AWWA OpCert Exam Prep - Treatment
Process
What type of chemical(s) is polymers
(are) used to pretreat
alum sludge when
mechanical equipment is
used for dewatering?
What is the reason that floc Improper hydraulic conditions
particles are carried over a
weir in a sedimentation
basin?
If aluminum sulfate were 3:1
used with caustic soda,
what would be the typical
dosage ratio,
respectively?
If a water plant is feeding a 75 mg/L
sodium fluoride solution,
the water used to make the
solution should be softened
if it exceeds
_____as calcium carbonate.
Giardia and filtration, Giardia, Cryptosporidium
Cryptosporidium are
typically removed by
___________________can be
inactivated by
sufficient C × T values
employing chlorine,
but__________________is
considered to be resistant to
chlorine.
Ammonia cylinders are 20% - 25%
usually used rather than
one-tons as with chlorine
because ammonia is fed
at about_____________of the
amount of chlorine used.
What chemical used for Ozone
oxidizing iron and
manganese has a high
, cost in equipment,
operation, and
maintenance, and if
excessive quantities are
used, it can oxidize
manganese to
permanganate and cause
pink water?
Process
What type of chemical(s) is polymers
(are) used to pretreat
alum sludge when
mechanical equipment is
used for dewatering?
What is the reason that floc Improper hydraulic conditions
particles are carried over a
weir in a sedimentation
basin?
If aluminum sulfate were 3:1
used with caustic soda,
what would be the typical
dosage ratio,
respectively?
If a water plant is feeding a 75 mg/L
sodium fluoride solution,
the water used to make the
solution should be softened
if it exceeds
_____as calcium carbonate.
Giardia and filtration, Giardia, Cryptosporidium
Cryptosporidium are
typically removed by
___________________can be
inactivated by
sufficient C × T values
employing chlorine,
but__________________is
considered to be resistant to
chlorine.
Ammonia cylinders are 20% - 25%
usually used rather than
one-tons as with chlorine
because ammonia is fed
at about_____________of the
amount of chlorine used.
What chemical used for Ozone
oxidizing iron and
manganese has a high
, cost in equipment,
operation, and
maintenance, and if
excessive quantities are
used, it can oxidize
manganese to
permanganate and cause
pink water?
