Equipment Used in Industries to Control Air Pollution

pollution control air equipments

Introduction

To reduce air pollution, control of emitted air pollutants into the natural environment is a must. Almost every step in the industrial process produces some kind of air pollutants. Air pollution control equipment includes devices or systems that reduce/eliminate the releases of air contaminants being generated during industrial processes.

There are two sources of air pollutants that are listed below:

Mobile Source: It includes moving subjects such as automobiles, trains, airplanes, etc.

Stationary Source: It includes non-mobile sources such as industries, factories, power plants, etc.

Groups of Air Pollutants

Air pollutants are classified into three groups.

Greenhouse Gases: It includes chlorofluorocarbons, methane, carbon dioxide, etc.

Air Toxics: It includes a variety of chemicals, heavy metals, volatile organic compounds, fuels, solvents, etc.

Criteria Air Pollutants: It includes six pollutants that are found commonly. Examples are lead, sulfur oxide, nitrogen oxide, carbon monoxide, particulate matter, and ozone.

Air Pollution Control Processes

There are three processes that are used in air pollution control equipment or devices.

 Collection: It works on collecting air pollutants from polluted air.

Conversion: It works on converting air pollutants into less damaging substances.

Incineration: It works on the destruction of air pollutants.

Air pollution control equipment is based on using a single system or series of systems to reduce the variety of air pollutants being released into the environment from stationary or mobile sources. In industries, the air pollutants are removed by a variety of equipment mentioned below.

The below table is representing a brief detail of equipment.

Serial No. Air Pollution Control Equipment Industries Types of Air Pollutants Examples of Air pollutants Limitation
1. Biofilters Agriculture, Pharmaceuticals, Food Processing, Wastewater Treatment, Refineries, Gases VOCs, Water Soluble/ Odorous Compounds, Organic Hazardous Air Pollutants, It works on water-soluble pollutants only.

 

2. Catalytic Reactors Oil Refineries, Landfills, Automobiles, Gases VOCs, NOx It doesn’t work on gas streams containing particulate matter.
3. Electrostatic Precipitators

 

Power Generating Facilities Particulate Matter Dust, Fumes, Smoke, It is suitable for moderate resistivity particles.
4. Scrubbers

 

Oil Refineries, Combustion Process, Fertilizer Plants, Powder Coating, Particulate Matter,

Gases

Dust, VOCs, Fumes, Heavy Metals, Acid gases, hydrocarbons, It works on cooled and diluted streams.
5. Air Filters

 

Fertilizer Plants, Nuclear Power Plants, Mining, Bulk Processing, Metallurgical Plants, Electronics Manufacturing Particulate Matter Fumes, Dust, Bio-pollutants, Fine Powder Chemicals and high temperatures affect the working efficiency of air filters.
6. Cyclones

 

Food and Chemical Processing, Woodworking Shops, Construction Material Manufacturing, Particulate Matter Ash, Dust, Pieces of material Smaller size particles hinder the working efficiency of cyclones.
7. Mist Collectors

 

Paper and Pulp Mills, Metallurgy Process, Desalination Plants, Gases Acid Gas, Vapor, Smoke, Mist, It doesn’t work on streams with bigger size particular matter.
8. Incinerators

 

Rubber, Plastic, and Chemical Manufacturing, Landfills, Gases and Particulate Matter Soot, VOCs, Solid Waste, Hydrocarbons, Fumes, It is not suitable for sulfur to contain compounds or halogens.

 

Conclusion

Since the industrial revolution, the average temperature of the Earth has been increased. Air pollution is increasing day by day due to mobile and stationary sources.  Air pollution is negatively impacting the ecosystem resulting in human diseases, biodiversity loss, etc. and preventive measures should be taken to reduce air pollution.

Also, check out Fossil Fuels are Killing Us – According to Latest Harvard Study

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