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WASTEWATER III STUDY EXAM QUESTIONS AND CORRECT ANSWERS

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Institution WASTE WATER CLASS B
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WASTEWATER III STUDY EXAM QUESTIONS AND CORRECT ANSWERS

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WASTEWATER III STUDY EXAM
QUESTIONS AND CORRECT ANSWERS

FirstA2actionA2forA2aA2polymerA2spillA2-A2Ans--
ApplyA2anA2absorbentA2toA2theA2spillA2suchA2asA2sandA2orA2kittyA2litterA2andA2thenA2sweepA
2upA2theA2materials.


TotalA2dischargeA2headA2includesA2-A2Ans--
DischargeA2pressureA2headA2+A2staticA2dischargeA2headA2+A2VelocityA2headA2(outlet)A2+A2
FrictionA2HeadA2(dischargeA2line)

WhereA2isA2theA2bestA2locationA2toA2collectA2aA2sample?A2-A2Ans--
AA2locationA2thatA2representsA2theA2entireA2wasteA2streamA2orA2basin.

WhatA2areA2theA2preservationA2andA2holdA2timesA2forA2BODA2samples?A2-A2Ans--
48A2hoursA2atA2<A2orA2=A2toA26A2degreesA2C.

DefineA2BOD.A2-A2Ans--
TheA2rateA2atA2whichA2organismsA2useA2theA2oxygenA2inA2waterA2orA2wasteA2waterA2whileA
2stabilizingA2decomposeableA2organicA2matterA2underA2aerobicA2conditions.


WhatA2isA2theA2purposeA2ofA2aA2dessicator?A2-A2Ans--
ToA2allowA2residualA2samplesA2toA2controlA2moistureA2priorA2toA2weighing.

WhatA2willA2happenA2ifA2theA2flowA2toA2theA2gritA2chamberA2isA2tooA2low?A2-A2Ans--
TooA2muchA2organicA2materialA2willA2beA2deposited.

HowA2doesA2anA2operatorA2controlA2theA2suspendedA2solidsA2inA2anA2activatedA2sludgeA2b
asin?A2-A2Ans--ByA2wastingA2andA2returningA2activatedA2sludge.

ChlorineA2combinesA2withA2ammoniaA2toA2formA2whatA2-A2Ans--Chloramines

WhatA2canA2theA2operatorA2controlA2withA2theA2activatedA2sludgeA2process?A2-A2Ans--
WastingA2andA2returnA2rates.

WhatA2isA2theA2bestA2wayA2toA2controlA2filamentousA2bacteria?A2-A2Ans--
AdditionA2ofA2chlorineA2toA2theA2(RAS.)A2CalledA2returnA2onA2someA2tests.

AA25.2A2acreA2lagoonA2withA2anA2in-
fluentA2ofA247000A2gallonsA2perA2dayA2isA2droppedA23A2inchesA2aA2dayA2fromA2aA2depthA2of
A25A2feetA2toA2aA2depthA2ofA22A2feet.A2HowA2manyA2gallonsA2areA2dischargedA2eachA2day?
A2-A2Ans--470,577A2gallonsA2perA2dayA2(exactA2problem)

, DefineA2endogenousA2respiration.A2-A2Ans--
AA2situationA2whereA2livingA2organismsA2oxidizeA2someA2ofA2theirA2ownA2cellularA2massA2i
nsteadA2ofA2newA2organicA2matterA2theyA2absorbA2orA2absorbA2fromA2theirA2environment.

WhatA2shouldA2theA2velocityA2ofA2theA2sewageA2inA2aA2gravityA2sewerA2lineA2beA2comingA2i
ntoA2theA2wasteA2waterA2plant?A2-A2Ans--AtA2leastA22.0A2FeetA2perA2second.

WhatA2doesA2hydrogenA2sulfideA2doA2inA2aA2collectionA2system?A2-A2Ans--
ItA2causesA2corrosion.

WhatA2mustA2beA2onA2theA2warningA2tagA2attachedA2toA2aA2switchA2thatA2hasA2beenA2locke
dA2out?A2-A2Ans--
TheA2signatureA2ofA2theA2personA2whoA2lockedA2outA2theA2switchA2andA2whoA2isA2theA2only
A2personA2authorizedA2toA2removeA2theA2tag.


PrimaryA2clarificationA2generallyA2removesA2whatA2percentageA2ofA2TSS?
A2(TotalA2SuspendedA2Solids)A2-A2Ans--40A2toA260%


HowA2isA2theA2flowA2ofA2theA2chlorineA2controlledA2fromA2theA2chlorinator?A2-A2Ans--
WithA2aA2rotometer.

ChlorineA2isA2corrosiveA2whenA2itA2mixesA2with?A2-A2Ans--Moisture

WhatA2isA2theA2acceptableA2leakA2rateA2ofA2aA2mechanicalA2seal?A2-A2Ans--
MechanicalA2sealsA2shouldA2notA2leak.

WhatA2pieceA2ofA2equipmentA2isA2requiredA2toA2enterA2aA2confinedA2space?A2-A2Ans--
OxygenA2meter.

WhatA2shouldA2beA2wornA2toA2enterA2aA2spaceA2withA2aA2largeA2chlorineA2leak?A2-A2Ans--
SCBA

WhyA2isA2wasteA2waterA2disinfected?A2-A2Ans--
ToA2destroyA2orA2disableA2pathogenicA2organisms.

TheA2rakesA2inA2aA2primaryA2clarifierA2jerk,A2skipsA2orA2hangs,A2whatA2shouldA2beA2done?
A2-A2Ans--DrainA2clarifierA2andA2determineA2theA2sourceA2ofA2theA2problem.


WhatA2isA2theA2predominantA2organismA2responsibleA2forA2stabilizingA2theA2wasteA2inA2the
A2tricklingA2filter?A2-A2Ans--Bacteria


WhereA2shouldA2theA2airA2reliefA2valveA2beA2locatedA2inA2aA2forcedA2mainA2inA2theA2collecti
onsA2system?A2-A2Ans--AtA2theA2highestA2elevationA2inA2theA2line.

WhatA2hazardousA2gasesA2wouldA2anA2operatorA2beA2potentiallyA2exposedA2to?A2-A2Ans--
Hydrogensulfide,A2methane.

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