Environmental Engineering Reference
In-Depth Information
Table 3-8a
Calcium hypochlorite tablets for 25 mg/L dosage—US unit
pipe lengths
Pipe Diameter
Length of Pipe Section,
ft
in
.
13 or less
18
20
30
40
48
1
*
4
1
1
1
1
1
6
1
1
1
2
2
3
8
1
2
2
3
4
4
10
2
3
3
4
5
6
12
3
4
4
6
7
9
16 4 6 7 10 13
18 6 7 8 12 - -
20 7 9 10 - - -
24 9 13 14 - - -
* Number of 5-g calcium hypochlorite tablets for each length of pipe section shown.
Table 3-8b
Calcium hypochlorite tablets for 25 mg/L dosage—SI unit
pipe lengths
Pipe Diameter
Length of Pipe Section,
m
mm
4 5 5.5 6 10 12 16
100 1
*
1 1 1 1 1 1
150 1 1 1 1 2 2 3
200 1 2 2 2 3 3 4
250 2 2 2 3 4 5 6
300 3 3 3 4 6 7 9
350 3 4 4
5 7 9 12
400 4 5 5 6 10 11 -
450 5 6 7 7 12 - -
500 6 8 8 9 - - -
550 7 9 10 11 - - -
600 9 11 12 13 - - -
* Number of 5-g calcium hypochlorite tablets for each length of pipe section shown.
Table
Tamer
These tables show the approximate number of tablets
needed for the diameter and length of the pipe listed in the
table. Example: To achieve a 25 mg/L dosage, a 300-mm
pipe 6 m long will need about 4 tablets.
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