WorksheetsQuiz on Sewage Treatment System
Total questions: 20
Worksheet time: 10mins
What is the function of a septic tank in a sewage treatment system?
D. Sedimentation
C. Aeration
B. Digestion
A. Filtration
What is the typical waste-water flow rate per person per day in a septic tank system?
A. 100 L
D. 300 L
B. 150 L
C. 225 L
What is the recommended length-to-width ratio for a septic tank design?
C. 3:1
A. 1:1
D. 4:1
B. 2:1
What is the purpose of a soil absorption system in a sewage treatment system?
B. Act as a natural filter
D. Reduce water flow rate
A. Increase sludge generation
C. Enhance aeration
What is the sewage retention time for the septic tank in the given example for a small village?
D. 4 days
A. 1 day
B. 2 days
C. 3 days
What is the primary purpose of a septic tank in a sewage treatment system?
A. Sedimentation
B. Aeration
C. Digestion
D. Filtration
What is the optimal depth range for a septic tank to effectively treat sewage?
A. 1-2 meters
B. 2-3 meters
C. 3-4 meters
D. 4-5 meters
What is the typical lifespan of a well-maintained septic tank system?
A. 10-15 years
B. 20-25 years
C. 30-35 years
D. 40-45 years
What is the primary function of a septic tank in a sewage treatment system?
A. Sedimentation
B. Aeration
C. Digestion
D. Filtration
What is the recommended sewage retention time for a septic tank in a residential area?
A. 1 day
B. 2 days
C. 3 days
D. 4 days
What is the typical waste-water flow rate per person per day in a septic tank system?
A. 100 L
B. 150 L
C. 225 L
D. 300 L
What is the primary function of a septic tank in a sewage treatment system?
A. Sedimentation
B. Aeration
C. Digestion
D. Filtration
What is the optimal depth range for a septic tank to effectively treat sewage?
A. 1-2 meters
B. 2-3 meters
C. 3-4 meters
D. 4-5 meters
What is the recommended length-to-width ratio for a septic tank design?
C. 3:1
A. 1:1
D. 4:1
B. 2:1
What is the recommended distance between a septic tank and a water source to prevent contamination?
A. 10 feet
B. 20 feet
C. 30 feet
D. 40 feet
What is the function of a baffle in a septic tank system?
A. Increase sludge generation
B. Enhance aeration
C. Prevent scum from exiting the tank
D. Reduce water flow rate
What is the primary role of bacteria in a septic tank system?
A. Increase sludge generation
B. Enhance aeration
C. Break down organic matter
D. Reduce water flow rate
What is the primary function of a septic tank in a sewage treatment system?
A. Sedimentation
B. Aeration
C. Digestion
D. Filtration
What is the typical lifespan of a well-maintained septic tank system?
A. 10-15 years
B. 20-25 years
C. 30-35 years
D. 40-45 years
What is the purpose of a soil absorption system in a sewage treatment system?
B. Act as a natural filter
D. Reduce water flow rate
A. Increase sludge generation
C. Enhance aeration
