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500 ml of wastewater sample was collected and 200 ml of this sample was analyzed by classical 5 day BOD test (at 20\deg C) with 1/15 dilution. The initial DO measurement result was 9 mg/L and 35% reduction in DO was observed at the end of the experiment. The BOD reaction rate constant was 0.24 d¹ (base e) and there was no change in the DO concentration of the blank. If this wastewater contains 2.35 mg/L ammonia, 0.073 mM nitrate, 0.66 mg/L. nitrite and 7.81 mg/L TKN, answer the following questions:a) What are the organic nitrogen and total nitrogen concentrations in this sample?b) Calculate the BOD, at 10\deg C.

500 ml of wastewater sample was collected and 200 ml of this sample was analyzed by classical 5 day BOD test (at 20\deg C) with 1/15 dilution. The initial DO measurement result was 9 mg/L and 35% reduction in DO was observed at the end of the experiment. The BOD reaction rate constant was 0.24 d¹ (base e) and there was no change in the DO concentration of the blank. If this wastewater contains 2.35 mg/L ammonia, 0.073 mM nitrate, 0.66 mg/L. nitrite and 7.81 mg/L TKN, answer the following questions:a) What are the organic nitrogen and total nitrogen concentrations in this sample?b) Calculate the BOD, at 10\deg C.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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500 ml of wastewater sample was collected and 200 ml of this sample was analyzed by classical 5 day BOD test (at 20\deg C) with 1/15 dilution. The initial DO measurement result was 9 mg/L and 35% reduction in DO was observed at the end of the experiment. The BOD reaction rate constant was 0.24 d¹ (base e) and there was no change in the DO concentration of the blank. If this wastewater contains 2.35 mg/L ammonia, 0.073 mM nitrate, 0.66 mg/L. nitrite and 7.81 mg/L TKN, answer the following questions:a) What are the organic nitrogen and total nitrogen concentrations in this sample?b) Calculate the BOD, at 10\deg C.
Transcribed Image Text:500 ml of wastewater sample was collected and 200 ml of this sample was analyzed by classical 5 day BOD test (at 20\deg C) with 1/15 dilution. The initial DO measurement result was 9 mg/L and 35% reduction in DO was observed at the end of the experiment. The BOD reaction rate constant was 0.24 d¹ (base e) and there was no change in the DO concentration of the blank. If this wastewater contains 2.35 mg/L ammonia, 0.073 mM nitrate, 0.66 mg/L. nitrite and 7.81 mg/L TKN, answer the following questions:a) What are the organic nitrogen and total nitrogen concentrations in this sample?b) Calculate the BOD, at 10\deg C.
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