Name two gases produced during secondary treatment by sewage.

What is "Secondary treatment" of sewage?

Name two sugar producing plants?

Name the micro-organisms involved in secondary treatment of sewage.

In an aerobic sludge digestion during secondary treatment of sewage, biogas is produced which is a mixture of:

Explain the different steps involved in the secondary treatment Of sewage.

Name two main gases of air.

What is sewage? Differentiate between primary and secondary treatment of sewage.

What is sewage ? Differentiate between primary and secondary treatment of sewage.

Define sewage. Explain the secondary treatment of sewage.