificantperformanceenhancements.
System UpgradesAfacility’scapacitycanbeincreasedwithlittleornoincreaseintankage,andtheleveloftreatmentofanexistingfacilityiseasilyimprovedbyapplyingaCleartecIFASsystemupgrade.Coldweatherapplicationscan,forexample,beeasilyupgradedtoperformammoniaremovalthroughouttheyear.TheCleartecmodulecanalsoincreasetheoverallSolidsRetentionTime(SRT)ofthefacility.
AtreatmentplantcanalsobeupgradedtoprovidebiologicalnutrientremovalusingtheCleartecsystem.Cleartecmodulesattheaerationstagecanbeusedtoreducetherequiredaerobicvolume:thisthenallowsaportionoftheaerobicvolumetobefreeduptoaccommodateananoxicoranaerobicenvironment.
ThesesystemupgradesresultinahighlyeconomicIFASsystem,suitableforwastewatertreatmentsystemupgrades.
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SystemsApproach
IFASmodulesinanaerationbasin
IFASsysteminoperation
FortheeffectiveimplementationofIFAStechnology,fixedmediamustbeproperlysized,placedandintegratedwiththeaerationequipment,mixingequipmentandbasingeometry.Thisrequires asystemsapproach.
Ovivohasawealthofknowledgearoundtheselectionanddesignofprocessequipment,bioreactors,andBiologicalNutrientRemoval(BNR)systems.WeapplythisexpertisetoourIFASsystems,combiningasystemsapproachwithstrongaftermarketsupport,includingtrainingandoperationalconsulting.
