Sedimentation
The most important test to indicate proper sedimentation.
What is turbidity?
A tank has a length of 100 ft, a width of 25 ft, and a depth of 15 ft. Find is the surface area in ft².
What is 2500 ft²?
When running the test for available phosphates, if phosphates are present in the water sample it will turn this color.
What is blue?
Centrifugal, positive displacements, and turbine are types of this___.
What are pumps?
The amount of time between the end of the month and when the MOR for that month must be submitted to the DWS.
What is 10 days?
This test is often used to determine if short-circuiting is occurring.
What is dye tracing?
A clarifier has a diameter of 82 ft and a depth of 12 ft. Find the length of the weir around the clarifier in ft.
What is 257 ft?
This test can be used to determine the optimal dose for a polymer.
What is a jar test?
Tubercules can form on this type of pipe.
What is ductile iron?
When a water plant is not in operation and the water plant operator is not in attendance the plant entrances shall be this.
What is locked?
A metal, wooden, or plastic plate installed in the flow of water to slow the velocity and provide a uniform distribution of flow.
What is a baffle?
A pump must pump 3,000 gpm against a total head of 25 ft. Find the horsepower required to do the work.
What is 18.9 HP?
This color indicator reacts with chlorine to form a pink color.
What is DPD?
Air gap separation is measured from the flood level rim of a receiving vessel. This is the minimum separation of a correctly installed air gap.
What is one inch?
All dead end water mains shall be equipped with this.
What is a blow off or suitable flushing mechanism?
The minimum detention time required for a conventional turbidity removal sedimentation basin.
What is 4 hours?
The average flow for a water plant is 6.3 MGD. A jar test indicates that the best alum dosage is 19 mg/L. Find the pounds per day the operator will need to feed.
What is 998.3 lbs/day?
A measure of the ability of water to neutralize a strong acid
What is alkalinity?
A rotating drum lined with finely woven material such as stainless steel, used to remove algae and small debris before they enter the water treatment plant
What is a micro-strainer?
The primary MCL for Nitrite.
What is 1 mg/L?
This type of sedimentation basin combines coagulation, flocculation, and sedimentation into a single treatment unit.
What is a solids contact basin/ upflow clarifier?
A water plant uses 14 lbs of polymer to treat 2 MGD. Find the polymer dose in mg/L.
What is 0.84 mg/L?
The required sample volume for the analysis of total coliform.
What is 100 ml?
An electrical system for preventing corrosion to metals, particulary metallic pipes and tanks.
What is cathodic protection.
The MCL for total coliform is based on this.
What is prescence or absence?