WasteWater Operator Certification Study Guide Grade 1
Questions With Complete Solutions
Activated Sludge:
A primary effluent and returned activated sludge mixture is
called Correct Answers waste activated sludge
Activated Sludge:
A yellow gas flame from a digester's waste gas burner may
indicate a poor quality gas with a Correct Answers high CO2
content
Activated Sludge:
The main "workers" in the activated sludge process are Correct
Answers bacteria
Activated Sludge:
The mixture of organisms and solids in water that is removed
from the settling tank is called Correct Answers mixed liquor
Activated Sludge:
Under normal operating conditions, what color is activated
sludge Correct Answers dark chocolate brown
Activated Sludge:
,What test(s) could an operator use to make process changes
immediately if a problem develops Correct Answers COD test
Basic Chemistry:
Describe "colloids" Correct Answers an ion opposite in charge
to a colloidal particle will force its way into the colloidal particle
Basic Chemistry:
People working in and around wastewater must be immunized
for Correct Answers tetanus
Basic Chemistry:
The electrical potential between two points is measured in
Correct Answers volts
Basic Chemistry:
Water is used as a standard because it has unique properties and
is readily available in its pure state. Which standard is not
correct?
a. Celsius scale
b. the calorie
c. the kilogram
d. specific gravity Correct Answers the kilogram
Basic Chemistry:
, What acids are formed when water reacts with nonmetal oxides?
a. acid hydroxides
b. acid anhydrides
c. acid oxides
d. acid hydrates Correct Answers acid anhydrides
Basic Chemistry:
What is the most common use today for a positive-displacement
pump Correct Answers chemical feed pump
Basic Chemistry:
What piece of laboratory glassware is primarily used to mix
checmicals and measure approximately volumes? Correct
Answers beaker
Basic Chemistry:
Which lab glassware is used for measuring volumes Correct
Answers graduated cylinders
Basic Chemistry:
Which lab glassware will give the most accurate measurements
of liquids Correct Answers burettes
Basic Chemistry:
Questions With Complete Solutions
Activated Sludge:
A primary effluent and returned activated sludge mixture is
called Correct Answers waste activated sludge
Activated Sludge:
A yellow gas flame from a digester's waste gas burner may
indicate a poor quality gas with a Correct Answers high CO2
content
Activated Sludge:
The main "workers" in the activated sludge process are Correct
Answers bacteria
Activated Sludge:
The mixture of organisms and solids in water that is removed
from the settling tank is called Correct Answers mixed liquor
Activated Sludge:
Under normal operating conditions, what color is activated
sludge Correct Answers dark chocolate brown
Activated Sludge:
,What test(s) could an operator use to make process changes
immediately if a problem develops Correct Answers COD test
Basic Chemistry:
Describe "colloids" Correct Answers an ion opposite in charge
to a colloidal particle will force its way into the colloidal particle
Basic Chemistry:
People working in and around wastewater must be immunized
for Correct Answers tetanus
Basic Chemistry:
The electrical potential between two points is measured in
Correct Answers volts
Basic Chemistry:
Water is used as a standard because it has unique properties and
is readily available in its pure state. Which standard is not
correct?
a. Celsius scale
b. the calorie
c. the kilogram
d. specific gravity Correct Answers the kilogram
Basic Chemistry:
, What acids are formed when water reacts with nonmetal oxides?
a. acid hydroxides
b. acid anhydrides
c. acid oxides
d. acid hydrates Correct Answers acid anhydrides
Basic Chemistry:
What is the most common use today for a positive-displacement
pump Correct Answers chemical feed pump
Basic Chemistry:
What piece of laboratory glassware is primarily used to mix
checmicals and measure approximately volumes? Correct
Answers beaker
Basic Chemistry:
Which lab glassware is used for measuring volumes Correct
Answers graduated cylinders
Basic Chemistry:
Which lab glassware will give the most accurate measurements
of liquids Correct Answers burettes
Basic Chemistry:
