FLORIDA WASTEWATER EVALUATION EXAMS 2025/2026
QUESTIONS WITH ANSWERS RATED A+
✔✔Primary Treatment can achieve what percentage of influent BOD removal? - ✔✔25-
30%
✔✔How many pounds of oxygen are required to convert 1 pound of BOD? - ✔✔1.5
pounds of oxygen
✔✔How many pounds of oxygen are required to convert one pound of ammonia? -
✔✔4.5 pounds of oxygen
✔✔What color is chlorine under normal atmospheric pressure and room temperature? -
✔✔yellow-green gas
✔✔Chlorine gas is how much heavier than air? - ✔✔2.5 times
✔✔Where should an exhaust fan be located in a chlorine room? - ✔✔near the floor
✔✔What emergency kit is used for 150 tons of chlorine? - ✔✔kit A
✔✔What emergency kit is used for 100 tons of chlorine? - ✔✔kit B
✔✔Chlorine effectiveness becomes more reactive as the effluent water pH becomes
________. - ✔✔lower
✔✔Chlorine effectiveness becomes more reactive as the effluent water temperature
becomes ________. - ✔✔higher
✔✔For basic disinfection the state of FL requires a minimum total chlorine residual of
_____ mg/L after _____ minutes contact time at PEAK hourly flow - ✔✔0.5 mg/L and 15
minutes
✔✔Combined Chlorine - ✔✔compounds formed by reactions of hypochlorous acid and
ammonia (chloramine)
✔✔Chlorine Residual is equal to - ✔✔chlorine dose - chlorine demand
✔✔Chlorine maximum draw off rate for a 150 lb cylinder is - ✔✔40 lbs/day
✔✔Chlorine maximum draw off rate for a 1 ton container is - ✔✔400 lbs/day
✔✔Chlorine cylinders have how many fusible plugs on it? - ✔✔6 total (3 on each end)
, ✔✔A 1 ton "full weight" chlorine container weighs - ✔✔3,500 lbs (weight of chlorine
itself is 2,000lbs)
✔✔The 3 amigos that follow each other in decrease and increase are? - ✔✔F/M ratio,
SVI, WAS rate
✔✔Good settling in an undiluted sample, but washout in clarifier indicates
_____________. - ✔✔hydraulic overload
✔✔Slow settling and a crystal clear weir effluent is an indicator of ___________. -
✔✔filamentous bacteria
✔✔Adsorption - ✔✔The process of binding or sticking to a surface.
✔✔Absorption - ✔✔The transport of dissolved substances into cells.
✔✔Aerobic digester lids are covered to ___________. - ✔✔keep heat in
✔✔For aerobic sludge digestion DO should be maintained at _____ to _____ mg/L. -
✔✔1.0 to 2.0 mg/L
✔✔For aerobic sludge digestion pH should be around ________. - ✔✔7.0
✔✔Good anaerobic sludge digestion volatile acid/alkalinity ratio is - ✔✔0.1:1
✔✔What happens in an anaerobic sludge digester when the VA/Alk ratio gets out of
balance? - ✔✔it upset the digester and SOUR occurs
✔✔FL DEP rule 62-600 states that all wastewater facility should have a __________
around it's perimeter. - ✔✔fence
✔✔Fl DEP 62-601 requires that reports are submitted by the ______ of the month for
the previous month. - ✔✔28th
✔✔FL DEP 62-604 requires VERBAL notification of an abnormal event within
__________ and a written report within ________. - ✔✔24 hours and 72 hours
✔✔FL DEP 62-620 requires that records be kept onsite for ________ years. - ✔✔3
years
✔✔The combination of methane and __________ are highly explosive. - ✔✔oxygen
QUESTIONS WITH ANSWERS RATED A+
✔✔Primary Treatment can achieve what percentage of influent BOD removal? - ✔✔25-
30%
✔✔How many pounds of oxygen are required to convert 1 pound of BOD? - ✔✔1.5
pounds of oxygen
✔✔How many pounds of oxygen are required to convert one pound of ammonia? -
✔✔4.5 pounds of oxygen
✔✔What color is chlorine under normal atmospheric pressure and room temperature? -
✔✔yellow-green gas
✔✔Chlorine gas is how much heavier than air? - ✔✔2.5 times
✔✔Where should an exhaust fan be located in a chlorine room? - ✔✔near the floor
✔✔What emergency kit is used for 150 tons of chlorine? - ✔✔kit A
✔✔What emergency kit is used for 100 tons of chlorine? - ✔✔kit B
✔✔Chlorine effectiveness becomes more reactive as the effluent water pH becomes
________. - ✔✔lower
✔✔Chlorine effectiveness becomes more reactive as the effluent water temperature
becomes ________. - ✔✔higher
✔✔For basic disinfection the state of FL requires a minimum total chlorine residual of
_____ mg/L after _____ minutes contact time at PEAK hourly flow - ✔✔0.5 mg/L and 15
minutes
✔✔Combined Chlorine - ✔✔compounds formed by reactions of hypochlorous acid and
ammonia (chloramine)
✔✔Chlorine Residual is equal to - ✔✔chlorine dose - chlorine demand
✔✔Chlorine maximum draw off rate for a 150 lb cylinder is - ✔✔40 lbs/day
✔✔Chlorine maximum draw off rate for a 1 ton container is - ✔✔400 lbs/day
✔✔Chlorine cylinders have how many fusible plugs on it? - ✔✔6 total (3 on each end)
, ✔✔A 1 ton "full weight" chlorine container weighs - ✔✔3,500 lbs (weight of chlorine
itself is 2,000lbs)
✔✔The 3 amigos that follow each other in decrease and increase are? - ✔✔F/M ratio,
SVI, WAS rate
✔✔Good settling in an undiluted sample, but washout in clarifier indicates
_____________. - ✔✔hydraulic overload
✔✔Slow settling and a crystal clear weir effluent is an indicator of ___________. -
✔✔filamentous bacteria
✔✔Adsorption - ✔✔The process of binding or sticking to a surface.
✔✔Absorption - ✔✔The transport of dissolved substances into cells.
✔✔Aerobic digester lids are covered to ___________. - ✔✔keep heat in
✔✔For aerobic sludge digestion DO should be maintained at _____ to _____ mg/L. -
✔✔1.0 to 2.0 mg/L
✔✔For aerobic sludge digestion pH should be around ________. - ✔✔7.0
✔✔Good anaerobic sludge digestion volatile acid/alkalinity ratio is - ✔✔0.1:1
✔✔What happens in an anaerobic sludge digester when the VA/Alk ratio gets out of
balance? - ✔✔it upset the digester and SOUR occurs
✔✔FL DEP rule 62-600 states that all wastewater facility should have a __________
around it's perimeter. - ✔✔fence
✔✔Fl DEP 62-601 requires that reports are submitted by the ______ of the month for
the previous month. - ✔✔28th
✔✔FL DEP 62-604 requires VERBAL notification of an abnormal event within
__________ and a written report within ________. - ✔✔24 hours and 72 hours
✔✔FL DEP 62-620 requires that records be kept onsite for ________ years. - ✔✔3
years
✔✔The combination of methane and __________ are highly explosive. - ✔✔oxygen
