Water Treatment

What is wastewater?

• Clean water

• Dirty water

• Used water

• Used or dirty water

Which of the following is not a disease caused by drinking unclean water?

• Cholera

• Typhoid

• Dysentery

• Erysipelas

__________ is solid matter that settles at the bottom in the settling tank

• Sludge

• Sewage

• Biological

• Contaminants

Sewage consist mainly of water

• True

• False

Last step in wastewater treatment is a ___________ process

• Chemical

• Mechanical

• Biological

• Physical

What happen if drainage is not properly dispose off-sewage?

• We will not get clean water

• Diseases will spread

• Water will get polluted

• All the above