BULLETIN OCS

Odor Cont ro lChemica l Scrubbers

C O S T E F F E C T I V E

D U A L L A S T ® F R P A N DT H E R M O P L A S T I C S C R U B B E R S ,

F A N S A N D V E N T I L A T I O N P R O D U C T S

Known for our qual i ty, Proven to be dependable

Munic ipa l and Indus t r ia lOdor Cont ro l Spec ia l i s t s

QUINTESSENTIAL™ WITHMIXED FLOW EXHAUSTER

PT500 WITHDUALL DUCTING

PTMD WITHDUALL NH FAN

MET-PROA Met-Pro Product Recovery/Pollution Control Technologies Business

Environmental Air Solutions DUALL

Duall has designed and manufactured odor control systems for more than 40 years.

Duall has manufactured and tested systems from 100 cfm to more than 60,000 cfm. We have installed systems from thecoldest climates of Canada to the hot and abrasive conditions of Texas and Arizona. And we have designed systems towithstand 150 mph hurricane winds in Florida and seismic zone 4 requirements in California.

Duall...Leaders in Odor ControlSystem Design and Manufacturing

Material of Construction: DUALLast® FRPApplication: Dewatering and Lime Stabilization Odors Problem: H2S and NH3

Solution: Multi Stage PTMD

Material of Construction: UV ThermoplasticApplication: Sludge Digestion Problem: H2S, DMS/DMDSSolution: Single Stage PTMD

Tested Inlet Outlet Removal Efficiency

H2S 50 ppmv < .1 ppmv > 99.8%

NH3 20 ppmv < .2 ppmv > 99%

Tested Inlet Outlet Removal Efficiency

H2S 17 ppmv .005 ppmv 99.97%

DMS/DMDS 29 ppmv NON-DETECTABLE

Material of Construction: 100% Corrosion Resistant UV Stabilized PVCApplication: Wastewater Treatment Plant Odors Problem: H2S, NH3 and RSC’sSolution: Multi-Stage, Multi-Chemistry QuintEssential™ Scrubber

ASKFOR O

UR

COMPLETE ODOR CONTROL CD

For a detailed proposal visit www.dualldiv.com or call (989) 725-8184

Wind band entrains outsideair above motor to enhancedischarge volume and effec-tive stack height

Modular constructionspeeds and simplifies installation, reducescosts and downtime

Free outside air intro-duced downstream ofthe scrubber dilutesand disperses thetreated exhaust air

Specially designed,mixed flow impellersprovide high pressureand volume at lowRPM

Direct drive motorsare virtually maintenance-free

PTMD LPTMD LOWOW PPROFILEROFILE PPACKAGEDACKAGED SSCRUBBERCRUBBER SSYSTEMSYSTEMS

QQUINTUINTEESSENTIALSSENTIAL™ S™ SCRUBBERCRUBBER SSYSTEMYSTEM WITHWITH MMIXEDIXED FFLOWLOW EEXHAUSTXHAUST TTECHNOLOGYECHNOLOGY

EEQUIPMENTQUIPMENT DDESIGNSESIGNSWhether your requirements are based on space limita-tions, system flexibility, maximum efficiency, or a com-bination of all these, we have a system for you.

• Packed bed towers • Single-stage• Low profile packaged systems • Multi-stage• Horizontal cross-flow scrubbers • Multi-chemistry

QQUALITYUALITY CCONTROLONTROL ANDAND PPROJECTROJECT MMANAGEMENTANAGEMENTIn-house fabrication of our systems in thermoplastics orDUALLast® FRP allows us to constantly monitor manu-facturing quality and meet delivery schedules.

MMINIMUMINIMUM AAIRIR VVOLUMEOLUMEDuall is expert in ventilation design. Covers, shields,hoods, and curtains can reduce initial system costs andcontinuously save on operating expenses.

FFIELDIELD SSERVICESERVICES, E, ENGINEERINGNGINEERING, I, INSTALLATIONNSTALLATION,,SSTARTTART-U-UPP ANDAND OOPERATORPERATOR TTRAININGRAINING

BBUDGETUDGET DDESIGNESIGN ANDAND AASSISTANCESSISTANCEAsk for our ”Budget Design“ package which includes:• Performance requirements• Written specifications• System and PID drawings• Component sizing (pumps, fans, motors, etc.)• Annual operating cost estimation• System budget price

As the saying goes, “the last shall be first”... unique DUALLast® FRP construction extends ser-vice life; and assures stronger and more corrosion resistant products at competitive costs.

• PVC corrosion resistant inner liner is a minimum 1/8” thick (125 mils), comparedto 20-50 mils for typical FRP composites

• Homogenous thermoplastic inner liner is not subject to costly weeping and crazingfailures often associated with solid FRP construction

• Thermoplastic lined vessels can be spark tested to ensure leakproof constructionwhich is not always assured in solid FRP fabrications

• Outer FRP shell provides maximum U.V. resistance and structural strength for very high wind or vacuum applications

• DUALLast® is NSF 61 approved by the National Sanitation Foundation International for use in potable water applications

• Only DUALLast® FRP offers our unique Extended Service Life Warranty

Material of Construction: DUALLast® - the Ultimate FRP ConstructionProblem: H2S and other odorsSolution: Single Stage PTMD

Material of Construction: FRPApplication: 175,000 Total CFM Wastewater Treatment Plant Odors Problem: H2SSolution: PT-500 Systems with Duall Ducting

Tested Compound Inlet Outlet Removal Efficiency

H2S 75 ppmv 0.3 ppmv > 99.5%

For a detailed proposal visit www.dualldiv.com or call (989) 725-8184

PT500 PPT500 PACKEDACKED TTOWEROWER SSCRUBBERCRUBBER SSYSTEMSYSTEMS

AADVANTAGESDVANTAGES OFOF DUALLDUALLASTAST®® FRPFRP

Printed on Recycled Paper

DUALL FANSManufactured in our factories, Duall Model RB, NHand MFE fans are performance certified by AMCA. Ourfan impellers are manufactured of FRP encapsulatedsteel providing the ultimate combination of corrosionresistance and structural integrity.

SUCCESSFUL APPLICATIONSMunicipal Waste Treatment

Aeration Basins Compost FacilitiesHolding Tanks Anaerobic DigestersDewatering Facilities Lift StationsClarifiers HeadworksSludge Dryers Bio Roughing TowersMunicipal Solid Waste Industrial Wastewater Toll Plants

Industrial Odor Control

Chemical Processing Compost FacilitiesPharmaceutical Fermentations Reactor VentsCoating Processes Food & Spice ProcessingStorage Tanks Animal Rendering PlantsCompost Facilities Paint StrippingFish & Poultry Processing Drying ProcessesPulp & Paper Manufacturing Breweries

Some Typical Odors Controlled by Duall

Hydrogen Sulfide AminesAlcohols ChlorineKetones PhenolsAldehydes AcrylatesAcetic Acid MercaptansCreosols Carboxylic AcidsDimethydisulfide DimethylsulfideAmmonia Butyric Acid

Cost effective thermoplastic odor capture enclosures and ducting are availablefor DAF processes, belt filter presses, lime stabilization tanks, and many otherapplications. Hoods and ducting are available in corrosion resistant FM4910approved materials.

SOLID PVC VENTILATION SYSTEM HOODS AND DUCT

Duall NH Fans Duall Mixed Flow Exhausters with effective stack height of 60 feet.

1550 Industrial Drive, Owosso, MI 48867(989) 725-8184, FAX: (989) 725-8188E-mail: info@dualldiv.com, Web Site: www.dualldiv.com

©COPYRIGHT 2011 MET-PRO CORPORATION, DUALL 11-5023 911

MET-PROA Met-Pro Product Recovery/Pollution Control Technologies Business

Environmental Air Solutions