which disinfectant would work best against Cryptosporidium
Ozone
The pH of a Water sample Is greater than the PHs so the Langlier index
indicates the water is scale forming
When water high in calcium bicarbonate is softened by ion exchange
Sodium Bicarbonate remains in the product water
A bypass valve would be used with a
gate valve
Where ground frost is expected the riser pipes in a meter pit should be atleast how far away from any wall of
the meter box to prevent freezing
1-2 inches
,which type of pipe joint is available in both bolted and bolt less flexible pipe joint designs
Ball and Socket Joint
which type of pipe joint permits flexible pipe alignment is inexpensive to manufacture and is easy to assemble
push on joint
new polyvinyl chloride pipe has a c-value of about
150+
which type of valve would be particularly useful for throttling the flow of corrosive liquids
pinch valve
Water meter pits are usually used in
cold climates
,fuel oil will permeate which type of pipe
polyethylene pipe
An ion exchange softener is treating a flow rate of 125 gpm. what is the operating time in hours if the softener
unit treats 297000 gallons before it requires regeneration?
39.6 hr
in describing pump operation what type of curve shows the relationship between power and capacity
P-Q curve
What is Head Loss
energy used by water when moving from point to point
Static Suction Lift
Difference in water placement
, What is Power
Work done in a given time
if a water system collects at least 40 samples per month for the analyses of total coliforms, what percentage
of total coliform samples are acceptable for the system to remain in compliance with the maximum
contaminant level for total coliforms
no more than 5%
water systems are required to achieve at least________ removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination by surface water runoff and a point downstream before
or at the first customer.
4 log
Ozone
The pH of a Water sample Is greater than the PHs so the Langlier index
indicates the water is scale forming
When water high in calcium bicarbonate is softened by ion exchange
Sodium Bicarbonate remains in the product water
A bypass valve would be used with a
gate valve
Where ground frost is expected the riser pipes in a meter pit should be atleast how far away from any wall of
the meter box to prevent freezing
1-2 inches
,which type of pipe joint is available in both bolted and bolt less flexible pipe joint designs
Ball and Socket Joint
which type of pipe joint permits flexible pipe alignment is inexpensive to manufacture and is easy to assemble
push on joint
new polyvinyl chloride pipe has a c-value of about
150+
which type of valve would be particularly useful for throttling the flow of corrosive liquids
pinch valve
Water meter pits are usually used in
cold climates
,fuel oil will permeate which type of pipe
polyethylene pipe
An ion exchange softener is treating a flow rate of 125 gpm. what is the operating time in hours if the softener
unit treats 297000 gallons before it requires regeneration?
39.6 hr
in describing pump operation what type of curve shows the relationship between power and capacity
P-Q curve
What is Head Loss
energy used by water when moving from point to point
Static Suction Lift
Difference in water placement
, What is Power
Work done in a given time
if a water system collects at least 40 samples per month for the analyses of total coliforms, what percentage
of total coliform samples are acceptable for the system to remain in compliance with the maximum
contaminant level for total coliforms
no more than 5%
water systems are required to achieve at least________ removal and or inactivation of viruses between a point
where the raw water is not subject to recontamination by surface water runoff and a point downstream before
or at the first customer.
4 log
