MEDIUM
7th CBSE
IMPORTANT
Earn 100

This image shows how the activated sludge process is used in the treatment of sewage.

Question Image

Why is air supplied to the sewage in the aeration tank?

Important Questions on Waste Management

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 16 - Waste Management>WORKSHEET>Q A

This image shows how the activated sludge process is used in the treatment of sewage.

Question Image

A fault at this water treatment site results in the release of untreated sewage into the river. Suggest the effects that this may have.

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 16 - Waste Management>WORKSHEET>Q B
Make a flowchart of the primary, secondary and tertiary levels of wastewater treatment.