WASTEWATER CERTIFICATION TEST 2023 QUESTIONS AND ANSWERS ALREADY PASSED A+

Surface water runoff, storm water, sanitary and industrial. - CORRECT ANS A collection system that is called "combined" may carry this kind of wastewater: 2 - CORRECT ANS The flow in a collection system should be a minimum of ____ feet per second (FPS)? Solids will settle. - CORRECT ANS What will happen if the flow is too slow in a collection system? Odors, Corrosion, Hydrogen Sulfide Gas (all of the above) - CORRECT ANS A short detention time in the collection system will help prevent which of the following problems? Low areas must be sewered. - CORRECT ANS When are lift (pumping) stations installed in a collection system? Parentheses, Exponents, Multiplication, Division, Addition, Subtraction - CORRECT ANS The order of operations to solve math problems is: (from first to last) 27 - CORRECT ANS 3^3 24 - CORRECT ANS (5+7)x4/2= 19 - CORRECT ANS 7+6X4/2= 4 - CORRECT ANS 2X+12=20. What is "X" equal to? 3,000,000gal/1,500,000MGD = 2 days = 48 hours - CORRECT ANS The volume of a tank is 3,000,000 gallons (3MG) and the flow rate into the tank is 1,500,000 gallons per day (1.5 MGD). Calculate the detention time in hours. (750 GPM)(60 min/hr)(24 hr/day)/1,000,000 = 1.08 MGD - CORRECT ANS A pump is rated at 750 gpm. Calculate the flow rate in million gallons per day (MGD).