List basing on gas types Organic solvent (non-water soluble: toluene, etc.) Catalytic combustion deodorizer Direct combustion deodorizer Concentrated (rotary) deodorizer Concentrated (fixed) deodorizer Activated carbon adsorption device Wet scrubber Small VOC deodorizer Organic solvent (water-soluble: ethanol, IPA) Catalytic combustion deodorizer Direct combustion deodorizer Concentrated (rotary) deodorizer Concentrated (fixed) deodorizer Solvent recovery device Activated carbon adsorption device Small VOC deodorizer Organic nitrogen compounds (HCN, NH3, etc.) Catalytic combustion deodorizer Direct combustion deodorizer Wet scrubber Small VOC deodorizer Nitrogen oxide (No, Nox) Catalytic combustion deodorizer Wet scrubber Small VOC deodorizer