Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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A 20,000 L tank of water with pH of 7.5 is to be treated with a liquid hydrogen bromide acid (HBr). If after 5000 L of the acid was added to the volume in the tank the pH becomes 5.5, how much mass of hydrogen was added to the system? How much total HBr was added?
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You have been contracted to determine the characteristics of raw water at 20°C. You complete a chlorine dosing experiment to aid in designing your chlorination process (Figure Below).a. What is the breakpoint chlorine dosage?b. What is the chlorine demand at a chlorine dosage of 1.2 mg/L?c. For a plant that processes 10 m3/hr, how much chlorine should I add per day to reach a constant residual chlorine concentration of 0.7 mg/ld. Design a chlorine contact tank that would achieve the required Ct value for a 3 log deactivation of Girardia (Ct = 54 mg/l min).
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