FAQ – VOC Destruction Odor Control Equipment Commercial Odor Control Municipal Sewage Treatment

Question 1: Describe the air flow configurations in an Air Phaser system.

Depending on what type and concentration of VOC and/or odor is being treated, an

Air

Phaser

system can be configured one of 3 ways. The first way is called an Injection

configuration. The second way is Flow Through and the third way is a Hybrid

configuration.

Question 2: Describe the Injection configuration.

In the Injection arrangement, Air

Phaser

draws in ambient air into it’s NTP field,

energizes

the air to produce the reactive oxygen species and then immediately injects

the activated

species into the process duct to treat the pollutants. This is the

recommended

configuration where a large air volume of very dilute contaminants must

be treated and

the lesser effectiveness of injection is ok.

Question 3: Describe the Flow Through configuration.

The Flow Through system passes all contaminated air through the NTP field. This has

the maximum efficiency as all electrical bombardment, electrical and ionic forces, with

the shortest lived and most active oxygen species and radicals all participate in the

oxidation and reduction of the pollutants. Note that this is the preferred configuration for

difficult to treat pollutants and that it is possible to combine a number of NTP cells in

series and series parallel flow if need be.

Question 4: Describe the Hybrid configuration.

The Hybrid arrangement draws some polluted air into the NTP

field

and injects that

activated

air into the process air to effect treatment of all the air. A modification of this

might draw

inside plant air that is odorous into the NTP field for activation and injection

into the

process. This helps keep the factory’s fugitive emissions down while still treating

the

process air.

Question 5: Describe some operation possibilities with Air Phaser

The NTP field in Air

Phaser

has a catalyst as an integral part of the NTP field cells, which

can

be chosen to match the application, and it has an outlet catalyst which also can be of

the

most beneficial type for the pollutant being treated. The NTP field strength of Joules /

Liter of pollutant volume and/or Joules / cm2 cell area can be varied as needed to obtain

the destruction efficiency desired. Because all cell materials are either alumina ceramic

or metal, exothermic reactions are permissible with exit temperatures up to 450 C.

Question 6: Describe the Ozone considerations with AirPhaser

The AirPhaser NTP field creates a range of reactive oxygen and hydroxyl species through

its electron bombardment, electrical potential and ionic forces. Ozone, is just one of the

many species created though it is one of the longest lived of the species. When

commissioning systems for organic VOC control such as odors, the NTP field is set to

just strong enough to create just enough oxygen radicals to destroy the odors with a

little

excess ozone that does not exceed the US EPA emission guideline of 0.08ppmv. An

analyzer at the system outlet can be used in feed back mode to modulate the NTP field

strength in case of varying VOC/odor load. For non-organic VOC’s such as paint and

solvent fumes when a much stronger NTP field is needed and significant ozone results,

an ozone destruct catalyst system is incorporated prior to releasing the treated air to the

environment.