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How many gallons of 15% sodium hypochlorite will be needed to disinfect a reservoir 25 feet in diameter and 10 feet tall when chlorine demand

How many gallons of 15% sodium hypochlorite will be needed to disinfect a reservoir 25 feet in diameter and 10 feet tall when chlorine demand was 4.5 ppm and the expected chlorine residual during the 24 hour disinfection period is 2.0 ppm? 0.6 gal/day 1.6 gal/day 2.4 gal/day 4.2 gal/day
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How many gallons of 15% sodium hypochlorite will be needed to disinfect a reservoir 25 feet in diarneter and 10 feet tall when chlorine dernand was 4.5ppm and the expected chlorine residual during the 24 hour disinfection period is 2.0ppm ? 0.6eg/day 1.6gal/day 2.4gal/day 4.2 galday

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