A waste treatment lagoon having 3 cells, each 115,000 m2 in area, a minimum operating depth of 0.6 m, and a maximum operating depth of 1.5 m, receives 1,900 m3/d of wastewater having an average BOD5 of 122 mg/L. What is the BOD5 loading and detention time? The following data applies: the slope of the lagoon walls is disregarded in the calculations.a. 6.7 kg/ha-d, 54.5 daysb. 20.2 kg/ha-d, 163.4 daysc. 18.5 kg/ha-d, 177.6 daysd. 18.5 kg/ha-d, 54.5 dayse. None of these

The area of each cell in lagoon is 115000 m2. Number of cells is each lagoon is 3. The total area is…

Answered: A waste treatment lagoon having 3…

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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A waste treatment lagoon having 3 cells, each 115,000 m² in area, a minimum operating depth of 0.6 m, and a maximum operating depth of 1.5 m, receives 1,900 m³/d of wastewater having an average BOD₅ of 122 mg/L. What is the BOD₅ loading and detention time? The following data applies: the slope of the lagoon walls is disregarded in the calculations.

a. 6.7 kg/ha-d, 54.5 days
b. 20.2 kg/ha-d, 163.4 days
c. 18.5 kg/ha-d, 177.6 days
d. 18.5 kg/ha-d, 54.5 days
e. None of these

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