Environmental Engineering FOURTH EDITION

Air Pollution Control 395

: .p. Clean gas out

Spray riser

Water jets

Tangential inlet

for dirty gas

Water in

Flushing jets,

directed downward

. Water and
polluting particles out

Figure 20-8. Spray tower. (Courtesy of American Lung Association.)

W

Clean air +

Dirty water

Figure 20-9. Venturi scrubber.