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Q4: A wastewater treatment plant as shown: The surface area of each unit 800 m². Depth of each unit 2 m. and %BOD removal in Primary and Secondary sedimentation tanks = 25%. Find: 1- Total % BOD removal in the plant. 2- BOD removal in the Trickling filter. 3- The flow rate (m³/d) in the plant. r-150% BOD, 180 mg/l Pri. sed. tank River BOD,-20 mg/1 Trickling filter Sec. sed. tank (25 marks)

Q4: A wastewater treatment plant as shown: The surface area of each unit 800 m². Depth of each unit 2 m. and %BOD removal in Primary and Secondary sedimentation tanks = 25%. Find: 1- Total % BOD removal in the plant. 2- BOD removal in the Trickling filter. 3- The flow rate (m³/d) in the plant. r-150% BOD, 180 mg/l Pri. sed. tank River BOD,-20 mg/1 Trickling filter Sec. sed. tank (25 marks)

Structural Analysis
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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Q4: A wastewater treatment plant as shown: The surface area of each unit 800 m². Depth of each unit 2 m. and %BOD removal in Primary and Secondary sedimentation tanks = 25%. Find: 1- Total % BOD removal in the plant. 2- BOD removal in the Trickling filter. 3- The flow rate (m³/d) in the plant. r-150% BOD, 180 mg/l Pri. sed. tank River BOD,-20 mg/1 Trickling filter Sec. sed. tank (25 marks)
Transcribed Image Text:Q4: A wastewater treatment plant as shown: The surface area of each unit 800 m². Depth of each unit 2 m. and %BOD removal in Primary and Secondary sedimentation tanks = 25%. Find: 1- Total % BOD removal in the plant. 2- BOD removal in the Trickling filter. 3- The flow rate (m³/d) in the plant. r-150% BOD, 180 mg/l Pri. sed. tank River BOD,-20 mg/1 Trickling filter Sec. sed. tank (25 marks)
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