Managing Dust and Air Quality in Waste & Recycling Facilities

Introduction

Waste and recycling facilities handle a constantly changing mix of materials. From paper and cardboard to metals, plastics, wood, and other recovered materials, processing these materials can generate significant amounts of airborne dust and particulate.

Without effective dust control, these contaminants can affect facility cleanliness, equipment performance, worker environments, and overall operations. An effective waste and recycling dust collection system can help capture airborne particulate at or near its source and support cleaner, more efficient processing areas.

Where Does Dust Come From in Waste & Recycling Facilities?

Dust can be generated at nearly every stage of the waste and recycling process. Material transfer, sorting, shredding, crushing, conveying, dumping, and screening can all release particulate into the surrounding environment.

Common dust-generating areas include:

• Shredders and size-reduction equipment
• Conveyors and transfer points
• Material sorting lines
• Crushers and grinders
• Loading and unloading areas
• Baling operations
• Material recovery facilities (MRFs)
• Scrap and metal processing operations

Because material streams can vary considerably, selecting the right industrial dust collection equipment requires an understanding of the dust characteristics, process conditions, airflow requirements, and potential hazards associated with the application.

Choosing the Right Dust Collector for Recycling Applications

There is no single dust collection technology that is appropriate for every waste or recycling operation. Dust characteristics such as particle size, concentration, moisture content, abrasiveness, and combustibility can influence equipment selection.

Dry Dust Collection

Dry dust collectors use filter media to separate airborne particulate from the process airstream. They can be an effective choice for many recycling applications where particulate can be safely collected and removed in a dry form.

We offer several configurations designed to address different industrial dust collection requirements. Depending on the application and required airflow, systems such as the AIVY Compact can provide efficient particulate collection while helping facilities make effective use of available installation space.

For applications requiring cartridge filtration, the PulsePak Prime is another option for controlling airborne particulate generated by industrial processing operations.

When evaluating a dry collector, factors including dust loading, filtration efficiency, filter cleaning, maintenance access, and collected-material handling should all be considered.

Combustible Dust Considerations

Waste and recycling facilities can encounter combustible particulate depending on the materials being processed. Certain plastics, paper, wood, metals, and other materials can create combustible dust hazards under the right conditions.

Facilities should understand the characteristics of their dust and evaluate potential hazards as part of their dust collection strategy. A Dust Hazard Analysis (DHA) can help identify where combustible dust hazards may exist and support decisions regarding appropriate safeguards and dust collection equipment.

Equipment selection should consider applicable codes and standards as well as the characteristics of the specific application. Where combustible dust is present, appropriate fire and explosion protection measures may also be required.

Controlling Dust at the Source

Effective dust collection is not only about selecting the collector itself. The overall system should be designed to capture particulate as close as practical to where it is generated.

Strategically positioned hoods, properly sized ductwork, sufficient airflow, and appropriate dust collection equipment all contribute to system performance.

For example, a recycling facility may require dust capture at multiple conveyor transfer points, shredders, sorting stations, or other processing equipment. Understanding how those sources interact is important when determining system airflow and collector capacity.

Why Dust Collection Matters in Waste & Recycling

A properly designed dust collection system for a recycling facility can provide benefits beyond simply removing visible airborne dust.

Effective dust control can help:

• Reduce airborne particulate throughout processing areas
• Improve general facility cleanliness
• Limit dust accumulation on equipment and surrounding surfaces
• Support equipment reliability and maintenance efforts
• Improve visibility around dusty processes
• Help facilities manage potentially hazardous dust
• Support a cleaner working environment

The key is selecting equipment based on the actual process rather than treating every dust application the same.

Finding the Right Air Pollution Control Solution

Waste and recycling operations can vary significantly depending on the materials processed, equipment used, facility layout, and operating conditions. The dust collection system should reflect those differences.

AAF International’s Air Pollution Control team works with industrial facilities to evaluate application requirements and determine appropriate dust collection technologies. From AIVY dry dust collectors and PulsePak Prime  multiple technologies are available for addressing particulate generated throughout waste and recycling operations.

Whether the challenge involves shredding, conveying, sorting, crushing, or material transfer, understanding the dust and process conditions is the first step toward selecting an effective system.