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Unformatted text preview: c) Draw the curve, labeling x and y axes, K s , and max . (4 points) d) How does Ks relate to biodegradability? (2 points) 7. Estimate the COD, TOC and ultimate BOD, mg/L, of a solution that is made by dissolving one teaspoon of sugar, C 6 H 12 O 6 , (6 grams) in 1.00 liter of distilled water. [C = 12 g/moles, O = 16 g/moles, H = 1 g/moles] (10 points) 8. Sketch an oxygen sag curve and indicate on it: (9 points) a. The stretch of river for which rate of deoxygenation exceeds the rate of reaeration. b. The stretch of river for which rate of reaeration exceeds the rate of deoxygenation. c. The point at which the two rates are equal. 9. Calculate the number of unicellular bacteria grown from a population of 100 at time zero after 48 hours of growth. Assume that the lag period is hour and the generation doubling time is 20 minutes and that exponential growth takes place for the entire growth period. (10 points) 10....
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This note was uploaded on 01/06/2011 for the course CE 350 taught by Professor Nies,l during the Spring '08 term at Purdue UniversityWest Lafayette.
 Spring '08
 Nies,L
 Environmental Engineering

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