Sewage Pollution

Waste water generated from paints and dyes industries contains harmful _________

• Germs

• Chemicals

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-3

___________ is the wastewater containing suspended impurities

• Clarified water

• Sewage

__________ is the liquid waste that is discharged into a river or the sea

• Effluent

• Contaminants

Sand, grit and pebbles are removed in ___________

• Aeration tank

• Grit chamber

An excessive growth of _____________ causes Eutrophication

• Algae

• Plants

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

____________ system is a channel system of pipelines used to carry sewage

• Sewer

• Onsite deposition

Air is blown into the sewage in ____________ tanks

• Sedimentation

• Aeration

________________ is produced by the action of bacteria on the organic matter of sludge

• LPG

• Biogas

Which of the following is not a source of wastewater?

• Hospitals

• Rain

• Mining

• Domestic activities

Which one of these is a mechanical process of treating water?

• Screening of sewage

• Aeration of sewage

• Digestion of sewage

• Addition of chlorine to water