PURAF I L ®

www.puraf i l . comTHE B IOLOGICAL A IR TREATER

APPLICATION STUDYFOR

FIRSTIN CLEAN

AIR

PURAF I L’ S B IOLOGICAL A IR TREATERPROV IDES SUPER IOR ODOR REMOVAL

FOR MUNIC IPAL APPL ICAT IONS

T H E P R O B L E M

In this application study scenario, we will select awastewater treatment plant application with an airflow of5,000 cfm (8,500m3/hour) and hydrogen sulfide (H2S)concentration of 100 ppm average and 150 ppm peak.This example is typical of an application with high airflowand high concentration of H2S; the unpleasant odor ofH2S is noticeable even in concentrations as low as 0.025ppm. The low maintenance required by the BAT makes itthe best alternative for applications with higher gasconcentration such as the one selected above.

In this particular case, using a dry media scrubber wouldnot be the most economical solution, because of the needto replace the media on a regular basis. An even moreinconvenient alternative for these types of applications isthe usage of a wet chemical scrubber; a wet scrubberwould have a lower capital cost compared to the BATscrubber, but would require a significant amount ofchemicals to operate. Caustic wet scrubbers also requiremuch more maintenance and because they use harshchemicals, they are also subject to very strict guidelines.Overall, using a wet scrubber in this specific examplewould be even more expensive than a BAT scrubber.

Please refer to Purafil’s comparison sheet of biologicalversus wet scrubbers for further information.

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

The mixed media of foam cubesand spacers inside the BATallows for a standardequipment to accomplish morethan 99% removal of hydrogensulfide gas.

The polyurethane foam cubesprovide incredible surface areaper unit volume to host evenmore microbial biofilms.Polypropylene spacers supplysubstantial void space andstructural integrity for tall beds,as well as enhanced masstransfer and excellent hydraulicdispersion and distribution. Theunique mixed-media support

also grants control of surface area, biofilm depth andpressure drop. Ratios of foam-to-plastic vary based on ascientifically engineered formula, which is customized foreach application. This patented feature is only available withthe Purafil BAT system.

Purafil provides the design assistance to the customer toselect the appropriate equipment based on the customer’srequirements. For this particular application example, the

Purafil, Inc. • 2654 Weaver Way, Doraville, Georgia, 30340, U.S.A. • www.purafil.com • tel: (770) 662-8545 • (800) 222-6367

ISO 9001:2008

A B O U T T H E B I O L O G I C A L A I R T R E AT E R ( B AT )

Wastewater treatment plants often need to control the “rotten egg” odors resulting from their waste andsewage treatment processes. The unpleasant odors in and around these facilities are mainly caused by theemission of hydrogen sulfide gas (H2S). The conditions at treatment plants also favor other odorouscompounds including mercaptans, amines, aldehydes, and ketones. Biotrickling filters have been used forseveral years to control high levels of hydrogen sulfide gas from sewage treatment applications. Thisapplication study will showcase instances in which using Purafil’s Biological Air Treater (BAT) would be moreappropriate than using other forms of odor removal systems.

© Purafil 2012 ApStdy--BAT - 01

BAT equipment design for 10,588 cfm average H2S 25 ppmand peak of 50 ppm with redundant fan options

BAT equipment design for 18,500 cfm average H2S 42 ppmand peak of 235 ppm of H2S

system would be designed with aneight foot (2.44 m) diameterfiberglass reinforced plastic (FRP)vessel, BAT mixed media, 20 HPmotor and FRP blower (sized todeliver 5,000 cfm), a recirculationpump and a nutrient pump.

The BAT system operates on electricalpower and water supply. The water sourcecan be either potable or re-use water from the wastewatertreatment plant with at least 60 psi and the capability ofproviding a minimum of 50 gallons per minute of water. In atypical wastewater treatment plant application, usingsecondary treated effluent as a water source isrecommended; not only is it economical, but this type ofwater often carries nutrients needed by the bacteria in thebiotrickling filter.

In order to design the appropriate biotrickling odor removalsystem, the following information is required:

1) Airflow

2) Gas concentrations (average and peak conditions)

3) Required removal efficiency (normally 99% for H2Sand 90% for total odor)

4) Temperature of the airstream (this will normally beambient but variations must be known)

5) Availability and quality of the water (including flowand pressure if possible)

6) Odor Source ( e.g. headworks, pump station, sludgestorage, etc)

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

With any BAT sold, Purafil provides the vessel, media,blower and motor, recirculation pump, nutrient pump,complete water control cabinet, electrical control panel,system start-up and inoculation. Honeywell controls areoffered as standard equipment on all Purafil BAT systems.A detailed scope of supply can be provided for anyapplication.

The footprint required for such a scrubber is approximately20 feet (6.10 m) by 20 feet (6.10 m) which includes roomfor installation, all components, and access for requiredmaintenance. See design examples for reference.

Purafil, Inc. • 2654 Weaver Way, Doraville, Georgia, 30340, U.S.A. • www.purafil.com • tel: (770) 662-8545 • (800) 222-6367

ISO 9001:2008© Purafil 2012 ApStdy--BAT - 01

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CLEAN AIR SOLUTIONS for WATER & WASTEWATER APPL ICAT IONS

PREVENTING ODORS & CORROSION + EL IMINATING THE R ISK OF TOXIC GAS RELEASES

Purafil, Inc. is the leading manufacturer of dry-chemical and biological media and scrubbers that eliminate problematic gases in the waterand wastewater industries. We are a worldwide single-source provider of engineered, media, filters, systems and corrosion monitoringinstrumentation. As part of our committment to our ISO 9001:2008 quality management system, we perform rigerous quality assurancetests on all of our products. Purafil’s superior clean air products provide the following municipal solutions:

• ODOR CONTROL: to eliminate odorous gases from sewage collection and processing operations.

• TOXIC GAS SCRUBBING: to prevent accidental chemical releases at facilities storing hazardous quantities of toxic gases, specifically chlorine, sulfur dioxide and ammonia.

• CORROSION CONTROL: to protect electronic equipment from premature failure due to corrosion.

P U R A F I L’ S D R Y- S C R U B B I N G M E D I A A D VA N TA G E

Purafil’s dry-scrubbing media is either bulk-filled within our engineered equipmentor inside our MediaPAK™ modules or PuraGRID® filters which are then inserted intothe equipment. We offer a variety of patented dry-scrubbing granular mediaformulations to eliminate odorous, toxic, and corrosive gases. Our media permanentlyremoves gases from the air through chemisorption. During this instantaneous process,gases are adsorbed, absorbed and captured throughout the entire volume of themedia. The gases are then chemically transformed into harmless solids that remaintrapped inside the media. Once the gases are removed from your environment, theycannot re-enter the airstream.

As a complimentary service, we help you optimize your system’s performance bytesting remaining media life. Our laboratory technicians analyze samples from yoursystem(s) and provide a report indicating the necessary media replacement datebased on specific conditions in your facility.

Purafil also provides a patented biological mixed media which uses a natural bio-trickling microbial process to remove odorous gases. Please see our biological sectionfor more information on this advanced bio filtration technology.

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P U R A F I L’ S M U N I C I P A L M E D I A

D E S C R I P T I O N

Primary media for removal of hydrogen sulfide. Contains Media Life Indicator Pellets for a visual indication of remaining media life.

Broad spectrum control of odors, including mercaptans, amines, aldehydes, organics and sulfur dioxide.

Recommended for removal of chlorine and sulfur dioxide gases.

Removes chlorine gas; operates effectively in below freezing temperatures without special heaters.

Removes ammonia gas.

M E D I A

ODORCARB T M ULTRA

ODORMIX T M SP

CSO T M

CHLOROSORB ® ULTRA

PURACARB ® AM

L A N D F I L L - D I S P O S A B L E

YES

YES

YES

YES

YES

T H E P U R A F I L M E D I A A D VA N TAG E

BEST IN CLASS REMOVAL CAPACITY for Hydrogen Sulfide (H2S)

UNMATCHED POLISHING CAPABILITYwith 12% Impregnated Sodium Permanganate

THE ONLY AVAILABLE Alumina Based Media for Removal of

Chlorine (Cl2) and Sulfur Dioxide (SO2) Gases

HIGHEST AVAILABLE IN THE INDUSTRYwith 15% Minimum by Weight

Chlorine Gas (Cl2) Removable Capacity

THE ONE AND ONLY UL CERTIFIEDmedia for ammonia (NH3) removal.

P U R A F I L E N G I N E E R E D M E D I A S C R U B B E R S

Purafil’s engineered dry-media scrubbers offer several advantages compared to cometitive products. Our patentedmedia formulations are manufactured using special chemicals, or impregnants, that react with odorous gases andremove them from the airstream. Known as chemisorption, this process converts odors to harmless salts. Once thegases are removed from the environment, they cannot re-enter the airstream. As a result, Purafil’s engineeredmedia do not typically require special disposal precautions.

Purafil’s engineered media perform well at all temperatures and levels of humidity, they are non-flammable, ULClassified and remove a broad range of odors. Our media are also life testable. Through laboratory analysis, Purafilcan predict when media must be replaced which can help to prevent gas breakthrough and premature mediadisposal. Purafil offers a large selection of engineered media scrubbers to control odors in various municipal settings.

D R U M S C R U B B E R

Installed in over 1,000 pump stations, lift stations, and wet wells.

The Drum Scrubber is sized for airflows up to 1,000 cfm and is ideal for low tomoderate contaminant load applications. The Drum Scrubber houses multiple layersof Purafil media (typically Odorcarb™ Ultra or Odormix™ SP) for complete odorcontrol.

Standard Features:

• Linear, low-density polyethylene canister • Purafil ESD media volume by model: DS-100: 5 ft3; DS-300: 10 ft3;

DS-500: 17 ft3 , DS-1000: 39 ft3

• Integrated motor housing• TEFC motor• Aluminum blower assembly• Adjustable damper• Stainless steel and rubber latches• Stainless steel fasteners• Thermoplastic packing & FRP lid• Fernco flexible coupling at inlet• Airflows up to 1,000 cfm

Optional Features:

• Mist eliminator • Silencer• Explosion proof motor• Rain hood• Passive design• Differential pressure gage

C H L O R I N E D R U M S C R U B B E R

Used for changing cylinders less than 150 lbs for nuisance chlorine applications.

The Chlorine Drum Scrubber is sized for airflows up to 500 cfm. This scrubber isbulk filled with Purafil’s patented Chlorosorb® Ultra media which has the highestremoval capacity available in the industry.

Standard Features:

• Fiberglass reinforced plastic (FRP) construction• Purafil ESD media volume by model: CDS-100: 5 ft3; CDS-300: 10 ft3;

CDS-500: 17 ft3

• Integrated motor housing• TEFC motor• Aluminum blower assembly• Adjustable damper• Stainless steel and rubber latches• Stainless steel fasteners• CPV packing and FRP lid• Fernco flexible coupling at inlet• Airflows up to 500 cfm

Optional Features:

• Silencer• Explosion proof motor• Casters for mobility• Passive design with top inlet

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M O L E M A N H O L ES C R U B B E R

Used at street-level sewermanholes.

Constructed of stainless steel, theMOLETM Manhole Scrubberremoves odors from street-levelsewer manholes. Odors enter theMOLE through the bottom of theunit and flow upwards through twovertically stacked disposablemodules containing Odormix™ SPmedia.

L O W A I R F L O W O D O R & C H L O R I N E C O N T R O L S C R U B B E R SD R Y- M E D I A S C R U B B E R S

P U R A F I L V E N TS C R U B B E R

Used at municipal vent pipes.

Removal of odorous gases with a99.5+% gas removal efficiencyup to 150 cfm. These inexpensivepassive vent scrubbers are perfectfor small vent applications andcome standard with Purafil’sOdormix™ SP media which isdesigned to remove a broadspectrum of odorous gasesincluding mercaptans, hydro-carbons, hydrogen sulfide andgeneral sewer odors.

V E S S E L S C R U B B E R

Use at large headworks, full treatment plants, and large digesters. Designed for airflows from 8,000 to 20,000cfm, the Vessel Scrubber mitigates the highest contaminant loads.

The Vessel Scrubber is constructed of FRP and contains several thousand pounds of Purafil ESD dry-scrubbingmedia. Odors are drawn into the scrubber and through the media bed, where contaminants are chemicallyremoved. Clean air is discharged to the outdoors through a short vertical stack. Sample ports are easily accessible,and Purafil ESD offers complimentary media life analysis for as long as the system is in use.

T U B S C R U B B E R S Y S T E MUse at small headworks, large pump stations, in screening rooms, and at the discharge of biofilters.

The Tub Scrubber System is sized for airflows from 500 to 4,000 cfm and is an economical solution for controlling sewage odors.

O D O R A N D C O R R O S I O N O D O R A N D C O R R O S I O N A P P L I C AT I O N SA P P L I C AT I O N S

D E E P B E D S C R U B B E RUse at small headworks, large pump stations, in screening rooms, and at the discharge of biofilters.

The Deep Bed Scrubber is sized for airflows from 500 to 8,000 cfm and removes high concentrations ofodors in wastewater operations.

Optional Features:

• External FRP blower• Vacuum ports• Exhaust stack• Silencer• Explosion proof motor

PA R A L L E L B E D S C R U B B E RUse at large headworks and full treatment plants.

Designed for airflows from 8,000 to 40,000 cfm, the parallel bed scrubber mitigates the highestcontaminant loads.

Optional Features:

• Sound enclosure• Exhaust stack• Silencer• Explosion proof motor

Optional Features:

• Sound enclosure• Vacuum ports• Silencer• Explosion proof motor• Exhaust stack

Optional Features:

• Silencer• Explosion proof motor• Exhaust stack

M E D I U M T O L A R G E A I R F L O W O D O R A N D / O R C O R R O S I O N C O N T R O L D R Y- M E D I A S C R U B B E R S

Standard Features:

• Full charge of media manufactured by Purafil • Three-foot media bed• Fiberglass construction• Easily accessible fill and clean-out ports• Externally mounted, enclosed blower system• Damper control air inlet• Mist eliminator/prefilter

Standard Features:

• Aluminum or stainless steel construction• Full charge of Purafil ESD media• Enclosed blower system• Skid mounted• Up to four media bed sections for multiple contaminant challenges• Mist eliminator/prefilter

Standard Features:

• Multiple parallel media beds• Aluminum or stainless steel construction• Full charge of Purafil ESD media• Mist eliminator/prefilter• External FRP blower

Standard Features:

• Single- or dual-bed, fiberglass vessel• Full charge of Purafil ESD media• Media sampling ports on side and top of vessel• Externally mounted, belt driven, FRP blower section• Mist eliminator/prefilter

O D O R O D O R A P P L I C AT I O N SA P P L I C AT I O N SL A R G E A I R F L O W O D O R C O N T R O L

B I O L O G I C A L S C R U B B E R

ADVANCED BIOLOGICAL ODOR CONTROL SYSTEM

When two industry leaders join forces to combine bio and dry odor control technologies, you can expectthe best odor abatement system on the market! Purafil’s new BIOLOGICAL AIR TREATER (BAT) featuresthe most advanced proprietary biotrickling filter technology through an exclusive license with HoneywellProcess Solutions.

Combined industry-leading patented innovations provide:

• Low Maintenance & Pressure Drop

• Natural Bio-Trickling Microbial Process

• Smaller Footprint versus Biofilters

• Engineered Chemisorptive Polishing Media

• Low Operating Costs with Long-lasting Media Life

• Low Capital Costs with High Contaminant and Odor Removal

• Ease of Operation with Stable Biofilms Resistant to Fluctuations

• Unique Design with Patented Mixed-Media Support Prevents Plugging and Channeling

EXCLUSIVE SCIENTIFIC ODOR CONTROL PARTNERSHIP REMOVES THEFOLLOWING TYPICAL POLLUTANTS:

BAT TECHNOLOGYFEATURES :

• High surface area mixed-media withgreat mass transfer and distribution

• Layering mixed-media options for:

- Bulk Removal Stage

- Intermediate Stage

- Polishing Stage

• Uniform biofilms throughout bed

• Shock-resistant and stable biofilms

• Low cost construction materials

• High loading and removal capacities

• Adaptable for any microbial consortia

• Inorganics such as Hydrogen Sulfide and Ammonia

• Organics such as Hydrocarbons

• Sulfurics such as Mercaptans

• Nitrogenous Compounds such as Trimethylamine and Amides and Nitriles

• Oxygenated Alcohols, Aldehydes, Esters, Ethers, Ketones and Acids

• Aromatics such as BTEX’s (Volatile Organic Compounds; Benzene, Toluene,Ethylbenzene, and Xylenes) and Styrenes

• Aliphatics such as Butadiene and Hexane

BIOLOGICAL AIR TREATER MIXED-MEDIAThe patented technologies within Purafil’s Biological Air Treater provides a more efficient and cost-effective odor abatementand VOC treatment than other biological removal systems. The innovative BAT media consists of proprietary blends of speciallyformulated polyurethane foam cubes and polypropylene spacers that are uniquely supported for the immobilized bio-catalysts,resulting in higher concentration and distribution of biofilm compared to conventional and alternative biotrickling filter systems.

HONEYWELL’S PROPRIETARY MIXED-MEDIA PACKAGINGThe polyurethane foam cubes provide incredible surface area per unit volume to host microbial biofilms. Polypropylenespacers supply substantial void volume and structural integrity for tall beds, as well as enhanced mass transfer and excellenthydraulic dispersion and distribution. The unique mixed-media support allows for control of surface area and void space,with the result of reduced pressure drops across the deign bed. Ratios of foam-to-plastic vary with engineering design andapplication, and are used to control biofilm depth and pressure drop. BAT mixed-media beds can be used in biofilters toproduce highly-efficient bulk removal, intermediate removal, and polishing zones. Purafil’s BAT biofilter & biotrickling filtertechnology is amenable for any biofiltration application.

The polishing filtration in this high-tech system is Purafil’s proprietary Odormix™ SP dry media which has been specially engineeredto provide the highest amount of permanganate (the active ingredient) for increased capacity and will not off-gas like carbonproducts. Odormix™ SP Media demonstrates a higher working capacity for broad-spectrum oxidation of contaminants inactual field conditions, where multiple gas challenges are present.

PURAFIL’S BIOLOGICAL SCRUBBER VS.COMPETITORS’ WET CHEMICAL SCRUBBERThe technology transfer and license of Honeywell’s patented biological odor controltechnology has provided additional capabilities to Purafil’s line of clean air productsolutions. The Biological Air Treater (BAT) can be used for high airflow and concentrationlevels of hydrogen sulfide. The other typical competitive technology for thisapplication are wet chemical scrubbers. When comparing these two technologies with an airflowof 10,500 cfm (17,850 m3/hr) and a hydrogen sulfide concentrationof 143 ppm (200mg/m3) with standard temperature and pressure, the Purafil Biological Air Treater (BAT) is approximately $3.8 million less than acompetitive wet chemical scrubber over a 20 year time period.

O D O R O D O R A P P L I C AT I O N SA P P L I C AT I O N SL A R G E A I R F L O W O D O R C O N T R O L

B I O L O G I C A L S C R U B B E R M E D I A

STEP 1:Remove Caustic Material

STEP 2:Modify Existing Scrubber

STEP 3:Install Purafil Chlorosorb® Ultra Media

Remove the three-panel lid.Drain and dispose of liquid caustic from reservoir and reaction chamber.

Remove recirculation pump and pipe.

Remove and dispose of tower packing material.Cut out internal fiberglass walls and barrier between reaction chamber and liquid reservoir.

Install aluminum posts and secure to external fiberglass walls.Install perforated, aluminum media screens and secure to posts.

Install Purafil Chlorosorb Ultra Dry- Chemical Media between media screens.Replace three-panel lid and plug holes.

E M E R G E N C Y G A S S C R U B B I N G E M E R G E N C Y G A S S C R U B B I N G A P P L I C AT I O N SA P P L I C AT I O N S

P R E V E N T I N G T O X I C G A S R E L E A S E S

Facilities storing hazardous quantities of chlorine (Cl2), sulfur dioxide (SO2) or ammonia (NH3) must invest in emergency standbyequipment to prevent accidental chemical releases.

Purafil’s dry-chemical Emergency Gas Scrubber (EGS) is designed to remove the entire contentsof a fully loaded Cl2/SO2/NH3 cylinder in a worst-case release scenario. The EGS works withcylinders storing 150 pounds, 1 ton, 2 tons or 3 tons or more of Cl2/SO2/NH3 and dischargesless than 25 parts per billion.

Purafil manufactures two designs of the EGS:

1. Aluminum, multi-stage scrubber with horizontal airflow

2. Fiberglass vessel with vertical airflow

D R Y S C R U B B E R S V E R S U S W E T S C R U B B E R S

Dry scrubbers have several advantages over conventional wet scrubbers. For instance, dry scrubbers require significantlyless maintenance than wet scrubbers. They have just one moving part—a blower. No need to hassle with pumps, spraynozzles, or pH controls!

Dry scrubbers are much safer, too. Instead of using toxic liquid caustic, they neutralize gases with non-toxic dry-scrubbingpellets. These pellets are called media, and they permanently transform gases into harmless solids.

Unlike liquid caustic, dry-scrubbing media are immediately available for instantaneous reaction, regardless of the loadrate. With wet scrubbers, you have to measure the amount of gas fed into the scrubber.

Purafil’s dry emergency gas scrubber discharges less than 25 parts per billion, but wet scrubbers discharge 1-4 parts permillion. Call Purafil to help you transform your caustic wet scrubber to a safe dry scrubber with our patented retrofit plan!

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P U R A F I L’ S PAT E N T E D R E T R O F I T P L A N F O R W E T T O D R Y C O N V E R S I O N I S A S E A S Y A S 1 , 2 , 3 !

D R Y- S C R U B B I N G T E C H N O L O G Y

Instead of using toxic liquid caustic to neutralize gases, the EGS uses dry-scrubbing media. These media have indefinite shelf life - if they’renot used, you don't need to replace them. Purafil manufactures three kinds of media specifically for the EGS:

CSO™ to remove Cl2 and SO2

CHLOROSORB® ULTRA* to remove Cl2PURACARB® AM to remove NH3

Whether new or spent, all three media are:• non-toxic• non-hazardous• landfill disposable• UL Classified

Because we manufacture our own media, we have quality control and can guarantee availability and fastdelivery. We also offer value-added laboratory services to ensure optimal media and system performance.

* Chlorosorb® Ultra functions at -40° Fahrenheit

PURAFIL EMERGENCY GAS SCRUBBER

PURAFIL FIBERGLASS EGS

PURAFIL ALUMINUM EGS

POSI -TRACK TECHNOLOGY

MediaPAK modules features Purafil’s Posi-Track™ self-sealing technologywhich incorporates slanted tracking to support the modules via acorresponding angled notch in the modules’ frame. The weight of the moduleforces it against the channel and creates a positive seal with the tracking,virtually preventing air bypass and increasing system efficiency.

Monitoring air quality is an essential part of your corrosion control program. Purafil's OnGuard® 3000 (OG3) Monitor protectsyour electronics by measuring in real time the level of corrosion in your facility and transmitting the readings to your SCADAsystem. With the OnGuard, you can log cumulative or incremental data to detect and measure isolated corrosion-causing events and potential effects on equipment reliability.

The Purafil OG3 Monitor uses highly sensitive sensors to provide accurate and reliable corrosion monitoring within± 0.5-1% of full span. All measurements can be related to the International Society of Automation Standard 71.04-1985, which defines an environment as either G1, G2, G3, or GX based on the corrosion severity level and potentialeffects on equipment reliability.

Ideal for control rooms, motor control centers, rack rooms, and other areas where corrosion is a concern, theOnGuard allows for action to be taken before problems develop. In turn, this prevention increases the reliabilityof electronic and electrical instrumentation and reduces the cost of maintenance repairs.

Purafil’s OG3 can transmit real-time data to your SCADA system via a 4-20 mA output signal. In addition, the PurafilOG3 contains internal temperature and humidity sensors and can be battery-operated for data logging functionality.

PuraGRID™ F ILTER WITH THE Gr idBLOK™ TECHNOLOGY

Purafil now offers the PuraGRIDs within select engineered equipment as analternative or in conjunction with modules. This revolutionary filter is

designed to supply a large amount of chemical filtration mediawith minimal amount of pressure drop. The GridBLOK™ mediatechnology inside the PuraGRID filter offers a 50% greaterremoval capacity than traditional carbon products. Byutilizing this new filtration medium, you can reduce the size ofnew equipment while providing increased operationalperformance and energy savings. The performance of the

GridBLOK’s monolithic structure-based system is comparableto, and in some cases superior to, traditional packed-bed

media systems. Combine these media choices with lowpressure drop, and performance characteristics and younow have a superior option for controlling gaseouscontamination. The PuraGRID filter is now available in

five Purafil patented media formulations to controlodors, chlorine and corrosion.

THE GridBLOKMEDIA

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P O S I T I V E P R E S S U R I Z AT I O N U N I T A N DC O R R O S I V E A I R U N I T

Protects Control and Server Rooms500 - 4,000 CFM

P U R A F I L S I D E AC C E S S S YS T E MProtects HVAC System in Control Rooms

500 - 40,000 CFM

E L E C T R O N I C C A B I N E T U N I TProtects Control Panels

Less than 500 CFM

C O R R O S I O N E Q U I P M E N T F I LT R AT I O N S O L U T I O N S

MEDIAPAK™ MODULES

Purafil’s dry-scrubbing media is either bulk-filled within ourengineered equipment or inside our MediaPAK™ modules orPuraGRID filters which are then inserted into the equipment.MediaPAK modules are filled with your choice of Purafil dry-chemical media, which is non-toxic and non-hazardous assupplied.Pictured: Two half units which

make up one whole module.

M E D I U M T O L A R G E A I R F L O W C O R R O S I O N C O N T R O L D R Y- M E D I A S C R U B B E R S

C O R R O S I O N C O R R O S I O N A P P L I C AT I O N SA P P L I C AT I O N S

Purafil, Inc. • 2654 Weaver Way, Doraville, Georgia, 30340, U.S.A. • www.purafil.com • tel: (770) 662-8545 • (800) 222-6367ISO 9001:2008

© Purafil 2012 VMB-WW-03

Purafil.Inc @Purafil Purafil.Inc