TCEQ Wastewater Class D License Exam
Prep Solved 100% Correct
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
Chlorine helps ______ grease, making it easy to skim - ANSWER-Congeal
How often do you calibrate flow measuring devices? - ANSWER-Annually
If the trench is _____ or deeper, use a portable ladder or other means of exit. -
ANSWER-4ft or deeper
Install water lines no closer to a water line than ____ feet - ANSWER-9ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
ANSWER-25ft, 50ft
Microorganisms including bacteria, protozoa, fungi, and microscopic animals, feed on
the organic waste and can remove_________% of the BOD from wastewater -
ANSWER-92-99%
Minimum required velocity a inverted siphon requires? - ANSWER-3ft/sec
Minimum velocity required to keep solids in suspension? - ANSWER-2ft/sec
OSHA minimum standards for shoring, sloping, or trench boxes are? - ANSWER-5ft or
deeper
Primary clarifiers should remove ____ % of the BOD and _____% of the settleable
solids - ANSWER-35%, 90-95%
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
The excavation spoil must be at least? - ANSWER-2ft from the edge of the trench
The ladder most extend ____ feet above the trench and be secured. - ANSWER-3ft
The magnetic meter works by the law of ________ - ANSWER-Induction
Prep Solved 100% Correct
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
Chlorine helps ______ grease, making it easy to skim - ANSWER-Congeal
How often do you calibrate flow measuring devices? - ANSWER-Annually
If the trench is _____ or deeper, use a portable ladder or other means of exit. -
ANSWER-4ft or deeper
Install water lines no closer to a water line than ____ feet - ANSWER-9ft
Ladders must be within ____ feet of trench workers and not more than ____ feet apart. -
ANSWER-25ft, 50ft
Microorganisms including bacteria, protozoa, fungi, and microscopic animals, feed on
the organic waste and can remove_________% of the BOD from wastewater -
ANSWER-92-99%
Minimum required velocity a inverted siphon requires? - ANSWER-3ft/sec
Minimum velocity required to keep solids in suspension? - ANSWER-2ft/sec
OSHA minimum standards for shoring, sloping, or trench boxes are? - ANSWER-5ft or
deeper
Primary clarifiers should remove ____ % of the BOD and _____% of the settleable
solids - ANSWER-35%, 90-95%
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
The excavation spoil must be at least? - ANSWER-2ft from the edge of the trench
The ladder most extend ____ feet above the trench and be secured. - ANSWER-3ft
The magnetic meter works by the law of ________ - ANSWER-Induction
