Clean Water (WW)
Water
Collection Systems
Distribution Systems
Grab Bag!
100
Meaning of TNTC.
What is "Too Numerous to Count"?
100
While converting carbonate (CO32-) back to the original bicarbonate (HCO3-), how does recarbonation affect the pH?
What is: it lowers the pH to about 8.8?
100
Most often the first indication that something is wrong in the collection system.
What is Customer Complaints?
100
Most likely problem that causes consumer complaints about chlorine taste in their drinking water.
What is: the chlorine dose is inadequate?
100
The mean of the daily effluent nitrate concentrations for the past 6 days when the daily nitrate measurements were
8.2, 5.3, 6.9, 10.1, 2.3, and 2.6 mg/L.
What is 5.9 mg/L?
200
200
Determines the rate of oxidation of iron and manganese with chloride.
What is Chlorine Residual?
200
The kind of monitoring used to isolate line segments with excessive infiltration.
What is Instantaneous flow monitoring?
200
How a distribution system can be cleared of iron bacteria.
What is Develop a flushing program?
200
Determine the chemical feeder setting in pounds of polyphosphate per day if 0.62 million gallons per day is treated with a dose of 6 milligrams per liter.
What is 31.0 lb/day?
lb/day=MGD×mg/L×8.34
0.62×6=3.72
- 3.72×8.34=31.0
300
Sensors: The property of a conductor that opposes the passage of a current.
What is Density?
300
How spent granular activated carbon is reconditioned after breakthrough occurs.
What is Thermal Reconditioning?
300
The amount of time water quality in nearby waters is monitored after an SSO event.
What is until no adverse impacts are detected?
300
The permit program that regulates process wastes discharged directly to waters of the US.
What is NPDES?
300
Program that may be needed to address frequent odor complaints.
What is Hydrogen Sulfide Control?
400
The discharge requirement that is calculated using flow.
What is Biochemical Oxygen Demand?
400
Place in a treatment plant where nitric acid is most commonly used.
What is the laboratory?
400
Solution to water hammer and negative pressures strong enough to collapse a pipe.
What is installation of air release valves?
400
A limitation of prechlorination.
What is:
It may increase the formation of THMs in raw water. (trihalomethanes)
400
The document that describes strategies, plans and procedures to prepare for & respond to accidents, natural disasters, and malevolent acts?
What is an Emergency Response Plan?
500
The adsorption process that is most commonly used in odor control.
What is the Physical Process?
500
A sanitary defect that could develop in a fluoridation system.
What is Fluoridation chemical not meeting AWWA specifications?
500
Describes the vertical distance from a reference point to the water surface when the water is not moving.
What is static head?
500
500
The most common hydraulic design parameter affecting water velocity in wastewater collection pipes.
That is Slope?