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?
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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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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