Environmental Engineering Reference
In-Depth Information
Table 3-10 Approximate feed rate settings for 100 mg/L chlorine dosage
at various flow rates (liquid chlorine feed)
US Units
SI Units
Flow Rate
gpm
Feed Rate Setting
lb/day
Flow Rate
L/sec
Feed Rate Setting
g/hr
10
12
0.5
180
20
24
1
.0
360
30
36
1.5
540
40
48
2
.0
720
50
60
2.5
900
60
72
3
.0
1,080
70
84
3.5
1,260
80
96
4
.0
1,440
90
108
4.5
1,620
100
120
5
.0
1,800
Table
Tamer
This table shows the approximate chlorinator feed rate
settings for various fill rates to achieve 100 mg/L dosage.
To get the setting for other dosages, just multiply the setting
for 100 mg/L by the ratio: other dosage/100 mg/L.
Example: The pipeline fill rate is 30 gpm but the desired
dosage is 25 mg/L. For a 30 gpm fill rate the chlorinator
feed setting from the table is 36 lb/day. Multiply this setting
times the ratio 25/100 = 9 lb/day.
Use the chlorination chemical amount calculation checklist on
page 28 to ensure that you have all of the items needed to make
the calculation.
❑
The pipeline diameter and length are used to calculate the
volume of the pipeline from Table 3-6.
❑
The number of valves, hydrants, and other appurtenances
determine the number of tablets needed for disinfection of
these items. Usually one tablet for each is adequate.
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