"Flow Chart Student Worksheet With Answer Key"

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Name
Date
Flow Chart
Student Worksheet
START
1
2
3
13
4
6
5
9
7
10
8
12
Journey of Water
• 3 1
Name
Date
Flow Chart
Student Worksheet
START
1
2
3
13
4
6
5
9
7
10
8
12
Journey of Water
• 3 1
Flow Chart
Answer Key
START
1
Collec-
tion
2
Runs through
bar screens
3
Sand removal
13
4
Solids
Settle out solids
disposal
(sedimentation)
6
5
Solids
treatment tank
Effluent to
aerator
Solids to
9
treatment tank
7
Aerate
Send effluent
10
8
to filter
Send to
secondary
Filter
settling
Disinfect
Sedimentation
settling tank
12
Discharge into
lake or stream
3 2 •
Circles and Cycles
Name
Date
Flow Chart Directions
Student Worksheet
Steps To Clean Water:
1.
Intake wastewater (collection)
2.
Run through bar screens
3.
Remove sand
4.
Settle out solids (sedimentation)
5.
Send solids to wastewater solids treatment tank
6.
Treat solids for disposal
7.
Add bacteria to effluent and aerate
8.
Send to secondary settling tank (sedimentation)
9.
Send solids to wastewater solids treatment tank
10.
Send through filtration
11.
Disinfect using chlorine, ultraviolet light or ozone
12.
Discharge into lake or stream
13.
Dispose of solids
Flow Chart Symbols:
Arrows
Arrows show the direction of the flow of
wastewater from process to process.
Start/Stop
An oval is used to show where the treatment
process starts and stops.
Square
A square is used to show when chemicals are
added to or materials are removed from the
wastewater.
Rectangle
A rectangle is used to show when a treatment
process is taking place.
Diamond
A diamond is used to show when parts of the
wastewater flow go in two different directions.
Journey of Water
• 3 3
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