Water Treatment

improved water quality can be achieved by

• appropriate use of water

• careful water storage and handling

• proper land management

• all of the above

Tags

NGSS.MS-ESS3-3

A factory is located next to a river.  The factory has a sewage pipe running straight out of the factory and into the river.  This is an example of ________________________.

• point source pollution
• non-point pollution
• tertiary receiving stream
• primary treatment

Tags

NGSS.HS-ESS2-5

pollutants entering waterways from a general area, such as runoff from farmland or suburban communities

• Pollution
• Point Source Pollution
• Non-point Source Pollution
• Turbidity

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

What are two things that water treatment plants need to do?

• Clean and disinfect the water
• Boil and evaporate the water
• Remove the animals and plants
• Add chemicals and remove pesticides

Tags

NGSS.MS-PS1-2

What is the first step in the water treatment process?

• coagulation

• filtration and removal of debris, sand, grit, etc.

• flocs

• concentation

Preliminary treatment

• prevents toxic chemicals.

• removes large objects.

• is unnecessary.

• is useless.

Tags

NGSS.MS-PS1-2

Which substance is used in a sewage treatment system to kill harmful bacteria?

• ammonia

• chlorine

• sand

• soap

What gas must be maintained at precise levels in the aeration tank?

• CO₂
• O₂
• H₂
• CO

The final step of the water treatment process is...

• Coagulation

• Disinfection

• Filtration

• Sedimentation

• Flocculation

What is the purpose of using ultraviolet light on the water?

• To bleach it out
• To "sterilize" any bacteria 
• To remove chlorine
• To kill viruses

Tags

NGSS.HS-ESS3-4