Activated Carbon Odor Control Unitis a compact,modular canister designed to remove unpleasant hydrogen sulfide and methyl mercaptan odors venting from gravity sewer manholes.The unit comes equipped with HONGYA Granular Activated Carbon that is a high-activity,chemically-treated activated carbon specially designed for use in odor control applications.In addition,the unit is effective in absorbing other select organics as well.

• Eliminates unpleasant odors—By removing hydrogen sulfide and methyl mercaptan from the airstream,the unit prevents unpleasant odors from entering the atmosphere around manhole covers.

• No Energy Requirments—There are no mechanical parts.Unpleasant odors are removed by adsorption from air stream as the gravity sewer breathes through the manhole vent.

• Non-Corrosive—All the canister components are manufactured from industrial plastics that have proved reliability in this type of service.

• Easy Installation—Modular components permit easy assembly into existing manholes.

• Passive Odor Control—By using the positive pressures inside the sewer line being treated,contaminated air passes up through the unit where the objectionable chemicals are trapped and stored in the arbon,allowing a purified air stream to vent through the top of the canister into the atmosphere.The pressure or surges of pressure within the sewer lines being vented is sufficient to overcome the pressure drop across the carbon bed.

• Cost/Effective—The odor control unit is a relatively simple carbon adsorption system which offers a high degree of odor control and performance at a moderate cost.

• Replacement carbon—When odor breakthrough is detected,only the carbon needs to be replaced.Twenty-pound refill bags are available from HONGYA Carbon.

• Maintenance Free—HONGYA odor control units have no moving parts and once installed,they provide continuous control of vented emissions with virtually no attention.

• Adaptability—Standard canisters,available for immediate shipment,will fit existing round manholes in sizes ranging from 16” to 37” diameters.

• Custom Flexibility—Special sizes available on request,with delivery in six weeks or less.

The HONGYA odor control unit is supplied with 20 pounds of HONGYA carbon that has twice the capacity for H2S as an equal quality of standard vapor phase carbons and other impregnated adsorbents.

In adition to its enhanced capacity for H2S and methyl mercaptan,HONGYA carbon has a high adsorptive capacity for other odor-causing compounds due to its high internal surface area.Its removal efficiency and capacity for these other materials will vary depending on their physical properties and concentrations.