FLORIDA WASTEWATER ACTUAL EXAM COMPLETE 200
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+
Prepare to feed a greater quantity of chemicals - ANSWER: When operating an
advanced treatment facility using chemical treatment for solids removal, you
discover high flows entering the system, you should?
When using Polymer in a gravity thickening process for sludge, when would more
polymer dosages be required? when the: - ANSWER: Hydraulic loading rate increases
When bacteria laden with phosphorus are faced with a parent death, they: -
ANSWER: Release phosphorus from their cell structure in large quantities
Head loss in a gravity filter is determined by - ANSWER: Measuring the water
pressure above and below the filter media
What dosage of chlorine can be fatal in just a few breaths - ANSWER: 1000 ppm
Which statement best describes at which speed a belt filter press should be
operated - ANSWER: The ideal belt speed is the slowest. The operator can maintain
without washing out the belt.
What steps should the operator take if washing out occurs while operating a belt
filter press? - ANSWER: Lower flow rate, and increase belt speed
A problem with plastic pipe laterals resting on the surface in a spray irrigation system
is - ANSWER: The pipe can deteriorate due to exposure to sunlight
FDEP approved continuous online analyzing of reclaimed water effluent includes
analyzing for: - ANSWER: pH chlorine residual turbidity
Lime is used more frequently for phosphorus removal than aluminum sulfate
because aluminum sulfate: - ANSWER: Is more expensive than lime
Preventative maintenance of electrical motors includes - ANSWER: Keeping the
motor clean of dust dirt and moisture
What process control adjustment should be made when a 30 minute settleometer
test shows fast solids settling leaving and pin point flic? Increase the: - ANSWER:
WAS rate
According to chapter 62-600 FAC domestic wastewater facilities, the basic
disinfection requirement using chlorine is a: - ANSWER: 0.5 mg/L minimum total
chlorine after 15 minutes contact time at peak hourly flow.
, In an aerobic digester excessive hair rates can contribute to: - ANSWER: Foaming
problems
A common operational problem that can occur with ammonia, stripping towers
involves - ANSWER: Scale formation due to calcium carbonate buildup
What causes a loss of vacuum in a vacuum filter? - ANSWER: Filter media
misalignment or tear
Chapter 62-620 FAC, wastewater facility permitting, the permittee shall retain
treatment facility operating records for how many calendar years? - ANSWER: 3
years
A chlorinator with automatic proportional-to-flow controls will not feed enough
chlorine to produce the proper residual. Sampling shows that at some hours of the
day there is an adequate residual however, at other times there is not. Which of the
following would correct the chlorine problem: - ANSWER: Repair/adjust the
automatic control features of the chlorinator
In Lakes and deeper rivers, cold waters tend to slip below warmer waters because? -
ANSWER: Cold water is heavier or has a greater density
The plant effluent coliform count has failed to meet the required standards for
disinfection. The supply of disinfectant is not the problem. There is an adequate
chlorine residual. To confirm the cause it is most relevant to check the? - ANSWER:
Chlorine Contact Chamber for short circuiting
Chapter 62-602, FAC, drinking water and domestic waste water treatment plant
operators. The operator must report to the department any serious plant breakdown
or condition causing or likely to cause any discharge not in compliance with the
treatment plant permit within how many hours of the occurrence? - ANSWER: 24
hours
How is the fecal coliform parameter evaluated? - ANSWER: The concentration is
estimated by using the most probable number (MPN)method or the membrane filter
(MF) method
When reading the level of a column of liquid in a graduated cylinder, burette or
monometer you should? - ANSWER: View the liquid level from an elevation, equal to
the liquid level and read the top of two liquid level lines
Secondary clarifiers are showing straggler floc lost over weirs. Microscopic exam
shows few free swimmers, majority a flagellates. SVI is increasing. What visual
observation and test results would you expect? - ANSWER: Light brown-to-white
foam, increasing F/M ratio, falling SRT and increasing turbidity
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+
Prepare to feed a greater quantity of chemicals - ANSWER: When operating an
advanced treatment facility using chemical treatment for solids removal, you
discover high flows entering the system, you should?
When using Polymer in a gravity thickening process for sludge, when would more
polymer dosages be required? when the: - ANSWER: Hydraulic loading rate increases
When bacteria laden with phosphorus are faced with a parent death, they: -
ANSWER: Release phosphorus from their cell structure in large quantities
Head loss in a gravity filter is determined by - ANSWER: Measuring the water
pressure above and below the filter media
What dosage of chlorine can be fatal in just a few breaths - ANSWER: 1000 ppm
Which statement best describes at which speed a belt filter press should be
operated - ANSWER: The ideal belt speed is the slowest. The operator can maintain
without washing out the belt.
What steps should the operator take if washing out occurs while operating a belt
filter press? - ANSWER: Lower flow rate, and increase belt speed
A problem with plastic pipe laterals resting on the surface in a spray irrigation system
is - ANSWER: The pipe can deteriorate due to exposure to sunlight
FDEP approved continuous online analyzing of reclaimed water effluent includes
analyzing for: - ANSWER: pH chlorine residual turbidity
Lime is used more frequently for phosphorus removal than aluminum sulfate
because aluminum sulfate: - ANSWER: Is more expensive than lime
Preventative maintenance of electrical motors includes - ANSWER: Keeping the
motor clean of dust dirt and moisture
What process control adjustment should be made when a 30 minute settleometer
test shows fast solids settling leaving and pin point flic? Increase the: - ANSWER:
WAS rate
According to chapter 62-600 FAC domestic wastewater facilities, the basic
disinfection requirement using chlorine is a: - ANSWER: 0.5 mg/L minimum total
chlorine after 15 minutes contact time at peak hourly flow.
, In an aerobic digester excessive hair rates can contribute to: - ANSWER: Foaming
problems
A common operational problem that can occur with ammonia, stripping towers
involves - ANSWER: Scale formation due to calcium carbonate buildup
What causes a loss of vacuum in a vacuum filter? - ANSWER: Filter media
misalignment or tear
Chapter 62-620 FAC, wastewater facility permitting, the permittee shall retain
treatment facility operating records for how many calendar years? - ANSWER: 3
years
A chlorinator with automatic proportional-to-flow controls will not feed enough
chlorine to produce the proper residual. Sampling shows that at some hours of the
day there is an adequate residual however, at other times there is not. Which of the
following would correct the chlorine problem: - ANSWER: Repair/adjust the
automatic control features of the chlorinator
In Lakes and deeper rivers, cold waters tend to slip below warmer waters because? -
ANSWER: Cold water is heavier or has a greater density
The plant effluent coliform count has failed to meet the required standards for
disinfection. The supply of disinfectant is not the problem. There is an adequate
chlorine residual. To confirm the cause it is most relevant to check the? - ANSWER:
Chlorine Contact Chamber for short circuiting
Chapter 62-602, FAC, drinking water and domestic waste water treatment plant
operators. The operator must report to the department any serious plant breakdown
or condition causing or likely to cause any discharge not in compliance with the
treatment plant permit within how many hours of the occurrence? - ANSWER: 24
hours
How is the fecal coliform parameter evaluated? - ANSWER: The concentration is
estimated by using the most probable number (MPN)method or the membrane filter
(MF) method
When reading the level of a column of liquid in a graduated cylinder, burette or
monometer you should? - ANSWER: View the liquid level from an elevation, equal to
the liquid level and read the top of two liquid level lines
Secondary clarifiers are showing straggler floc lost over weirs. Microscopic exam
shows few free swimmers, majority a flagellates. SVI is increasing. What visual
observation and test results would you expect? - ANSWER: Light brown-to-white
foam, increasing F/M ratio, falling SRT and increasing turbidity
