Since 1959, DeLoach Industries, Inc. has been a trusted leader in manufacturing water, wastewater, and odor control solutions and air emission control systems. Recognized as one of the oldest and most respected manufacturers in the U.S., we specialize in providing reliable solutions that help municipalities and industrial facilities manage odors, meet regulatory standards, and maintain safe working and community environments.
Odor control and air emission management are critical for municipal water and wastewater treatment plants, industrial manufacturing, and food processing facilities. Off-gases and contaminants can be hazardous, corrosive, or highly odorous. Industries and municipalities rely on expert solutions to remain compliant with strict U.S. regulations.
Understanding Odor Control and Air Emissions
Air emissions and odors are classified as off-gas contaminants, which can be dangerous or unpleasant. Common sources include:
- Municipal water and wastewater plants
- Industrial manufacturing[
- Agriculture
- Asphalt Production
- Chemical Manufacturing
- Food Processing
- Semiconductor Manufacturing
Odor control scrubbers are essential for capturing, treating, and neutralizing these contaminants. DeLoach can guide municipalities and industrial clients to ensure safe, compliant, and cost-effective solutions.
Types of Odor Control Scrubbers
Vertical-Type Packed Scrubbers
Vertical scrubbers, commonly called packed towers, are designed to treat air contaminants efficiently. Contaminated air enters at the bottom, usually via a mechanical blower, and rises through a media bed where chemical or biological processes remove odors and hazardous gases.
Materials: Steel, stainless steel, fiberglass, or PVC
Key Considerations: Media bed depth, tower diameter, and chemical recirculation rates are tailored to contaminant concentration and airflow.
Municipal water and wastewater facilities benefit from vertical scrubbers because they provide reliable municipal odor control and industrial odor control. Learn more about vertical odor control scrubbers.
Chemical Odor Control Scrubbers
Chemical scrubbers use a recirculation system and chemical feed to treat odorous air. The chemical solution flows downward over the media bed, interacting with the upward-moving contaminated air.
- Reaction: Some contaminants chemically react with the solution to convert into less harmful compounds.
- Absorption: Other contaminants are absorbed into the chemical solution.
Common types include single-stage chemical scrubbers, dual-stage (or “dual pass”) scrubbers, and hydrogen sulfide (H2S) scrubbers used in industrial and municipal water treatment.
DeLoach can help municipalities assess off-gas streams and recommend the ideal chemical scrubber design for safe and compliant operations.
Horizontal or Cross-Flow Scrubbers
Horizontal scrubbers are ideal for industrial facilities with height restrictions. Air moves sideways through the media bed, interacting with the treatment chemicals before exiting. Horizontal scrubbers are effective for moderate contaminant concentrations, while vertical towers handle higher concentrations.
Industrial vs. Biological Odor Control
Industrial Chemical Odor Control
Industrial chemical scrubbers are tailored for high contaminant loads and critical industrial processes. Applications include:
- Hydrogen sulfide removal in municipal and industrial water treatment
- Fume scrubbers for semiconductor manufacturing
- Odor mitigation in food processing plants
DeLoach can help industrial clients evaluate their processes, design custom chemical scrubbers, and optimize operations to reduce odors and harmful emissions.
Biological Odor Control Scrubbers
Biological scrubbers use active bacterial colonies to consume contaminants like H2S and VOCs. The bacteria are cultured on a media bed and fed nutrients via a recirculation system.
Advantages include low chemical usage, minimal operating costs, and effective treatment for consistent air streams.
DeLoach Industries experts work with municipalities and industrial facilities to design biological scrubbers tailored to specific gas streams and operating conditions.
How DeLoach Industries Professionals Help
Selecting and operating the right odor control scrubber can be challenging. DeLoach Industries professionals provide municipalities and industrial clients with:
- Site assessments to understand sources, concentrations, and gas stream characteristics
- Custom design for vertical, horizontal, chemical, and biological scrubbers
- Installation & startup support for efficient operations
- Training & maintenance guidance to prevent operational issues
- Smart integration with AI-enabled scrubbers for predictive maintenance
Our team ensures safe, compliant, cost-effective municipal and industrial operations and odor control solutions.
Smart Odor Control Scrubbers: Integrating AI
Modern facilities benefit from AI-enabled odor control systems, which automatically order chemicals, notify operators of operational changes, and prevent costly plant shutdowns. For municipalities, this ensures uninterrupted water treatment and odor-free communities. For industrial facilities, it prevents production disruptions and reduces operational costs.
Comprehensive Odor Control Solutions
DeLoach provides a full range of odor control systems for municipalities and industrial clients:
- Odor Control Scrubbers
- Biological Scrubbers
- Chemical Scrubbers
- Particulate filtration
- Prepackaged filtration skids
- Custom tank covers
- Fume and dust control systems
- Portable pilot equipment
- Containerized treatment systems
- Hydrogen sulfide wet and dry scrubbers
System Configurations: Vertical and horizontal flow, skid-mounted or slab installation, with flow capacities up to 150,000 SCFM.
DeLoach offers comprehensive support to municipal and industrial clients worldwide, encompassing design, installation, startup, training, and long-term maintenance.
Why Municipalities and Industrial Facilities Choose DeLoach Industries
Our expertise ensures safe and compliant operations for municipal and industrial air emissions, as well as tailored chemical and biological scrubber systems. We also integrate innovative technology for predictive maintenance and provide global shipping, installation, and ongoing support. We partner with municipalities and industrial operators to efficiently solve odor and air emission challenges, reducing costs and safeguarding human health and the environment.
For more information about odor control and air emission systems for municipalities and industrial facilities, contact DeLoach Industries today.


