| 
                 Major causes  | 
              
                 Subclasses  | 
              
                 Typical examples  | 
              
                 Control methods  | 
            
|---|---|---|---|
| 
                 Particulates  | 
              
                 Solids  | 
              
                 Dust, smoke, fumes, fly ash, Pb  | 
              
                 Sedimentation, centrifugation, impaction, filtration, fabric filters, electrostatic precipitator, wet scrubber  | 
            
| 
                 Liquids  | 
              
                 Mist, spray  | 
              ||
| 
                 Gases (organic)  | 
              
                 Hydrocarbons (HCs)  | 
              
                 Hexane, benzene, ethylene, methane  | 
              Adsorption, absorption, stripping, condensation, combustion | 
| 
                 Aldehydes and ketones  | 
              
                 Formaldehyde, acetone  | 
              ||
| 
                 Other organics  | 
              
                 Actone, chlorinated hydrocarbons  | 
              ||
| 
                 Gases (inorganic)  | 
              
                 Oxides of carbon  | 
              
                 CO, CO2  | 
              |
| 
                 Oxides of sulfur  | 
              
                 SO2, SO3  | 
              ||
| 
                 Oxides of nitrogen  | 
              
                 NO2, NO3  | 
              ||
| 
                 Other inorganics  | 
              
                 O3, H2S, HF, NH3 , Rn  | 
              
- 瀏覽次數:1847
 
      



