12,500 CFM Wet Scrubber for Cl2, HCL, & SO2 removal from RTO exhaust, FRP construction

Leader in Air Pollution Control Systems

Does your plant need to reduce emissions?

  • Acid & alkaline gasses

  • Particulate matter – PM 10/2.5

  • Condensables, aerosols, & opacity

  • VOCs, odor, & fumes

  • Oil, mist, & dust

Monroe Environmental designs and manufactures custom air pollution control systems and equipment for eliminating and minimizing a wide spectrum of air pollutants and regulated emissions from virtually all types of sources and applications.

Have technical questions about air pollution control systems?

Ask a Monroe Expert

Monroe’s Air Pollution Control Systems & Equipment

Chemical Storage Tank Vapors: 30,000 CFM Horizontal Packed Bed Scrubber with polypropylene construction to remove chemical fumes emitted from acid–dip tanks at a semiconductor manufacturing facility. Dual–train exhaust ductwork with automated dampers and FRP fans provides maximum control over the scrubbing process.

Packed Bed Wet Scrubbers

Monroe Venturi Scrubber and Cyclonic Separator exhausting a lime kiln.

Venturi Wet Particulate Scrubbers

Stainless steel Multi-Stage Scrubbing System with Packed Bed Scrubbers, Venturi, Quench, & Carbon Adsorber to treat exhaust from a toxic gas incineration process.

Multi-Stage Scrubbing Systems

53,000 ACFM Quench Spray Tower system to provide temperature reduction and control of hot process gasses and capture ammonia and particulate.

Quench Towers and Condensers

Monroe Environmental Wet Electrostatic Precipitator (Wet ESP) systems are capable of meeting the most stringent PM2.5, opacity, and condensable particulate regulations.

Wet Electrostatic Precipitators (WESPs)

3,000 CFM stainless steel Carbon Adsorber to remove adsorbable, insoluble VOCs generated from the rubber devulcanization process. This equipment is part of a multi-stage system that also includes a Packed Tower Wet Scrubber.

Carbon Adsorbers

Monroe Cartridge Dust Collectors, rated for 4,000 CFM each to exhaust and capture crystalline silica particulate for a brick manufacturer. Interconnecting ductwork and the batching damper system with associated controls was also included.

Dust Collectors

Compact Mist Collectors for electric vehicle manufacturing ready to ship to an automotive plant.

Mist Collectors

Air Pollution Control Applications & Process Experience

Monroe Environmental has extensive experience with a wide variety of applications and processes for air pollution control. Click on a pollutant below to learn more about our approach to treating these contaminants.

Acid & Alkaline Gas Fumes

Acid and alkaline gas fumes can be produced in a variety of manufacturing, storage, mixing, and production processes. They are toxic, corrosive, and difficult to control.

Monroe has extensive experience capturing and neutralizing acid and alkaline gasses using the following technologies:

Common pollutants treated include sulfur dioxide (SO2), hydrogen sulfide (H2S), hydrogen chloride (HCl), hydrogen flouride (HF), ethylene oxide (EtO), and ammonia (NH3).

Particulate Matter PM2.5 & PM10

Particulate matter is one of the most common pollutant groups found in nearly every industrial manufacturing and production process. It includes both solid particles and certain liquid droplets.

Physical characteristics (wet, dry, sticky, solid, liquid, vapor, etc.) as well as chemical make-up of the particulate must always be evaluated in order to determine the most appropriate control equipment. Additional factors such as application, moisture content of the air/gas stream, regulatory requirements, and other pollutants present also significantly impact control device selection.

Recent changes to many emissions regulations have made PM2.5, submicron, and condensable particulates of special consideration. Monroe Environmental has the experience and expertise to meet these demanding requirements.

Monroe offers the following systems for particulate matter collection, filtration, and reduction:

Explosive Dust Collection is a specialized area of particulate matter collection. Monroe has decades of experience controlling explosive dust. Check out our Explosive Dust Collection page to learn more.

Condensables, Aerosols, & Opacity

Monroe Environmental has the expertise and equipment to properly handle difficult to remove condensables, aerosols, and other sub-micron particulates and liquid droplets that negatively affect opacity as well as PM, acid, and related emission rates.

Temperature adjustment of the gas stream is often a required step to ensure that condensables are removed prior to coalescing and filtration with media or electrostatic charge.

Monroe’s systems and equipment include:

VOCs & Odor

Volatile Organic Compounds (VOCs) as well odorous compounds can be removed from process exhaust via wet scrubbing, dry adsorption, and thermal destruction. Each of these has pros and cons which must be weighed according to a variety of factors including pollutant loading, gas volume, utility costs, and others. Monroe Environmental can assist with evaluating the process specifics and recommend the most cost-effective solution.

Our systems and equipment include:

Contact a Monroe Environmental applications expert for more information.

Mist Collection

Mist Collection covers an expansive list of applications from machining, parts washing, cold rolling and hot temper mills, food processing, and many others. Monroe Environmental is a worldwide leader in mist collection, with a variety of designs to suit any application.

Our systems and technologies include:

Dust Collection

Dust Collection is a very common air pollution control application that encompasses collection, filtration, separation, and recovery of dry, wet, and explosive particulates. There are a variety of dry filter media options including bags, cartridges, box filters, metal screens, and countless others that should be carefully selected based on application specifics. Wet Collection is also common for wet, sticky, and waxy particulate and can reduce lifetime operating costs by eliminating filter media. Explosive dust can be handled with either wet or dry collection.

Our systems and equipment include:

Contact a Monroe Applications Engineer for assistance with evaluating the best technology for your application.

Wet Scrubbing System for the removal of SO2 fumes, polypropylene construction

650 ACFM Packed Tower Scrubbing System, polypropylene construction for SO2 removal.

Dual Throat Venturi Scrubber to exhaust dryers that dry fiberglass material.

Monroe Dual Throat Venturi Scrubber with drag conveyor for solids recovery at insulation plant.

Carbon Adsorber for battery manufacturer's VOC abatement system

4,500 CFM Carbon Adsorber to exhaust clean room at an automotive battery plant.

Value-Added Engineering, On‑Site, and Support Services

Monroe also offers a variety of engineering, assessment, evaluation, and design services to help engineers, operators, and plant personnel get the most out of their air pollution control systems.

  • Air Pollution process assessment
  • Scrubbing system evaluations
  • Mist/Dust Collector evaluations
  • Performance and compliance testing
  • System rebuilds and retrofits

50,000 CFM Oil Mist Collector with custom ductwork and airflow monitoring system for automotive plant
50,000 CFM Oil Mist Collector with custom ductwork and airflow monitoring system

Auxiliary Equipment, Components, & Packaged Systems

In addition to providing air pollution control systems, Monroe offers an array of equipment, components, and devices typically needed for enabling a complete turnkey installation. These include but are not limited to the following:

  • Ductwork, dampers, and stacks
  • Control and instrumentation systems
  • Chemical storage and feed systems
  • Blowdown and water treatment systems
  • Carbon and filter media
  • Pumps, piping, valves, and fittings
Tapered Ductwork System
Tapered ductwork system with individual source hoods for multiple Oil Mist Collectors on a high production machining line.

Air pollution equipment replacement parts
Spare/Replacement Part Supply

  • Stocked inventory of spare / replacement items; Monroe and others
  • On-demand inventories and deliveries
  • Expedited emergency replacement deliveries
  • And more

3D Rendering of a Packed Bed Horizontal Wet Scrubber
Technical and Engineering Support Services

  • Evaluations and troubleshooting of existing systems and problems
  • Assessments for new and replacement systems
    3D Rendering of a Packed Bed Horizontal Wet Scrubber
  • Environmental permitting and compliance assistance
  • System sizing and general arrangement drawings
  • Mechanical, electrical and structural requirements
  • PLC programming and HMI interfacing
  • Cost estimating and budgeting
  • Testing and gas stream analysis
  • Air quality impact analysis
  • And more

18,500 ACFM Packed Tower Scrubber turnkey installation. One of four for a fertilizer company.
Turnkey Construction Related Services

  • Construction management and administration oversight
  • Startup and commissioning
  • Operator training and O&M manuals
  • Performance and compliance testing
  • And more

Air pollution equipment maintenance by Monroe’s experienced field service staff.
On-Site Services, Maintenance, & Repair

  • Annual or as-needed service and preventative maintenance
  • Emergency service support
  • On-site servicing, adjustment, repairs, and replacements
  • Extended warranties
  • And more

Industries Served

Rental and Pilot Air Pollution Control Equipment

Rental, Pilot, and Testing Programs

Learn More

Resources & Literature

Recent Case Studies

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