Water Treatment Plant Operation Volume 2 - ch 8 Plant maintenance
, Determine the chemical 4 kg/d
feed rate in kilograms of
polymer per day from a
chemical feed pump. The
polymer solution is 2.3
percent or 23,000 milligrams
of polymer per liter. Assume a
specific gravity of the polymer
solution of 1.0. During a test
run, the chemical feed pump
delivered 720 milliliters of
polymer solution in 6 minutes.
What do gas feeders primarily Chlorine
handle at water treatment
plants?
What is the most common type Squirrel cage induction motor
of electric motor?
What type of pump is Progressive cavity pump
recommended for moving
materials containing higher
concentrations of
suspended solids?
Who should remove the tag or Only the operator performing the maintenance work
lockout device when
equipment is ready to be
brought back into service
after maintenance?
How many cells does a 12-volt Six
battery have?
With what equipment can Variable frequency drives
motors be operated at
different speeds to better
control equipment and
processes and save energy?
What can ammeters be used to Current or amps flowing in the circuit
measure?
Why should a chain belt not be Reduces the life of both the chain and sprocket
tight around the sprocket?
What type of valve uses a Butterfly
machined disc that can be
opened to 90 degrees to
allow full flow through the
valve?
What part of a pump acts as Volute
the shell, cover, or housing
that protects most of its
, Determine the chemical 4 kg/d
feed rate in kilograms of
polymer per day from a
chemical feed pump. The
polymer solution is 2.3
percent or 23,000 milligrams
of polymer per liter. Assume a
specific gravity of the polymer
solution of 1.0. During a test
run, the chemical feed pump
delivered 720 milliliters of
polymer solution in 6 minutes.
What do gas feeders primarily Chlorine
handle at water treatment
plants?
What is the most common type Squirrel cage induction motor
of electric motor?
What type of pump is Progressive cavity pump
recommended for moving
materials containing higher
concentrations of
suspended solids?
Who should remove the tag or Only the operator performing the maintenance work
lockout device when
equipment is ready to be
brought back into service
after maintenance?
How many cells does a 12-volt Six
battery have?
With what equipment can Variable frequency drives
motors be operated at
different speeds to better
control equipment and
processes and save energy?
What can ammeters be used to Current or amps flowing in the circuit
measure?
Why should a chain belt not be Reduces the life of both the chain and sprocket
tight around the sprocket?
What type of valve uses a Butterfly
machined disc that can be
opened to 90 degrees to
allow full flow through the
valve?
What part of a pump acts as Volute
the shell, cover, or housing
that protects most of its
