Quiz on Sewage Treatment System

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