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

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Mechanical Processes

In civil engineering, the materials have to undergo a series of manufacturing processes before using them in construction and structural applications. These manufacturing processes form the foundation stone of mechanical processes. Some of the civil engineering materials such as bars, metallic beams, metallic columns, surveying equipment, earthmovers, overhead cranes, structural and construction components, and even cement that is the most fundamental construction component need to undergo different manufacturing processes before they are ready to use. These processes are mechanical.

Question

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

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