1. ncmodorcontrol.com

2. What We’ll Cover Today
Public Perception of Odors from Solid Waste Facilities
Nature of Odors from Solid Waste Facilities
Why Controlling Odors is So Difficult
Dynamics of Odor Movement and Dilution
Components of an Effective Odor Control System
Questions/Comments
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3. Public Perception of Odors From Solid Waste Facilities
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4. Public Perception
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5. Public Perception
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6. Public Perception
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7. Nature of Odors
1) Odors can be categorized by their character (rotten egg, pungent, sweet, etc), their strength (parts per million) and their duration. 2) Odors can also be classified as being Fugitive or Point Source(s). Most odors at Landfills are Fugitive 3) Odors can be transient or steady-state
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8. Why Controlling Odors is So Difficult ?
The fugitive nature of odors makes them difficult to intercept and treat
The odors dilute in response to local winds and vary with atmospheric conditions (wind speed, stability). The dilution involves large air volumes
Odorous sulfur containing compounds, such as dimethyl sulfide have very low threshold of odor perception
- Hydrogen Sulfide ( ppm)
- Ethyl Mercaptan ( ppm)
- Dimethyl Sulfide (0.1 to 0.01 ppm)
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9. Visualizing Movement of Fugitive Dust Can Help Us Understand Movement of Odors
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10. Visualizing Fugitive Dust can help Us Visualize Odors
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11. A Typical Landfill Setting
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12. Dealing with Large Volumes, Low Concentrations of Odors
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13. Dynamics of Odor Plume Movement
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14. Dynamics of Odor Plume Movement
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15. Odor Plume Height vs Distance
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16. Elements of an Odor Control Strategy
1) Identify Odor Sources - Working Face - Fugitive Landfill Gas - Compost Windrows 2) Monitor Odors at your Facility 3) Treat Odors Near the Source
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17. Sources of Odors – Working Face
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18. Sources of Odors – Composting
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19. Sources of Odors – Fugitive Landfill Gas
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20. Continuously Monitor Odors and Wind
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21. Continuously Monitor Odors and Wind
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22. Continuously Monitor Odors and Wind
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23. Continuously Monitor Odors and Wind
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24. Continuously Monitor Odors and Wind
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25. Continuously Monitor Odors and Wind
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26. Layout of a Typical Monitoring System
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27. Odor Control Systems
For fugitive odors, there are two categories of odor control systems:
1. Perimeter Systems
- High pressure water based misting systems
- Low pressure vapor systems
2. Source Based Systems
- Mostly water based, high volume fan driven systems that direct neutralizer at the odor source
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28. Odor Control Systems Perimeter Misting Systems
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29. Odor Control Systems Perimeter Misting Systems
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30. Odor Control Systems Perimeter Vapor Systems
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31. Odor Control Systems Perimeter Vapor Systems
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32. Odor Control Systems Misting vs Vapor Systems
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33. Odor Control System Source Based Systems
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34. Odor Control Systems Source Based Systems
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35. Odor Control Systems Source Based Systems
Source: Dust Boss
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36. Integrating the Odor Control System
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37. Integrating the Odor Control System
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38. Key Points
Monitor both odors and wind at your site. This includes frequent staff patrols on-site and off- site
Control odors at or near the source
The greater the distance between your odor controls and the source, the lower the effectiveness
Consider a two tier odor control system (Source and Perimeter Based)
The delivery system of odor neutralizers is as important as the neutralizer
Odor control system must be dynamic and respond to changing levels of odor emission
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39. Questions? Contact: Ray Kapahi Tel: 916-687-8352 Cel: 916-806-8333