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Presentation transcript:

ncmodorcontrol.com

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 ncmodorcontrol.com

Public Perception of Odors From Solid Waste Facilities ncmodorcontrol.com

Public Perception ncmodorcontrol.com

Public Perception ncmodorcontrol.com

Public Perception ncmodorcontrol.com

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 ncmodorcontrol.com

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 (0.0047 ppm) - Ethyl Mercaptan (0.00019 ppm) - Dimethyl Sulfide (0.1 to 0.01 ppm) ncmodorcontrol.com

Visualizing Movement of Fugitive Dust Can Help Us Understand Movement of Odors ncmodorcontrol.com

Visualizing Fugitive Dust can help Us Visualize Odors ncmodorcontrol.com

A Typical Landfill Setting ncmodorcontrol.com

Dealing with Large Volumes, Low Concentrations of Odors ncmodorcontrol.com

Dynamics of Odor Plume Movement ncmodorcontrol.com

Dynamics of Odor Plume Movement ncmodorcontrol.com

Odor Plume Height vs Distance ncmodorcontrol.com

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 ncmodorcontrol.com

Sources of Odors – Working Face ncmodorcontrol.com

Sources of Odors – Composting ncmodorcontrol.com

Sources of Odors – Fugitive Landfill Gas ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Continuously Monitor Odors and Wind ncmodorcontrol.com

Layout of a Typical Monitoring System ncmodorcontrol.com

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 ncmodorcontrol.com

Odor Control Systems Perimeter Misting Systems ncmodorcontrol.com

Odor Control Systems Perimeter Misting Systems ncmodorcontrol.com

Odor Control Systems Perimeter Vapor Systems ncmodorcontrol.com

Odor Control Systems Perimeter Vapor Systems ncmodorcontrol.com

Odor Control Systems Misting vs Vapor Systems ncmodorcontrol.com

Odor Control System Source Based Systems ncmodorcontrol.com

Odor Control Systems Source Based Systems ncmodorcontrol.com

Odor Control Systems Source Based Systems Source: Dust Boss ncmodorcontrol.com

Integrating the Odor Control System ncmodorcontrol.com

Integrating the Odor Control System ncmodorcontrol.com

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 ncmodorcontrol.com

Questions? Contact: Ray Kapahi Tel: 916-687-8352 Cel: 916-806-8333 E-Mail: ncmodorcontrol.ray@gmail.com