Page 928 - Fundamentals of Water Treatment Unit Processes : Physical, Chemical, and Biological

Index 883

secondary effluent, 378 criterion, 22 theory of, 85
sedimentation, 95–96 data utility, 31 typical design data, 85–86
stand-alone process, 378–379 definitions, 21 uses, 84
technical design, nontechnical factors federal laws Weir loading rate, 132
consulting engineers design systems, Clean Water Act, 1972, 25 Weir plate, 395, 412, 420
14–16 legal definitions, 26 Wet capacity, 536
esthetic issues, 13–14 priority pollutants, 26–27 Wet-oxidation, 644
expansion provision, 13 regulations, 26
institution, 14 Safe Drinking Water Act, 1974, 25 X
operation issues, 13 knowledge
regulations, 14 contaminants, 27 Xenobiotic, 718
team management, 13 measurement technologies, 28
tertiary treatment, 9–10, 378 source waters and product waters, 31–34 Z
treatment plant requirements, 3 standard
treatment trains, 8–9, 378 normative, 24 Zeolites, 234
unit process, 4–7 surrogates, 24–25 characteristics of, 515
Water targets for treatment, 24 described, 536
density, 780 types, 22–24 framework type codes, 513–515
dynamic viscosity, 780 state of water, 22 structure of, 514–515
properties, 778–779 Wave front, 458, 482–484, 497–498, 507 synthetic, 516
surface tension, 781 Weak-acid ion-exchanger, 517, 536 Zero point of charge (ZPC), 234
Waterborne microorganisms, 607, 609 Weak-base ion-exchanger, 517, 536 Zeta potential
Water quality Wedge-wire screen coagulation, charge measurement
contaminant installation, 84 alum dosage, 214–215
categorization, 28–30 mathematical relationships, 85 Helmholtz–Smoluchowski equation, 212
definition, 21 merit, 84 Hunter equation, 212
organic carbon, 34–40 self-cleaning feature, 84 definition, 214–215
and water uses, 31 shape, 83 rapid filtration, 349, 391