Q#5: Name the different physical, chemical and bacteriological tests of Calculate the ultimate BOD of a sewage at K20=0.23/day whose 5 day BOD is (your class ID) mg/l. (For example a student having class ID CU-136-2017 will use the value of 5 day BOD=136 mg/l) CLO2/PLO3 sewage.

Q#5: Name the different physical, chemical and bacteriological tests of Calculate the ultimate BOD of a sewage at K20=0.23/day whose 5 day BOD is (your class ID) mg/l. (For example a student having class ID CU-136-2017 will use the value of 5 day BOD=136 mg/l) CLO2/PLO3 sewage.

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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An industry is discharging 2500 m3/d wastewater into a sanitary sewer. The concentrations of BOD5, TSS, TN, and TP are 200, 280, 35 and 10 mg/L, respectively. Calculate the population equivalent of the industry based on flow, BOD5, TSS, TN, and TP (i.e., number of people served). Assume that the unit waste loadings in terms of g per capita per day are 95, 104, 18, and 4 for BOD5, TSS, TN (as N), TP (as P), respectively.
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Question 1 A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/l per hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while the stream has zero concentration with a flow above the sewer outfall of 102 ft/s. If the mean velocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persists.
A wastewater treatment plant discharges its effluent into a river at time 0 days as shown in the figure below.a) What is the initial DO deficit? Show your work.b) What is the critical DO concentration and the critical time?c) If the DO concentration of the river was at saturation before the effluent was discharged into it, and the DO concentration in the river after mixing is 8.0 mg/L as shown in the figure, what was the DO concentration of the wastewater treatment plant effluent. The flowrate of the river is 80 cfs downstream of the mixing point, and the flowrate of the effluent discharge
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