FLORIDA WASTEWATER OPERATOR CLASS
B EXAM 2026 PREMIUM REVIEW SET WITH
DETAILED ANSWER KEY
◉How much dirt do you take out of a trench, that is 350ft long, 2ft
wide, 10ft deep, and the pipe and bedding takes up 1/3 of the hole?
Answer: Capacity Formula= L*W*H= SG FT. 27 Equals Cubic Yard/
Bedding and Pipe Level= Dirt To Go Back,
350*2*10=7000/27=259/3= 86.419
◉Do you pump sludge to a drying bed fast or slow, and why do you
pull the sludge out of the digester slowly? Answer: Slow to promote
drying of the sludge or to not disturb the digestion process.
◉How many feet deep is a trickling filter? Answer: 3-6
◉How many times does chlorine expand when it hits the
atmosphere Answer: 450 to 500
◉The definition of oxygen. Answer: Deficient atmosphere is on that
contains less than 19.5% oxygen
, ◉A 24 hour composite sample was tested for chlorine residual and
found to contain? Answer: (None) (These results indicated that
Residual Chlorination was not present during the 24 hour period)
◉Besides disinfection, chlorination can be used in wastewater
treatment process to? Answer: pre-chlorinate influent for control of
hydrogen sulfide, remove nitrogen by breakpoint chlorination, and
dose RAS for control bulking or foaming and to reduce plugging in a
trickling filter
◉Proper operation of a facultative pond system requires? Answer:
Adequate DO is Maintained at the surface at all times
◉An efficient primary clarifier is expected to remove? Answer: 90%
or better and 30-40% BOD Removal of the influent Settable Solids
◉You have a ditch that is 350 ft long, 2 ft wide and 10 ft deep. After
putting bedding gravel and pipe into the ditch, it fills it by one third.
when you fill the remainder of the ditch, how many cubic yards of
material will be hauled off? Answer: (LxWxD=Cu.Ft 27/3=3rd.)
350x2x10=7000/27/3=86.42 or 87
◉Which of the following is not a recommended procedure under
normal conditions to reduce a control "Bulking" in an activated
sludge system? Answer: Maintain a less than normal amount of
activated sludge
B EXAM 2026 PREMIUM REVIEW SET WITH
DETAILED ANSWER KEY
◉How much dirt do you take out of a trench, that is 350ft long, 2ft
wide, 10ft deep, and the pipe and bedding takes up 1/3 of the hole?
Answer: Capacity Formula= L*W*H= SG FT. 27 Equals Cubic Yard/
Bedding and Pipe Level= Dirt To Go Back,
350*2*10=7000/27=259/3= 86.419
◉Do you pump sludge to a drying bed fast or slow, and why do you
pull the sludge out of the digester slowly? Answer: Slow to promote
drying of the sludge or to not disturb the digestion process.
◉How many feet deep is a trickling filter? Answer: 3-6
◉How many times does chlorine expand when it hits the
atmosphere Answer: 450 to 500
◉The definition of oxygen. Answer: Deficient atmosphere is on that
contains less than 19.5% oxygen
, ◉A 24 hour composite sample was tested for chlorine residual and
found to contain? Answer: (None) (These results indicated that
Residual Chlorination was not present during the 24 hour period)
◉Besides disinfection, chlorination can be used in wastewater
treatment process to? Answer: pre-chlorinate influent for control of
hydrogen sulfide, remove nitrogen by breakpoint chlorination, and
dose RAS for control bulking or foaming and to reduce plugging in a
trickling filter
◉Proper operation of a facultative pond system requires? Answer:
Adequate DO is Maintained at the surface at all times
◉An efficient primary clarifier is expected to remove? Answer: 90%
or better and 30-40% BOD Removal of the influent Settable Solids
◉You have a ditch that is 350 ft long, 2 ft wide and 10 ft deep. After
putting bedding gravel and pipe into the ditch, it fills it by one third.
when you fill the remainder of the ditch, how many cubic yards of
material will be hauled off? Answer: (LxWxD=Cu.Ft 27/3=3rd.)
350x2x10=7000/27/3=86.42 or 87
◉Which of the following is not a recommended procedure under
normal conditions to reduce a control "Bulking" in an activated
sludge system? Answer: Maintain a less than normal amount of
activated sludge
