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International AAF Offices: Emmen (NL), Glika Nera (GR), Brussels (B), Cramlington (GB), Oberhausen (D), Dubai (UAE), Helsinki (Fin), Istanbul (TR), Lisbon (P), Louisville, Ky (USA), Madrid (E), Mexico (Mex), Mozzate-Co (I), Paris (F), Bangalore (IND), Riyadh (KSA), Shah Alam (Mal)

Suzhou, Shenzhen (PRC), Singapore, Taiwan, Vienna (A)

AAF Agents: Johannesburg (RSA)

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AAF has a policy of continuous product research and improvement and reserves the right to change design and specifications without notice.

© 2012 AAF International

Applications

Gas-Phase Filtration SolutionsQuick Guide on capabilities, systems and applicationsfor the removal of gaseous contaminants.

AAF has the expertise to custom design the right gas-phase solution for the specific application needs. Which system will be the most suitable will depend on the application characteristics, the target contaminants to  filter  and  their  concentration  levels.  There  is  no  standard  answer, 

as  each  situation  is  unique.  Your  local AAF  sales  office  can  advise and support you  in choosing  the most effective solution with  the right chemical media, delivery systems and equipment.

The Right AAF Gas-Phase System

Achieving a high level of Indoor Air Quality is important for human health and for the preservation of valuable objects. In large public areas like airports, schools, museums or hotels, it needs to be assured that people 

can always breathe healthy air and that valuable cultural assets remain untouched from hazardous contaminants in the air. 

Indoor Air Quality

Museums. With museums often being situated in busy urban environments, controlling gaseous contaminants is a fundamental challenge for protecting priceless collections of artifacts, historical assets, artwork and literature. By maximizing the life of these objects, we essentially protect our heritage.

Damage to collectibles can be caused by gaseous pollutants such as Ozone, Formaldehyde or Sulfur dioxides. Without proper protection,  these may  lead to adverse health effects on visitors and employees, and premature aging of valuable papers, textiles, photographs and paintings. 

Gaseous  contaminants  can  have  a  big  impact  on  critical  processes within  applications  such  as  refineries,  the  micro-electronics  and hospitals. Gases in the environment can cause corrosion of important 

equipment  and  process  control  areas. When  not  controlled  properly, costly repairs and downtimes could be the result. 

Corrosion Control

Healthcare.  Healthcare  equipment  and  instrumentation  in  treatment  or  emergency  rooms  are  major investments  for  hospitals  that  need  protection  from  hazardous  gaseous  contaminants.  Areas  of  concern may  be HVAC units,  control  rooms  and  electronic  instrumentation,  diagnostic  equipment  and  x-ray machines. 

High-quality  gas-phase  filtration  can  reduce  corrosive  gases,  such  as  Nitrogen  dioxide  and  Sulfur  dioxide,  in order to protect health care facilities from potential failures caused by corrosion. Not only does it assure a proper functioning of the health care processes with less risk of repairs and downtime, it also directly contributes to the quality of patient treatments.

Odorous  gases  can  arise  from  many  different  sources  such  as restaurants, waste treatment, industrial processes and agriculture. If such 

gases are not properly filtered unpleasant odours can persist, causing unpleasantness  to  employees,  visitors  and  businesses  in  the  area. 

Odour Control

Wastewater Treatment. For wastewater  treatment  facilities, odor control  is constantly evolving because of  the increasing amount of chemicals used by industries worldwide. Odors are generated in varying degrees throughout a wastewater treatment process. 

The main odor-generating areas are pump stations, head works, clarifiers, digesters, aeration basins, lagoons and sludge handling areas. Examples of odors  that are associated with  these processes  include Hydrogen sulfide, Ammonia, Sulfur dioxide and Amines. Effectively eliminating such odorous gases from the air will result in higher health and comfort levels for people in the area.

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AI

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The need for clean air has never been as prominent as in today’s highly industrialized and densely populated world. The outside air has become increasingly  polluted,  whereas  today’s  technologically  advanced processes  and  the  increased  amount  of  time  that  we  spend  indoor require more advanced clean air solutions than ever before.

Next to particles, gaseous contaminants are a significant contributor to air pollution and can have a big impact on human health and process performance.  Gaseous  contaminants  can  arise  from  many  different sources;  from  odorous  sources  (like  waste  treatment  facilities  or restaurants),  corrosive  sources  (like  industry emissions or  cleanroom chemicals)  or  toxic  sources.  For  effective  removal  of  these  gaseous contaminants,  the gas-phase  filtration products of AAF offer  the  right solution.

Already  since  1921,  AAF  has  gained  significant experience  in air  filtration by offering a wide variety of 

products  for  removing  and  controlling  both  particulates  and  gaseous contaminants. For  reducing or eliminating  the gaseous contaminants, AAF has developed the innovative SAAF™ product line. It allows AAF to offer unique and effective gas-phase filtration concepts, tailored to the specific situation.  It supports AAF  in  its ambition  to offer best-in-class clean air to the world.

Indoor Air Quality With the increased focus on the health impact of air pollution, achieving an optimal Indoor Air Quality (IAQ) is extremely important. The EN 13779 is  the  new  European  standard  for  ventilation  and  room  conditioning systems  in  non-residential  buildings,  and  is  now  a  legally  accepted standard in all countries of the European Union. 

EN 13779 specifies both outdoor air and indoor air quality, resulting in recommendations  for  particulate  and  gas-phase  filtration.  Taking  into account the outdoor air conditions, it sets out to achieve a comfortable and healthy indoor air quality  in all seasons of the year at acceptable installation and operating costs.

According to EN 13779, the outdoor air  is categorized in three levels, from ODA 1 (pure air which may be only temporarily dusty) to ODA 3 (very high concentrations of gaseous pollutants and particulate matter). The indoor air quality, on the other hand, is classified in four levels, from IDA 1 (high indoor air quality) to IDA 4 (low indoor air quality). When the pollution  level of  the outdoor air  is classified, EN 13779 recommends the  right  air  filtration  solution  for  the  preferred  indoor  air  quality,  as summarized in the table below.

The SAAF™ product line has been developed by AAF to offer effective gas-phase filtration solutions for removing gaseous contaminants from the air. The diversity of  its customer’s air filtration requirements has given AAF the expertise to provide products, systems and supporting tools,  based  on  a  broad  industry  perspective.  In  combination  with superior knowledge from a wide scope of applications, customers are guaranteed to receive top quality products, services and results.

 SAAF™ Technical ServicesThe SAAF™ Technical Services Group has  the  instrumentation  and training  to  perform  comprehensive  evaluations  and  environmental assessments. All  tests  are  carried  out  and  correlated  to  applicable standards. Evaluations include particulate contamination assessments, gaseous contaminant assessments, humidity assessments, product life  cycle  assessments,  room  integrity  verification,  and  sealing  and HVAC circuit checks.

SAAF™ Tech ToolsSAAF™ Tech Tools  is  the filtration  industry’s most sophisticated and complete decision-sciences software for configuring clean air solutions to remove gaseous contaminants.  It  is used by AAF’s specialists  to select appropriate media, delivery systems and equipment options by using  the  application  specific  data  as  input.  Based  on  its  thorough experience, AAF is also able to benchmark from a vast library of pre-configured applications and typical concentrations. The end result is a clear, comprehensive and tailor made offer for gas-phase filtration that includes all the details needed for successful project execution.

SAAFDetect™

SAAFDetect™  is  a  Visual  Air  Quality  Indicator  that  provides  an easy,  visual  indication  of  gas  presence  and  an  estimate  of  gas concentrations.  It  can  be  used  to  evaluate  the  need  for  gas-phase  filtration  solutions,  estimate  existing  filter  efficiency, or  to  point  toward  the  need  for  more  analytical  methods. Building owners or facility managers can use this tool to perform initial evaluations.  The  reports  state  possible  alarms  related  to  irritation, degradation of materials, corrosion of electronics and odors.

SAAF™ Reactivity Monitoring CouponsAAF’s  SAAF™  Reactivity  Monitoring  Coupons  (RMCs)  consist  of copper  and  silver  coupons  mounted  on  a  plastic  panel.  RMCs function  by  reacting with  the  environment  (gases,  relative  humidity and temperature) to form various corrosive films. This technology is used to investigate the condition of control rooms or other protected environments  in  industrial  facilities  such  as  pulp  and  paper  mills, petrochemical  refineries  and  chemical  plants.  AAF’s  Air  Quality Analysis  Report  clearly  documents  the  findings  from  the  analysis of  the coupons, so  that  the appropriate measures can be  taken  for further improvement of the air quality.

Please contact your local AAF sales office for more information about the SAAF™ tools.

The  SAAF™  media  and  delivery  options  can  be  combined  with several  possibilities  in  equipment,  offering  a  total  solution  for the  protection  of  both  particulate  and  gaseous  contaminants. The  equipment  solutions  vary  from  PORTA-Scrubbers,  Deep 

Bed  Scrubbers  (DBS)  and  Air  Purification  Systems  (APS), to  Side  Access  Housings  (SAH)  and  Front  Access  Housings (FAH)  in  which  complete  cassettes  with  pre-filled  media  can  be placed  together  with  particulate  pre-  and  final  filters  from  AAF.

Please consult www.aafeurope.com for more product details on the media, delivery and equipment options that AAF offers.

Gas-Phase Filtration Solutions AAF Capabilities and Support AAF System Guide

The particulate filters from AAF are classified according to EN 779:2002. Please refer to www.aafeurope.com for more details on EN 779:2002 and EN 13779, including its classification measures of ODA and IDA.

What  the  table  above  perfectly  demonstrates  is  that  when  the  outdoor air has  the highest  level of pollution  (ODA3), gas-phase filtration  (GF)  is essential for achieving the best Indoor Air Quality. AAF offers a complete 

package  of  gas-phase  filtration  products,  combined  with  innovative supporting  tools,  which  bring  the  right  solutions  for  the  right  protection against   gaseous contaminants. The end result being, clean air for everyone. 

T E C H N O L O G Y™

SAAF™ Reactivity

Monitoring Coupon report.

AAF offers a broad portfolio of gas-phase filtration solutions that can be used for multiple applications. It can be composed of several options in 

media, delivery systems and equipment. The System Guide below shows the comprehensive overview in AAF options to choose from.1)

Outdoor Air Quality IAQ (Indoor Air Quality)

Pollution level IDA 1 (High) IDA 2 (Medium) IDA 3 (Moderate) IDA 4 (Low)

ODA 1 F9 F8 F7 F5

ODA 2 F7 + F9 F6 + F8 F5 + F7 F5 + F6

ODA 3 F7 + GF + F9 F7 + GF + F9 F5 + F7 F5 + F6

AmAir® / CF AstroSorb® VariSorb® XL SAAF Canister™ SAAFCassette™

SAAF™ PORTA-Scrubber SAAF™ DBS SAAF™ APS (RU / PRU) SAAF™ SAH SAAF™ FAH

SAAFDetect™ Visual Air Quality Indicator.

2) SAAFBlend GP™ media is a composition of SAAFOxidant™ media with SAAFCarb™ media. SAAF Blend™ media can be customized to the application requirements.

1) This table shows the most typical target contaminants per media option and is therefore non-exhaustive. Please consult your local AAF sales office for the complete details.

Media optionsDelivery options

Typical target contaminantsAmAir® / CF AstroSorb® VariSorb® XL SAAF

Canister™SAAF

Cassette™

SAAFCarb™ Nitrogen dioxide (NO2), Hydrocarbons (VOCs), Chlorine (Cl2), Ozone (O3)

SAAFCarb™ MA Plus Hydrogen sulfide (H2S), Sulfur dioxide (SO2), Chlorine (Cl2)Hydrocarbons (VOCs)

SAAFCarb™ MA - HT Hydrogen sulfide (H2S), Sulfur dioxide (SO2), Chlorine (Cl2)Nitrogen dioxide (NO2)

SAAFCarb™ MB Ammonia (NH3), Amines (R-NH)

SAAFCarb™ MC Chlorine (Cl2)

SAAFCarb™ MM Mercury (Hg)

SAAFCarb™ MS Hydrogen sulfide (H2S), Sulfur dioxide (SO2)

SAAFOxidant™ Sulfur dioxide (SO2), Hydrogen sulfide (H2S), Nitric oxide (NO), Formaldehyde (CH2O), Aldehydes and organic acids

SAAFBlend™ GP 2) Formaldehyde (CH2O), Hydrocarbons (VOCs), Hydrogen sulfide (H2S), Nitric oxide (NO), Sulfur dioxide (SO2)