Which of the following chemicals are required in the treatment and fiItration
a. Ferrous sulfate.
b. Ferric chloride.
d. Sodium aluminate.
e. Aluminum sulfate.
g. Sodium bicarbonate.
h. Diatomaceous earth.
Which two chemicals should not be mixed whiIe chemical feeding the erdlator
during the water treatment process?___________________________________.
What does the chemical solution feeder control for the erdlator unit?
The erdlator slurry feeder contains two compartments that supply ____________
and ____________________________ to the coagulant.
Which tank functions as a small auxiIiary clarifer during coagulation?
Which way does the water flow during backwashing? ______________________.