Font size
WorksheetsChemCom Water and Waste Water Treatment
Total questions: 23
Worksheet time: 23mins
What are two goals that our water treatment plant fulfill?
Clean and disinfect the water
Boil and evaporate the water
Remove the animals and plants
Add chemicals and remove pesticides
The water treatment plant operates
24 hours a day, 5 days a week
all the time
every day, but not at night
not on holidays
This picture shows....
irrigation
aeration
chlorination
filtering
When is fluoride added in water treatment?
First step, before filtering
Second step, with the alum
In the middle of the treatment
Next to the last step, just before it gets to your home
What is removed in primary phase wastewater treatment, as the wastewater is sent to a settling tank and left undisturbed?
bacteria
pathogens
sludge
grit
In the wastewater treatment process, what is added to to the wastewater to kill pathogens?
grit
bacteria
sodium bisulfate
chlorine
In a wastewater treatment plant, what gas must be maintained at precise levels in the aeration tank?
CO2
O2
H2
CO
97% of the water on earth is _________, making it undrinkable for humans.
polluted fresh water
ground water
salt water
polluted surface water
Certain types of bacteria are beneficial to wastewater treatment because
they naturally break down organic matter
they help solid material to settle out of the wastewater
the nutrients produced are beneficial to the treated water
they aren't beneficial
A ______________________ is an organism that causes illness or disease.
potable
porosity
pathogen
permeability
The most widely used solvent is_____________.
acid
alcohol
nitrogen
water
A series of underground pipes that carry used water to a treatment plant is called what?
Filtration system
Sewer system
Septic System
Drainage system
An underground tank containing bacteria that helps clean waste water is a .....
septic tank
leach field
water treatment plant
What makes hard water?
Silver and Sodium
Calcium and Magnesium
Gold
Sodium
