# 978-0131190825 Chapter 10

Document Type
Homework Help
Book Title
Basic Environmental Technology: Water Supply-- Waste Management & Pollution Control 5th Edition
Authors
Jerry A. Nathanson M.S. P.E.
CHAPTER 10 WASTEWATER TREATMENT AND DISPOSAL
Review Question Page References
(1) 287 (15) 294 (29) 309
(2) 287 (16) 295 (30) 309
(3) 289 (17) 295 (31) 309
(4) 289 (18) 296 (32) 311
(5) 289 (19) 296 (33) 312
(6) 288 (20) 296 (34) 312
(7) 290 (21) 296 (35) 315
(8) 291 (22) 296 (36) 315
(9) 292 (23) 298 (37) 316
(10) 292 (24) 299 (38) 317
(11) - (25) 299 (39) 319
(12) 293 (26) 305 (40) 321
(13) 293 (27) 305 (41) 322
(14) 293 (28) 307 (42) 323 (57) www.envirosources.com
(55) www.mwra.com/sewer/htmi/sewditp.htm (56) www.epa.gov/npdes/pubs/finaI99.pdf
(43) 323
(44) 331
(45) 326
(46) 326
(47) 328
(48) 328
(49) 328
(50) 328
(51) 329
(52) 330
(53) 330
(54) 331
Solutions to Practice Problems
1. efficiency = 100 x (PIN-POUT)/PIN (Equation 10-1)
3. efficiency = 100 x (200 - 60)/200 = 70 percent
25
10. SVI = (V x 1000)/MLSS = 450 x 1000/1800 = 250 (Equation 10-6)
12. perc rate = 120 min/6 in = 20 min/in
13. 50 min/25 mm = 120 s/mm
26
15. S = (100W/8.34V) (Equation 10-7b)
16. S = 100 x M/V (Equation 10-7a)
17. primary sludge mass = E x TSS x Q (Equation 10-8a)
27

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