Air Pollution Control Devices

Cyclone

Cyclone

collector, for

removing

relatively coarse

particulates from

the air. Small

cyclone devices

are often

installed to

control pollution

from mobile

sources.

Electrostatic Precipitator

Electrostatic precipitator, a common particle-collection device at

fossil-fuel power-generating stations.

Baghouse Filter

Baghouse employing an array of fabric bags for filtering the airstream.

Wet Scrubber

Wet

scrubber

using a

limestone

slurry to

remove

sulfur

dioxide from

flue gas..

Water Pollution

Water Pollution

Huang He (Yellow River) near Lanzhou, Gansu province, China.

A section of the Huang He (Yellow River) stained red by discharge flowing from a sewage pipe in Lanzhou, Gansu province, China.

Toxic Euglena bloom

Toxic bloom caused by Euglena, a photosynthetic protist.

Oil Spill

Worker cleaning a rock on the beach of Green Island, Alaska, after the Exxon Valdez oil spill, 1989.

Coral Reef Damage by Water Pollution

Achilles tang surgeon fish (Acanthurus achilles) at a coral reef damaged by pollution at Hanauma Bay, Hawaii.

Noise Pollution

Noise Pollution by Construction Activity

Breaking up pavement with a pneumatic jackhammer.

Solid Waste Disposal

Solid Waste Disposal

Refuse Disposal System: plastic bins filled with recyclable materials waiting to be picked up.

Solid Waste Disposal

Sanitary Landfill : Bulldozers working on a sanitary landfill.

Solid Waste Disposal

Sanitary Landfill : Two methods of constructing a sanitary landfill