4. (Modified from problem in an FE Review Book) A municipal wastewater treatment plant is discharging its effluent into a river. Based on a mass balance at the discharge, the initial BODun and initial dissolved oxygen deficit in the stream are given as 8.2 mg/L and 2.4 mg/L respectively. Determine the minimum dissolved oxygen concentration of a stream given the following water quality and kinetic parameters: dissolved oxygen saturation = 9.2 mg/L reaeration rate coefficient = 0.8 /day, decomposition rate coefficient = 0.25 /day. Minimum D.O. concentration: mg/l

4. (Modified from problem in an FE Review Book) A municipal wastewater treatment plant is discharging its effluent into a river. Based on a mass balance at the discharge, the initial BODun and initial dissolved oxygen deficit in the stream are given as 8.2 mg/L and 2.4 mg/L respectively. Determine the minimum dissolved oxygen concentration of a stream given the following water quality and kinetic parameters: dissolved oxygen saturation = 9.2 mg/L reaeration rate coefficient = 0.8 /day, decomposition rate coefficient = 0.25 /day. Minimum D.O. concentration: 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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The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

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4. (Modified from problem in an FE Review Book) A municipal wastewater treatment plant is discharging its effluent into a river. Based on a mass balance at the discharge, the initial BODult and initial dissolved oxygen deficit in the stream are given as 8.2 mg/L and 2.4 mg/L, respectively. Determine the minimum
dissolved oxygen concentration of a stream given the following water quality and kinetic parameters: dissolved oxygen saturation = 9.2 mg/L, reaeration rate coefficient = 0.8 /day, decomposition rate coefficient = 0.25 /day.
Minimum D.O. concentration:
mg/L
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