Environmental Controls

Learning Objectives

• TLW be able to identify various types of environmental control equipment used in the process industry.

• TLW be able to describe how environmental control equipment operates and its limitations

Water & Wastewater Treatment

Primary Clarifier

Trickling Filter – Secondary Treatment

Trickling Filter – Secondary Treatment

Water Treatment Plant

Activated Sludge – Secondary Treatment

Activated Sludge – Secondary Treatment

“Bugs” –

Bacteria, protozoa…..

Sludge Digester

Sludge Digester

Sludge digester

Sludge dewatering

Sludge Dryers

Dried sludge – mostly organic material

Sludge incinerator

Air

Baghouse

Cyclone separator

Electrostatic Precipitator

Electrostatic Precipitator

Wet Scrubber

Wet Scrubber

Carbon Adsorber

Packed Tower

Packed tower

Flares

FlaresIncomplete combustion – too much particulate matter released

Waste

Solvent Recovery

Assignment

• Internet search to locate :– 1 piece of water/wastewater treatment

equipment– 1 piece of air emission control equipment

• Describe in detail:– Specific application (if any)– Basic operation – Key components/parts– Limitations