35 The average daily waste flow from a factory in an industrial estate is 75 m³ of stearic acid (CH2COOH) of concentration 150 mg/l and 9 m³ of capric acid (C,H,,COOH) of concentration 500 mg/l. Calculate the theoretical oxygen demand and 5 day BOD of the combined wastes. Calculate the minimum amount of nitrogen and phosphorus required in the waste stream for it to be amenable to biological oxidation treatment. Assume that BOD = 0.7 ThOD and Atomic weights: H = 1, C = 12, N = 14, O=16 and P32. BOD: N: P ratio of 100: 5: 1 is required in waste water for it to be amenable to biological oxydation treatment. 5

35 The average daily waste flow from a factory in an industrial estate is 75 m³ of stearic acid (CH2COOH) of concentration 150 mg/l and 9 m³ of capric acid (C,H,,COOH) of concentration 500 mg/l. Calculate the theoretical oxygen demand and 5 day BOD of the combined wastes. Calculate the minimum amount of nitrogen and phosphorus required in the waste stream for it to be amenable to biological oxidation treatment. Assume that BOD = 0.7 ThOD and Atomic weights: H = 1, C = 12, N = 14, O=16 and P32. BOD: N: P ratio of 100: 5: 1 is required in waste water for it to be amenable to biological oxydation treatment. 5

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter6: Biological Processes

Section: Chapter Questions

Problem 6.6P

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