CHAPTER 5 WATER POLLUTION
Review Questions Page References
(1) 123 (8) 128 (14) 133
(2) 124 (9) 129 (15) 134
(3) 124 (10) 130 (16) 135
(4) 125 (11) 130 (17) 135
(5) 126 (12) 132 (18) 136
(6) 126 (13) 132 (19) 138
(7) 127 (20) 138
(21) 138
(22) 140
(23) 140
(24) 141
(25) 142
(26) 143
(27) www.epa.gov/iwi
(28) www.epa.gov/owow/iakes/lakes.htm/
(29) www.epa.gov/owow/estuaries/about1.html
(30) www.epa.gov/owowwtr1
(31) www.envirosources.com
Solutions to Practice Problems
1. cd = (csQs + cWQW)/(Qs + QW) (Equation 5-1)
3. Di = 11 – 8 = 3 mg/L; with Equation 5-2, find critical time as follows:
4. BOD5 = (6 x 16 + 28 x 4)/(16 + 4) = 10.4 mg/L (Equation 5-1)
11
4. (continued)
12