A city discharge 20 million litres per day of waste water at temperature of 25 ° C into a stream, whose discharge is 2.0 cumecs and whose temperature is 25 ° C. The 5 days BOD of waste water 150 mg/l and k, (Deoxygenation constant rate / day) Value is 0.1 day and k₂ (Reaeration rate constant /day) is 0.2 / day. Determine the critical oxygen deficit and time of occurrence. Assume stream is 90 % saturated with oxygen before the waste is added. Take solubility of oxygen in water at 25° C as 9 mg/L

A city discharge 20 million litres per day of waste water at temperature of 25 ° C into a stream, whose discharge is 2.0 cumecs and whose temperature is 25 ° C. The 5 days BOD of waste water 150 mg/l and k, (Deoxygenation constant rate / day) Value is 0.1 day and k₂ (Reaeration rate constant /day) is 0.2 / day. Determine the critical oxygen deficit and time of occurrence. Assume stream is 90 % saturated with oxygen before the waste is added. Take solubility of oxygen in water at 25° C as 9 mg/L

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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