APES: Human Wastewater Treatment

Runoff of sewage and agricultural wastes into coastal waters introduce

• algae growth

• rainwater

• surface runoff

• oil spill

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What 2 important nutrients are tested for in a body of water to check for eutrophication levels?

• nitrates and phosphates
• dissolved oxygen and pH
• CO₂ and O₂
• nitrates and dissolved oxygen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

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.MS-ESS3-3

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

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

"Turbidity" is the measure of a body of water's ____________________________.

• cloudiness
• eutrophication
• temperature change
• flocculation

Tags

NGSS.MS-LS2-4

Which of the following is NOT a desired effect in streams?

• a pH of about neutral
• low salinity
• high temperature
• low nitrates

What is the first step in the water treatment process?

• coagulation
• filtration
• flocs
• concentation

During secondary treatment in the aeration tanks, what is working on the sewage waste?

• micro-organisms
• humans
• air titration
• oxidation/reduction

Tags

NGSS.MS-LS2-3

What happens after second filtration?

• coagulation
• first filtration
• flocs
• chlorination

What does chlorination do to the water?

• Removes microorganisms
• Cleans the water
• Makes the water taste nice
• Removes twigs and sediment

Tags

NGSS.MS-PS1-2