Source Water
Quadruple Jeopardy!
Which of the following is more likely to be found in groundwater?
a. Natural organic matter
b. Minerals
c. Coliform bacteria
d. Cryptosporidium
b. Minerals
Adding sodium hypochlorite to water will have the following effect:
a. Create a slightly acidic solution
b. Increase pH
c. Decrease pH
d. Have no impact
b. Increase pH
Which of the following is an indicator organism for pathogens?
a. Cryptosporidium
b. Cyst
c. Coliform
d. Giardia
c. Coliform
What is the purpose of a shaft sleeve in a pump?
a. Converts velocity of the water from the impeller into pressure
b. Protects shaft from wear at stuffing box
c. Provides kinetic energy to the water
d. prevents entry of debris into pump
b. Protects shaft from wear at stuffing box
Which of the following is the correct laboratory procedure?
a. Add water to acid
b. Titrate water to acid
c. Mix acid with a pH of 2 with a base of pH 12
d. Add acid to water
d. Add acid to water
What is the aquifer typically composed of?
a. Sand and gravel
b. Fine clay
c. Bedrock
d. Fine silt
a. Sand and gravel
Double Jeopardy!
What will happen to the water quality if chlorine is injected at the same location as power activated carbon (PAC)?
a. Trihalomethane will form
b. The combination will create a toxic fume
c. Chlorine will react with carbon and neutralize the effects of both
d. Chlorine will not react with PAC
c. Chlorine will react with carbon and neutralize the effects of both
What is performed to evaluate susceptibility to potential threats and identify corrective actions that can reduce or mitigate the risk for a water system?
a. Sanitary survey
b. Phase 1
c. Sequestration
d. Vulnerability assessment
d. Vulnerability assessment
What would cause a filter to begin backwashing?
a. Low chlorine concentration
b. Presence of THM
c. Head loss
d. Temperature
c. Head loss
Which of the following devices will give you a the hydrogen ion concentration?
a. Hydrometer
b. Turbidimeter
c. pH meter
d. Ionic meter
c. pH meter
What is a likely discharge of industrial waste found in surface water?
a. Trihalomethane
b. Haloacetic acid
c. Organic solvents
d. Ozone
c. Organic solvents
Which of the following is a typical form of calcium hypochlorite?
a. 65% solid tablet
b. 12.5% liquid solution
c. 19% liquid solution
d. 12.5% solid tablet
a. 65% solid tablet
Triple Jeopardy!
Which of the following would increase alkalinity in the water?
a. CaCO3
b. Iron
c. Manganese
d. CO2
a. CaCO3
Get this question right...and win 300 points while the opposing team loses 300....
What is the purpose of a lantern ring in a centrifugal pump?
a. Increase pressure
b. Minimize cavitation
c. Prime the pump
d. Provide lubrication and cooling
d. Provide lubrication and cooling
Triple Jeopardy!
How long should the tap remain turned off before grabbing a sample for a lead and copper test?
a. 30 minutes
b. 1 hour
c. 6 hours
d. 2 hours
c. 6 hours
What is the amount of water that can be withdrawn from an aquifer without significant environmental impact?
a. Well drawdown
b. Safe yield
c. Cone of depression
d. Specific yield
b. Safe yield
Frosting around the outlet connection of a chlorine gas cylinder indicates which of the following?
a. Increase in chlorine gas flow to chlorinator
b. Reduced flow of chlorine gas
c. Low water temperature
d. evaporator water level is low
b. Reduced flow of chlorine gas
If you get this question correct...You can add 400 points to your team, or remove 400 points from the opposing team...
What are colloidal particles?
a. Very small particles that do not dissolve and remain dispersed in a liquid for a long time due to their small size and electrical charge
b. Settleable solids
c. Large sized particles
d. Sand
a. Very small particles that do not dissolve and remain dispersed in a liquid for a long time due to their small size and electrical charge
What is short circuiting in a clarifier?
a. Electrical problems in the control panel
b. Negative electrical charge on a colloid
c. Electrical charge neutralized by alum
d. Shorter settling time in basin
d. Shorter settling time in basin
Why is trihalomethane considered to be harmful?
a. Causes Blue Baby Syndrome
b. Increases blood pressure
c. Elevates lead concentration in water
d. It is a carcinogen
d. It is a carcinogen
Double Jeopardy!
What is a typical characteristic of a colloidal particle in raw water?
a. Positive charge on the surface
b. Negative charge on the surface
c. Neutral charge on the surface
d. Cationic attributes
b. Negative charge on the surface
What typically occurs at the beginning of a breakpoint chlorination curve?
a. Formation of chloramines
b. Chloramines partly destroyed
c. Free available residual formed
d. Chlorine destroyed by reducing compounds
d. Chlorine destroyed by reducing compounds
What is used to lower pH in water?
a. CO2
b. CaCO3
c. NaOCl
d. Ammonia
a. CO2
What are the 4 zones of a clarifier?
a. Inlet, outlet, settling, sludge
b. Inlet, outlet, settling, skimming
c. Inlet, outlet, settling, baffles
d. Settling, baffles, skimming, sludge
b. Inlet, outlet, settling, skimming
What is used to evaluate new coagulants or polymers being considered for use at the plant?
a. DPD test
b. MPN method
c. Jar test
d. Colilert method
c. Jar test