A local college has an outbreak of giardia in the water system. A hose that was
connected to a spigot found in a grease trape was determined to be where the
bacteria entered the system. What is this an example of?
a. cross-connection by back siphonage
b. cross-connection by back pressure
c. cross-connection from an unapproved treatment system
d. normal system operation
Give this one a try later!
a. cross-connection by back siphonage
What is the purpose of amber storage bottles?
A. the color is pretty
b. they are cheaper
,c. to protect chemicals that are sensitive to light
d. so you can not see what is inside the container
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c. to protect chemicals that are sensitive to light
How do you calibrate a chemical feed pump?
A. by measuring the pump output
B. using the SWAG method
C. jar test
D. with a microscope
Give this one a try later!
A. by measuring the pump output
Calculate SVI
Given: 30 minute settling test = 1800 mL in a 2000 mL container
MLSS = 4000 mg/L
A. 200
b. 450
c. 225
d. 115
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c. 225
,When organic wastes are discharged to receiving waters, what depletes oxygen?
a. excessive flow
b. bacteria
c. color
d. high pH
Give this one a try later!
b. bacteria
Chlorine gas is what?
a. lighter than air
b. same weight as air
c. heavier than air
d. purple in color
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c. heavier than air
What type of flow meters are used during normal operations of the sludge removal?
a. turbine
b. magnetic
c. TDR
d. paddle wheel
Give this one a try later!
, b. magnetic
Name a device which is used to measure the flow of wastewater?
a. rotometer
b. ruler
c. parshall flume
d. sight glass
Give this one a try later!
c. parshall flume
What information does a mixed liquor test provide?
a. flow into the clarifiers
b. F:M ratio
c. amount of solids in the sample
d. return flow volume
Give this one a try later!
c. amount of solids in the sample
How is an air-gap used?
a. it takes the gap of air and creates space for more bugs
b. to prevent contamination of potable water systems
connected to a spigot found in a grease trape was determined to be where the
bacteria entered the system. What is this an example of?
a. cross-connection by back siphonage
b. cross-connection by back pressure
c. cross-connection from an unapproved treatment system
d. normal system operation
Give this one a try later!
a. cross-connection by back siphonage
What is the purpose of amber storage bottles?
A. the color is pretty
b. they are cheaper
,c. to protect chemicals that are sensitive to light
d. so you can not see what is inside the container
Give this one a try later!
c. to protect chemicals that are sensitive to light
How do you calibrate a chemical feed pump?
A. by measuring the pump output
B. using the SWAG method
C. jar test
D. with a microscope
Give this one a try later!
A. by measuring the pump output
Calculate SVI
Given: 30 minute settling test = 1800 mL in a 2000 mL container
MLSS = 4000 mg/L
A. 200
b. 450
c. 225
d. 115
Give this one a try later!
c. 225
,When organic wastes are discharged to receiving waters, what depletes oxygen?
a. excessive flow
b. bacteria
c. color
d. high pH
Give this one a try later!
b. bacteria
Chlorine gas is what?
a. lighter than air
b. same weight as air
c. heavier than air
d. purple in color
Give this one a try later!
c. heavier than air
What type of flow meters are used during normal operations of the sludge removal?
a. turbine
b. magnetic
c. TDR
d. paddle wheel
Give this one a try later!
, b. magnetic
Name a device which is used to measure the flow of wastewater?
a. rotometer
b. ruler
c. parshall flume
d. sight glass
Give this one a try later!
c. parshall flume
What information does a mixed liquor test provide?
a. flow into the clarifiers
b. F:M ratio
c. amount of solids in the sample
d. return flow volume
Give this one a try later!
c. amount of solids in the sample
How is an air-gap used?
a. it takes the gap of air and creates space for more bugs
b. to prevent contamination of potable water systems
