Environmental Engineering FOURTH EDITION

Index 481

Public health, 45,251-252
Pulp and paper mills, 65, 196-197
Pumps, 128-134
characteristic curves, 131
operation head, 132
sewage systems, 156-164
system head curve, 131-132
Pyrolysis, 269-270

Quality factor, 319-320
Quicklime. See Lime

Rad, 3 18-320
Radial flow, 112,115,129
Radiation
background, 321
decay, 313-316
health effects, 321-325
measurement, 318-321
Radiation inversion, 358
Radiation. See also Ionizing radiation,

Radioactive waste, 313-339

3 13-321

by-product, 326
contaminative cycle, 326-331
health effects, 321-325
high-level (IUW), 20,31,326,335-336
low-level (LLW), 326,336-337
management, 334-337
measurement units, 3 18-32 1
nuclear power, 404
reprocessing, 331
sources, 325-332
transportation, 337
waste management, 20,23-24,304
Radioactivity-to-mass conversion, 3 19
Radioisotopes. See also Radionuclides,

Radiological half-life, 315,319,328-330,

Radionuclides, 3 15-3 16,3 18-320,

Radionuclides

333-334

332,334

332-334

325-326,329-333

movement of, through environment,

Radium, 313,319,323,326
Radon, 320-321,332-333,338
Rain energy
erosion, 235-237

Rain gauge, 107

Rainout of pollutants, 370

Raw primary sludge, 205

Raw sludge, 175, 182,209,219

Reasonable Available Control

Technologies (RACT), 419

Reciprocating pump, 129

Recycling, 191,273-293,386

Refuse, 115,246,251-262,263-270,

Regulations. See Law

Reject, 280,284

Relative biological effectiveness (RBE).

See Quality factor

Relative risk, 42

Relaxation length, 3 17

Rem, 3 1&320,325

Reservoirs, 2,116121,132

Resource extraction, 18,29

Resource Conservation and Recovery Act

(RCRA), 260,295,297,303,326,332,

273-292,341,343

342,348-350

Resource recovery, 253,260,273-293,

Respirable particles, 377

Respiratory system, 44

Return activated sludge, 184, 187, 199

Reuse, 273-293

Revenue bonds, 25-26

Reverse osmosis, 197,309

Revised Universal Soil Loss Equation

295,298,310

(RUSLE). See also Universal Soil Loss

Equation, 240-241

Reynolds number, 145,147,177

Rheological characteristics, 208-209

Risk analysis, 23,3347

Risk assessment, 3349

Risk factors, 33-35.41

Risk perception, 46

Rosin-Rammler distribution function,

Rotary pump, 129

Rotodynamic pump, 129

Roughness coefficient, 158

Route optimization, 255

Rubbish, 251

Runoff process, 233

ecosystem risk assessment, 47

276,279