Environmental Engineering Reference
In-Depth Information
33.4
32.4
31.4
30.4
29.5
28.5
27.5
26.5
25.5
24.6
23.6
22.6
21.6
20.6
19.7
18.7
17.7
16.7
15.7
14.8
13.8
12.8
11.8
10.8
9.87
8.89
7.91
6.93
5.95
4.98
4.00
3.02
2.04
1.06
0.0802
-0.899
Te mperature at 07/31/1995 23:02
Distance (m)
30,000
20,000
10,000
0
0
0
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45
30,000
20,000
10,000
0
Distance (m)
(a)
Allatoona Reservoir, GA, predicted water temperatures (°C) for July 31, 1995
358.0
349.0
339.0
329.0
319.0
309.0
299.0
289.0
279.0
270.0
260.0
250.0
240.0
230.0
220.0
210.0
200.0
191.0
181.0
171.0
161.0
151.0
141.0
131.0
122.0
112.0
102.0
91.9
82.0
72.2
62.3
52.4
42.6
32.7
22.8
13.0
Water_age at 07/31/1995 23:02
Distance (m)
30,000
20,000
10,000
0
0
0
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45
30,000
20,000
10,000
0
Distance (m)
(b)
Allatoona Reservoir, GA predicted water age (days), July 31, 1995 (from 1 January)
FIGURE 14.20
(a,b) Predicted water temperature (°C) and water age (days) in Lake Allatoona, GA, for July
31, 1995. (From Martin, J.L. and Hesterlee, C., Detailed reservoir water quality modeling to support environ-
mental impact statements for the evaluation of ACT and ACF river basins water allocation, Contract Report
prepared for the U.S. Army Engineer District, Mobile, 1988.)
The second reaction is relatively fast compared to the irst one (rate limiting), therefore some-
times the two reactions are combined, such as in:
+
− +
+→ ++
NH
2O
NO HO 2H
(14.13)
4
2
3
2
The process of nitrification impacts the form and availability of nitrogen, where ammonia
is the form preferred by autotrophs. The process also impacts oxygen. Using the stoichiom-
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