Environmental Engineering FOURTH EDITION

2,4,5-T, 308,416

2,4-D, 308

Absorbance, 98

Absorbed radiation dose, 3 19

Acid formers, 210-211,267

Acid mine drainage, 54,93,326

Acid rain, 7,287,419-420

Acoustic environment, 428-429

Activated carbon adsorption, 197

Activated sludge, 184-195,199,205,207,

equivalent, 319

209-210,214,230
biological processes, 187-195
Adiabatic lapse rate, 355-358,360-361
Adsorption, 169-170,197,399
Aerated lagoon, 196,299
Aeration
activated sludge, 183-187,190
diffused, 187
extended, 184-185
step, 185

tapered, 185-186
zone of, 108-109
Aerobic &composition, 58-59,69,86,97,
263,268,290
Aerosols, 361
Agent Orange, 308
Agricultural chemicals, 40,233-234
Agricultural wastes, 53
Agriculture

tank, 183-185,191,193-194,197,199

sediment loading function, 236-241
water pollution, 51-52,54,73,75-76,
235,241-243
Air classifiers, 283-285
Air dispersion of pollutants, 362-366
dispersion coefficient, 362-365

horizontal dispersion, 352-355

vertical dispersion, 355-362

Air pollution control, 385-409

Air pollution law, 411-422

Air quality measurement, 375-382

Aircraft noise, 432,441442

Algae, 55,57,70,71-73,92, 196,206

Algal blooms, 73

Alkali scrubbing, 402

Alkalinity of water, 94-95

Alpha radiation, 313-318,320,326,

Aluminum

329-330,332,337

cans, 251-252,261,273,279

phosphorus removal, 198,206,208

recovery, 273-275,284-286

Aluminum sulfate (alum), 2, 135, 137,

140,219,222

Ambient air quality measurement, 375

Ambient air quality standards, 39,373,

Ambient lapse rate, 355-360,364

Ammonia, 5840,151,347

measurement of, 90,97-99,379

wastewater, 169, 197,266

water pollution, 69-70,75,235

407,412,414-415

Anaerobic decomposition, 59-60,69,72,

Antagonism, 39

Anthropogenic pollutants, 21,52,321

Anticyclones, 351-352

Aquacludes, 111, 115

Aquatic ecology. See Ecology, aquatic

Aquifers, 109,111-115,242,341-342,

262,267-268,290

344

confined, 11 1

drinking water, 75,247,297-298

unconfined, 112-114

47 1