1. Air Pollution Abatement
Chapter 27
PPT 110

2. Pollution Abatement Programs
Capital Intensive
Significant Operating Cost
Government
Environmental protection
Acceptable level of discharge

3. Manufacturing Processed
Approx. 20% of measurable air pollution
Highly visible
Characteristic Odors

4. What Is
Air pollution is “the presence in the ambient atmosphere of substances put there by the activities of man in concentrations sufficient to interfere directly or indirectly with his comfort, safety, or health, or with the full use and enjoyment of his property”
Receptor responds unfavorably to an airborne agent
Effect on health, economics, nuisance, or aesthetic

5. Air Quality

8. What do we do Control of Emissions Measure vs detection limits
Gaseous
Particulate
Measure vs detection limits
Discharge source vs ground level

9. Major Air Pollutants Fine Particulates Course Particulates
Sulfur Oxides – SOx
Nitrogen Oxides – NOx
Reduced Sulfur Gases – TRS
Volatile Organic Compounds – VOC’s

10. Kraft Mill Odors Rotten Egg Rotten Cabbage Vegetable Sulfides
Monitor/Test for Odors
Source sampling
Ambient sampling

11. Odor Control TRS Collection and Destruction Low Odor Recovery Boilers
Oxidizing Lime Mud
Spill Monitoring and Collection

12. Control of Sulfur Keep it in the Recovery Cycle
Proper Operation of Furnace
Load, air, excess oxygen, sulfidity level
Black liquor solids, inerts low, disperse spray
High turbulence
Incinerate in Lime Kiln

13. Air Pollution Control Equipment
Gases and Vapors
Catalytic Combustion
Incineration
Adsorption – collection onto the surface of a solid
Wet Scrubber
Particulates
Mechanical collection
Fabric filtration
Dry scrubbing
Electrostatic Precipitator
Hybrid Precipitator/Scrubber