Disinfection of Storage Facilities - Disinfection of Pipelines and Storage Facilities Field Guide - page 73

Table 5-3 Approximate amount of chlorination chemicals needed for
10 mg/L concentration

5% Sodium
Hypochlorite

65% Calcium
Hypochlorite Liquid Chlorine

Volume
Tr e a t e d

lb kg gal L lb kg

100,000 gal 8.3 3.8 19.4 73.4 12.8 5.8

100 m 3

2.2 1.0 5.1 19.4 3.4 1.5

Chlorination Chemical Calculator
The approximate amount of chlorination chemical needed for
10 mg/L chlorine concentration for a given size tank is calculated
as follows (use either US or SI units):

1 2 3 4

Amount
of
chemical
needed

Volume
(from tank
shape
equations)

Amount
of
chemical
(from
Table 5-3)

Chemical
strength
factor =
strength in
table/strength
of chemical
selected

Volume
(from
Table 5-3)

=

÷

(c5-5)

× ×

This calculator (c5-5) allows for the use of any chemical, or
any strength, for any size storage facility. Just plug in the num-
bers and calculate the answer. Make sure that all of the values
are either in US or SI units.
￿ The first value is the volume of the tank. This comes

from the tank volume calculators or Table 5-2 for hori-
zontal cylindrical tanks.

￿ Next, insert the value from Table 5-3 for the chemical

selected (liquid chlorine, sodium hypochlorite, or calcium
hypochlorite).

￿ The third factor is an adjustment for the strength of the

chemical if it differs from the amount in Table 5-3. The