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24 Cards in this Set
- Front
- Back
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Why are high levels of turbidity removal important? |
So that disinfection is effective in killing or inactivating disease causing organisms |
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Which of the secondary drinking water regulation constituents are under the control of the operator? |
Color Odor Manganese Iron Corrosiveness (COMIC)
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Which of the primary drinking water regulation constituents are under the control of the operator? |
Coliforms Turbidity |
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What does NPDES stand for? |
National pollutant discharge elimination system |
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What are the two major categories of operating records? |
Physical records Performance records |
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What are typical water treatment plant red-alert emergencies? |
Chemical spills Raw water contamination Sabotage Serious injury Fire Chlorine leak |
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What should you do when there is a red-alert emergency? |
Immediately seek outside help |
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What is the best source of information about dangerous chemicals? |
Material safety data sheet (MSDS) |
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What is the single water quality indicator over which operators have the most control? |
Turbidity |
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What is a centrifugal pump? |
A pump consisting of an impeller fixed on a rotating shaft that is enclosed in a casing, and having an inlet and discharge connection. |
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What does it mean to prime a pump? |
Filling a pump casing with water to remove the air. Most pumps must be primed before start up or they will not pump any water |
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What are the three classifications of water meters? |
1. Low flow meters (displacement type) 2. High flow meters (velocity type) 3. Combination meters (compound type) |
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What are the two types of low flow meters? |
Nutating-disc Piston |
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What are the five types of high flow meters? |
Turbine Venturi Propeller Insertion Electronic (TV PIE) |
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What does SCADA stand for? |
Supervisory control and data acquisition system |
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What does SCADA stand for? |
Supervisory control and data acquisition system |
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What is a SCADA System? |
A computer-monitored alarm, response, control, and data acquisition system used to monitor and adjust treatment processes and facilities |
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What is the relationship between temperature and pH? |
As the water temperature goes up, pH goes down They have a negative correlation "Hot Acid!" |
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What are some of the test methods for coliform bacteria? |
Multiple tube fermentation Membrane filter Presence/absence Coliert |
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What is the safe drinking water act (SDWA)? |
Establishes primary regulations and secondary regulations of water quality Developed by the EPA |
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Compliance with MCL regulations is usually measured where? |
The point where water enters the distribution system |
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Water quality is controlled mainly by the application of what three chemicals? |
Alum, polymers, chlorine |
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What are the three signal transmission methods? |
Pneumatic, hydraulic, electronic |
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What is one of the most dangerous of the common alkalis? |
Caustic soda |
