Environmental Engineering FOURTH EDITION

480 ENV~ONMENTALENGINEERTNG

Oxygenated fuel, 407
Ozone, 91,151,378,407,418419

Packed scrubbers, 399
Parameter importance units (PIU), 21
Parshall flume, 153
Particle counter, 320
Particles. See also Control of airborne
particulates
measurement of radioactive particles,

nonpoint pollution, 235-241,246

resource recovery, 275-279,

sludge, 214

soil, 109

solid waste, 252-253,268

wastewater treatment, 169,176-182,

water treatment, 135-150

313,316-318,320,321-322,329

283-284,286

190,197

Pathogens, $51-52,92,99-102,135,
150,208,210,213,233-236,241,244,
247,345
Perceived Noise Level (PNdB), 434
Percolation test, 170,251,266,267
Permanent hearing threshold shift, 438
Permeability, 110-111, 115,394
Permeameters, 110-111
Pesticides, 40,52-54,57,76, 103,210,
233-236,241-242,244-247,299,347
PH
measurement of, 81,92-94,99
sludge, 207,210-213
Phons, 43 1
Phosphates, 5840,73,97,99,333
Phosphorus. See also Nutrients, 57-60,
71-72
measurement of, 97-99
removal, 53,195-196,200,206
sediment erosion, 236,247
sludge, 209,212
wastewater, 52, 169, 172
water pollution, 72-73,75-76

radiation, 320-321

Photographic film

Photometer, 98

Photosynthesis, 55,57-59,70,396

Phreatic surface. See Water table

Physiological half-life, 39

Phytoplankton, 7 1

Phytotoxicity, 297

Piping. See also Conduits

friction loss, 122-123,131-132

hydraulics of, 119-132

Plasticity. See Rheological characteristics

Plumes. See Stack gases

PMlO

particulates, 375,414

Pneumatic pipes, and garbage collection,

254-255

Point source pollution, 52,77

Polishing pond, 196

Pollution rose, 354-356

Polychlorinated biphenyls (PCBs), 266,

Polychlorinated dibenzodioxins

Polychlorinated dibenzofurans

Polynary separation, 280

Population dose equivalent, 320

Population equivalent, 52-53

Porosity of soil, 109-110, 144-147

Positive crankcase ventilation (PCV), 405

Power curve, 13 1

Precedents, 412-413

Precipitation, 107-108,235-237,243,

245,247,267,351,368,370-371

President’s Council on Environmental

Quality (CEQ), 13,24

Pressure filter, 218-220

Pressure head of water, 110,121

Pressure sewers, 151-152

Prevailing lapse rate. See Ambient lapse

Prevention of significant deterioration

PriceAnderson Act, 346

Primary clarifier, 175,179,181-185,

Probability. See also Risk analysis, 35-38

Process loading factor, 192

Producers, 55,57

Product

344,416

(PCDDs), 308

(PCDFs), 308

rate

(PSD), in air quality, 417-418

206-208

material recovery, 280-281,283-287

risk, 37-38,41,57

Propeller pump, 129

Property law, 411413