WASTEWATER OPERATOR CLASS 1 & 2
ACTUAL EXAM TEST WITH COMPLETE
QUESTIONS AND CORRECT ANSWERS
RATED A+
What is the primary function of a brush aerator? Correct Answer
To produce great dissolved oxygen (DO)
If the first pond in a series operation is organically overloaded,
how should the flow be controlled? Correct Answer They should
be switched to parallel operation
What should the operator do with plants/weeds growing along the
water's edge with respect to ponds? Correct Answer Remove
them as they appear to avoid the establishment of a deep root
system
How should lantern rings be installed on the stuffing box as part of
a pump unit? Correct Answer Completely filled with grease before
all the rings of packing are in place.
What are the pH parameters outlined by KPDES in the process of
wastewater treatment? Correct Answer 6.0 - 9.0 ppm
,The explosive range of the main product of anaerobic digestion,
methane, is in the range of: Correct Answer 5-15%
Recirculation in a tricking filter operation is sometimes used with
trickling filters to: Correct Answer Keep the media wet during low
flow periods, dilute the organic strength of the influent, and
smooth out diurnal flow fluctuations
Small quantities of sludge should be pumped often in primary
clarifiers to: Correct Answer To prevent hydraulic & organic
overloading of the digester and to keep sludge blankets down so
that the septic "floating" sludge will not result.
In an active oxidation ditch, how long should a measured amount
of wastewater treated before going to the next stage? Correct
Answer 18-36 hours
Fish such as salmon and trout cannon tolerate more than trace
amounts of chlorine. therefore, a total residual chlorine monthly
limits for zero flow streams are set at: Correct Answer 0.01 mg/L
The most severe penalties an operator can be subjected to for
negligence and violation of EPA regulations are: Correct Answer
Civil or criminal penalties
, In an active oxidation ditch, what flow can the operator control?
Correct Answer Return sludge flow and waste sludge flow
What should the operator do when algae forms on a lagoon?
Correct Answer Nothing, it produces oxygen
Samples to be analyzed for ammonia can be held: Correct
Answer 28 days, preserved with H2SO4 (Sulfiric acid) to a pH
<2.0 at 4°C
Sludge blanket depths may be measured by using what
instrument(s) Correct Answer Sludge judge, sludge light, and core
taker
What is the recommended way of keeping weed growth down in
ponds? Correct Answer Maintain a depth of at least 3 feet
What are stuffing boxes used for on a pump? Correct Answer To
prevent air from being sucked into the pump
The aeration basin if operated within recommended parameter,
will contain: Correct Answer Light colored foam that dissipated
after traveling a short distance
ACTUAL EXAM TEST WITH COMPLETE
QUESTIONS AND CORRECT ANSWERS
RATED A+
What is the primary function of a brush aerator? Correct Answer
To produce great dissolved oxygen (DO)
If the first pond in a series operation is organically overloaded,
how should the flow be controlled? Correct Answer They should
be switched to parallel operation
What should the operator do with plants/weeds growing along the
water's edge with respect to ponds? Correct Answer Remove
them as they appear to avoid the establishment of a deep root
system
How should lantern rings be installed on the stuffing box as part of
a pump unit? Correct Answer Completely filled with grease before
all the rings of packing are in place.
What are the pH parameters outlined by KPDES in the process of
wastewater treatment? Correct Answer 6.0 - 9.0 ppm
,The explosive range of the main product of anaerobic digestion,
methane, is in the range of: Correct Answer 5-15%
Recirculation in a tricking filter operation is sometimes used with
trickling filters to: Correct Answer Keep the media wet during low
flow periods, dilute the organic strength of the influent, and
smooth out diurnal flow fluctuations
Small quantities of sludge should be pumped often in primary
clarifiers to: Correct Answer To prevent hydraulic & organic
overloading of the digester and to keep sludge blankets down so
that the septic "floating" sludge will not result.
In an active oxidation ditch, how long should a measured amount
of wastewater treated before going to the next stage? Correct
Answer 18-36 hours
Fish such as salmon and trout cannon tolerate more than trace
amounts of chlorine. therefore, a total residual chlorine monthly
limits for zero flow streams are set at: Correct Answer 0.01 mg/L
The most severe penalties an operator can be subjected to for
negligence and violation of EPA regulations are: Correct Answer
Civil or criminal penalties
, In an active oxidation ditch, what flow can the operator control?
Correct Answer Return sludge flow and waste sludge flow
What should the operator do when algae forms on a lagoon?
Correct Answer Nothing, it produces oxygen
Samples to be analyzed for ammonia can be held: Correct
Answer 28 days, preserved with H2SO4 (Sulfiric acid) to a pH
<2.0 at 4°C
Sludge blanket depths may be measured by using what
instrument(s) Correct Answer Sludge judge, sludge light, and core
taker
What is the recommended way of keeping weed growth down in
ponds? Correct Answer Maintain a depth of at least 3 feet
What are stuffing boxes used for on a pump? Correct Answer To
prevent air from being sucked into the pump
The aeration basin if operated within recommended parameter,
will contain: Correct Answer Light colored foam that dissipated
after traveling a short distance
