Systems & CodeQuestion 54 of 110
A laboratory discharges 10 gpm of acid waste that must be diluted with water at a 5-to-1 ratio (water to acid waste) before it enters the neutralizing tank. How much dilution water is required?
a.10 gpm
b.50 gpm
c.25 gpm
d.60 gpm
Explanation
Dilution water = ratio x waste flow = 5 x 10 = 50 gpm. Diluting acid waste before the neutralizing tank lowers the concentration so the tank can raise the pH into the permitted discharge range. The combined flow of 60 gpm then passes to the neutralizer before the sanitary sewer.
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