# 978-0131190825 Chapter 4

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 4 WATER QUALITY
Review Question Page References
(11) 98 (21) 104
(12) 98 (22) 105
(13) 98 (23) 105
(14) - (24) 106
(15) 102 (25) 106
(16) 101 (26) 106
(17) 102 (27) 107
(18) 102 (28) 107
(19) 103 (29) 108
(20) 103 (30) 108
(42) www.epa.gov/nerlcwww
(31) 108
(32) 110
(33) 110
(34) 112
(35) 112
(36) 112
(37) 113
(38) 114
(39) 115
(40) 117
(43) www.envirosources.com
(1) 90
(2) 93
(3) 93
(4) 94
(5) -
(6) 94
(7) 94
(8) 95
(9) 96
(10) 98
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Solutions to Practice Problems
1. 275 ppm = 275 mg/L (since 1 ppm = 1 mg/L)
4. 30 ac-ft x 43,560 ft3/ac-ft x 7.48 gal/ft3 = 9,775,000 gal
9
8. BOD5 = 14 - 6 = 8 mg/L; there apparently is some organic material in the stream,
10. BODt = BODL x (1 - 10-kt} (Equation 4-2)
12; BOD5 =280 x (1 -10-0.1 X 5 ) = 190 mg/L (Eq. 4-2)
14. TSS = (A - B) x 1000/C (Equation 4-4)
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