2. A wastewater treatment plant disposes of its effluents into astream at a point A. Characteristics of the stream at a location fairly upstreamof A and of the effluent are as below:ItemUnitsEffluentStreamm3 /smg l1Flow0.200.50Dissolved 0xygen2.008.00Temperature°C2622BOD, at 20°Cmgll403.Assume that the deoxygenation constant K, at 20°C (base e) = 0.20 d-l andthe re-aeration constant K, at 20°C (base e)Equilibrium concentration of dissolved oxygen C, for the fresh water is asfollows:0.40 d-1 for the mixture.%3DTemperature °C18202223242526C, (mg/1)9.548.998.838.538.388.229.17The velocity of the stream downstream of the point A is 0.2 m/s. Determinethe critical oxygen deficit and its location.[Use temperature coefficients of 1.04 for K, and 1.02 for K,)

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2. A wastewater treatment plant disposes of its effluents into a stream at a point A. Characteristics of the stream at a location fairly upstream of A and of the effluent are as below: Item Units Effluent Stream m3/s mgll Flow 0.20 0.50 Dissolved oxygen 2.00 8.00 Temperature °C 26 22 BOD, at 20°C mgl1 40 3 Assume that the deoxygenation constant K, at 20°C (base e) = 0.20 d- and the re-aeration constant K, at 20°C (base e) Equilibrium concentration of dissolved oxygen C, for the fresh water is as follows: %3D = 0.40 d-1 for the mixture. Temperature °C 18 20 22 23 24 25 26 C, (mg/1) 9.54 9.17 8.99 8.83 8.53 8.38 8.22 The velocity of the stream downstream of the point A is 0.2 m/s. Determine the critical oxygen deficit and its location. [Use temperature coefficients of 1.04 for K, and 1.02 for K,)

2. A wastewater treatment plant disposes of its effluents into a stream at a point A. Characteristics of the stream at a location fairly upstream of A and of the effluent are as below: Item Units Effluent Stream m3/s mgll Flow 0.20 0.50 Dissolved oxygen 2.00 8.00 Temperature °C 26 22 BOD, at 20°C mgl1 40 3 Assume that the deoxygenation constant K, at 20°C (base e) = 0.20 d- and the re-aeration constant K, at 20°C (base e) Equilibrium concentration of dissolved oxygen C, for the fresh water is as follows: %3D = 0.40 d-1 for the mixture. Temperature °C 18 20 22 23 24 25 26 C, (mg/1) 9.54 9.17 8.99 8.83 8.53 8.38 8.22 The velocity of the stream downstream of the point A is 0.2 m/s. Determine the critical oxygen deficit and its location. [Use temperature coefficients of 1.04 for K, and 1.02 for K,)

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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