Calculators - Disinfection of Pipelines and Storage Facilities Field Guide - page 126

mL/min = gal/hr (from c7-2) × 3,785 mL/gal × hr/60 min

(c7-3)

Dechlori-
nation
chemical
feed rate
(mL/min)

Chlorinated
water flow
rate (gpm)
(withdrawal
or fill)

Chlorine
residual
(mg/L)

Dechlori-
nation
chemical
dosage
(Table 7-2)

Strength of
dechlori-
nation
chemical
solution (%)

= 0.038 × × ×

÷

mL/min = L/sec × mgC/L × mgD/mgC × 60sec/min ×

1,000 mL/L ÷ (% strength 10,000 mg/L/%)

*mgC is the milligrams of chlorine and mgD is the milligrams of dechlo-
rination chemical

×

(c7-4)

Dechlori-
nation
chemical
feed rate
(mL/min)

Chlorinated
water flow
rate (L/sec)
(withdrawal
or fill)

Chlorine
residual
(mg/L)

Dechlori-
nation
chemical
dosage
(Table 7-2)

Strength of
dechlori-
nation
chemical
solution (%)

= 6 × × × ÷

Pipeline Volume Calculator—Continuous-Feed Method
To calculate the volume of 25 mg/L chlorine solution needed
to fill a pipeline, use this calculator.

(c8-1)

Volume of 25 mg/L
solution needed to
fill pipeline

Length of pipeline of
selected diameter

Volume per unit length
(from Table 8-2)

= ×

Chlorine Calculator

(c8-2)

Amount of chemical
per unit volume (from
Table 8-3)

Amount of chlorine
needed

Volume (from c8-1)

= ×