ABC Wastewater {Treatment} Verified Multiple Choice and Conceptual Actual
Frequently Tested Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
BOD incubation period and temperature 5 days at 20 C
Time to hold BOD sample in fridge 48 hours 4 C
What preservative do you add to store COD samples? Sulfuric Acid H2SO4
Ammonia incubation period and temperature 28 days at 4 C
What preservative do you add to store Ammonia Sulfuric Acid H2SO4
Fecal Coliform holding time is 8 hours
A drip trap for an anaerobic digester does what Removes condensate in the gas piping system
Chemical used to raise pH in a digester Sodium bicarbonate or Lime
What causes the pH in an anaerobic digester to decrease Increase in volatile/alkalinity ratio
Heterotrophs feed on Organic carbon
Autotrophs feed on Inorganic carbon. They produce their own nutrients.
Ensure accurate lab results through duplicity
Which is larger, BOD or COD? COD is larger
Phosphorous removal ratio of 300:5:1 COD : Nitrogen : Phosphorous
Phosphorous removal ratio of 100:5:1 BOD : Nitrogen : Phosphorous
Pump eflciency with 86% pump power and 86% motor
73.96%
functionality
First stage of an upset digester? Volatile acids increase, alkalinity decrease
Digester temperature can be raised by how much per day? 1F
Average temperature of an anaerobic digester? 95 F
Belt Press Thickener solids are thin so you decrease the belt retention time
Centrifugal pump temperature is hot so operator cuts flow
Cool down
to 50%, temperature will
Advantage of egg shaped digester over cylindrical less scum accumulation
1/3
Frequently Tested Exam Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
BOD incubation period and temperature 5 days at 20 C
Time to hold BOD sample in fridge 48 hours 4 C
What preservative do you add to store COD samples? Sulfuric Acid H2SO4
Ammonia incubation period and temperature 28 days at 4 C
What preservative do you add to store Ammonia Sulfuric Acid H2SO4
Fecal Coliform holding time is 8 hours
A drip trap for an anaerobic digester does what Removes condensate in the gas piping system
Chemical used to raise pH in a digester Sodium bicarbonate or Lime
What causes the pH in an anaerobic digester to decrease Increase in volatile/alkalinity ratio
Heterotrophs feed on Organic carbon
Autotrophs feed on Inorganic carbon. They produce their own nutrients.
Ensure accurate lab results through duplicity
Which is larger, BOD or COD? COD is larger
Phosphorous removal ratio of 300:5:1 COD : Nitrogen : Phosphorous
Phosphorous removal ratio of 100:5:1 BOD : Nitrogen : Phosphorous
Pump eflciency with 86% pump power and 86% motor
73.96%
functionality
First stage of an upset digester? Volatile acids increase, alkalinity decrease
Digester temperature can be raised by how much per day? 1F
Average temperature of an anaerobic digester? 95 F
Belt Press Thickener solids are thin so you decrease the belt retention time
Centrifugal pump temperature is hot so operator cuts flow
Cool down
to 50%, temperature will
Advantage of egg shaped digester over cylindrical less scum accumulation
1/3
