Practice Exams Grade II Treatment - Division of Water Quality

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285. Calculate the volume of sludge in the clarifier.DATA:Clarifier volume = 700,000 gallons.Aeration tank conc. = 3% solids.Return sludge conc. = 12% solids.Depth of sludge blanket = 8 ft.Average clarifier depth = 10 ft.Concentrations determined by centrifuge method, not by·gravimetric means.A. 0.14.B. 0.20.C.D.0.92.1.26.286.287.288.289.290.How many pounds of chlorine will be used in one day if the flowis 700,000 gpd and a uniform dose of 1.2 mg/L is applied?A. 71bs.B. 15 Ibs.C. 22 Ibs.D. 26 Ibs.The main action of a mixed media filter isA. Straining.B. Disinfecting.C. Coagulation.D. None of the above.Chlorine cylinders may be lifted usingA. Cables.B. Chains.C. Clamps.D. Ropes.A chlorine leak can be detected byA. An explosimeter.B. Checking the leak gauge.C. Green or reddish deposits on metal.D. Spraying water on suspected leaks.Failure of the chlorine solution pumps would resul t inA. A decrease in digester gas production.B. An increase in digester gas production.C. Lower effluent fecal coliform count.D. None of the above.
292. Not supplying enough air will causeA.B.Effluent quantity to improve.Excessive turbulence to occur on aeration compartmentsurface.C. Slick spots to show up on aeration compartment walkway.D. Turbidity of final effluent to increase.293. Given the data below, what is the most likely cause of theextended aeration facility problem?DATA: DO level high.Blower normal.Wastewater characteristics normal.Drop pipe air control valves open.Surface turbulence high.A. Air relief valve stuck shut.B. Blower speed too fast.C. Blower speed too slow.D. Drop pipe air control valves not open far enough.294. If the sludge depth in a secondary sedimentation tank is toohigh, what will happen?A.B.Decreased turbidity in effluent.Return activated sludge will have lower oxygen demand.C. Settleable solids from aeration tank will increase.D. Sludge may be~ome septic.295. What might cause a white filamentous growth in an RBC systemwhicb will result in poor BOD removal efficiency?A.B.High pH in the wastewater.Low BOD loading.C. Low pH in the wastewater.D. Septic wastewater.296. Pump station maintenance reports should includeA. Additional maintenance scheduling required.B. How repairs were made.C. Special equipment required.D. All of the above.291. Disaster planning isA. Having manuals ready so they can be read if a disasteroccurs.B. Something that, if properly done, will not need to berevised.C. Useful in reducing confusion in the event of a disaster.D. None of the above.298. Every day the operator of a small wastewater treatment plantshouldA. Clean settling basins and dispose of sludge.B. Determine that all plant equipment is operational.C. Replenish chemical stock.D. Test start standby pumps, motors and generators.
Page 1 and 2: Practice ExamsGrade II TreatmentThe
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Page 7 and 8: PAGE 633. The approximate pH for go
Page 9 and 10: 45. Calculate the return activated
Page 11 and 12: PA.(;E 1057. On the air driven RBC,
Page 13 and 14: PAGE 1266. Given the following data
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Page 17 and 18: PAGE 1693. Your flow meter is under
Page 19 and 20: Answers3 - C4-B5-B6-C8 - A9 - C10 -
Page 21 and 22: 209. If water weighs 8.34 pounds pe
Page 23 and 24: 225. Which of the following forms o
Page 25 and 26: 2~O.Chlorine is used toA. Disinfect
Page 27 and 28: WASTEWATER STUDY GUIDECLASS II251.
Page 29 and 30: 264. In electrical circuits a(n) is
Page 31: 279. Which one of the following con
Page 35 and 36: Item IJAnswerSubject201 B202 0203 C

Practice Exams Grade II Treatment - Division of Water Quality

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