Sewerage Treatment System

What is the simplest sewage treatment system?

• Oxidation pond

• Mechanical plant

• Septic tank

• Imhoff tank

What is not component of mechanical plant?

• Screen

• Aeration tank

• Holding pond

• Grit chamber

What is the function of inspection chamber?

• Inspection

• Flow of sewer

• Rainwater drainage

• Screening

Which sewage treatment system fully used sunlight, bacteria and algae to function?

• Aeration tank

• Imhoff tank

• Oxidation pond

• Septic tank

Aerated lagoons need to be maintained after...

• 8 years

• 5 years

• 10 years

• 15 years