Environmental Engineering FOURTH EDITION

398 ENVIRONMENTAL ENGINEERING

Figure 20-11. Effectiveness of electrostatic precipitators on a coal-fired electric
generating plant. The electrostatic precipitator on the right has been turned off.

0.1 1 .o 10.0 100.0

Particle diameter, microns

Figure 20-12. Comparison of removal efficiencies: (A) simple and (B) high-efficiency
cyclone; (C) electrostatic precipitator; (D) spray tower; (E) Venturi scrubber; and
(F) bag filter.