Electrostatic Precipitators are used to control

Concept

Pollution-control devices are classified by the medium and pollutant they treat. An electrostatic precipitator charges suspended particles in a flowing gas and collects them on oppositely charged plates.

Application

In this item, the device acts on particulate matter carried in exhaust or flue gas before the gas enters the atmosphere. Its operating medium is therefore a gas stream, not water, soil, or sound.

Contrast

• Air Pollution: This category includes particulate emissions carried in gas, the class targeted by an electrostatic precipitator.

• Water Pollution: This category concerns contaminants in a liquid medium and is addressed by water-treatment operations.

• Soil Pollution: This category concerns contaminants retained in land and is addressed by soil-remediation methods.

• Noise Pollution: This category concerns unwanted sound energy and is addressed by barriers, isolation, or damping.

Result

Therefore, the answer is Air Pollution.