TCEQ WASTEWATER (CLASS D)
LICENSE PREP EXAM Q&A
The ladder most extend ____ feet above the trench and be secured. - Answer-3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet
apart. - Answer-25ft, 50ft
The excavation spoil must be at least? - Answer-2ft from the edge of the trench
Which type of pump is most often used in a lift station? - Answer-Centrifugal Pump
What is CMOM? - Answer-Capacity, management, operations, and maintenance
Install water lines no closer to a water line than ____ feet - Answer-9ft
Chlorine helps ______ grease, making it easy to skim - Answer-Congeal
The magnetic meter works by the law of ________ - Answer-Induction
Primary clarifiers should remove _____ percent of the incoming BOD - Answer-35%
Primary sludge is about ________% water and _______% solids - Answer-94-96%
water, and 4-6% solids
Primary clarifiers should remove ____ % of the BOD and _____% of the settleable
solids - Answer-35%, 90-95%
Usual blanket depth in a secondary clarifier is no more than ____ of the sidewall
depth - Answer-1/4
When sludge is within _____ inches of the slot, withdraw sludge - Answer-18 inches
Microorganisms including bacteria, protozoa, fungi, and microscopic animals, feed
on the organic waste and can remove_________% of the BOD from wastewater -
Answer-92-99%
A return sludge pumping system must be capable of pumping at least ______ gpd/sf
but not more than______ gpd/sf - Answer-200gpd/sf, 400gpd/sf
What are the two ways to maintain the microorganism balance? - Answer-Food to
Microorganism ratio (F/M) & Mean Cell Residence Time (MCRT)
Minimum velocity required to keep solids in suspension? - Answer-2ft/sec
Minimum required velocity a inverted siphon requires? - Answer-3ft/sec
LICENSE PREP EXAM Q&A
The ladder most extend ____ feet above the trench and be secured. - Answer-3ft
Ladders must be within ____ feet of trench workers and not more than ____ feet
apart. - Answer-25ft, 50ft
The excavation spoil must be at least? - Answer-2ft from the edge of the trench
Which type of pump is most often used in a lift station? - Answer-Centrifugal Pump
What is CMOM? - Answer-Capacity, management, operations, and maintenance
Install water lines no closer to a water line than ____ feet - Answer-9ft
Chlorine helps ______ grease, making it easy to skim - Answer-Congeal
The magnetic meter works by the law of ________ - Answer-Induction
Primary clarifiers should remove _____ percent of the incoming BOD - Answer-35%
Primary sludge is about ________% water and _______% solids - Answer-94-96%
water, and 4-6% solids
Primary clarifiers should remove ____ % of the BOD and _____% of the settleable
solids - Answer-35%, 90-95%
Usual blanket depth in a secondary clarifier is no more than ____ of the sidewall
depth - Answer-1/4
When sludge is within _____ inches of the slot, withdraw sludge - Answer-18 inches
Microorganisms including bacteria, protozoa, fungi, and microscopic animals, feed
on the organic waste and can remove_________% of the BOD from wastewater -
Answer-92-99%
A return sludge pumping system must be capable of pumping at least ______ gpd/sf
but not more than______ gpd/sf - Answer-200gpd/sf, 400gpd/sf
What are the two ways to maintain the microorganism balance? - Answer-Food to
Microorganism ratio (F/M) & Mean Cell Residence Time (MCRT)
Minimum velocity required to keep solids in suspension? - Answer-2ft/sec
Minimum required velocity a inverted siphon requires? - Answer-3ft/sec
