Wastewater Exam Class C| questions an
kx kx kx kx kx
d answers verified A+ complete
kx kx kx kx
ThekxActivatedkxSludgekxProcess:
A.kxrequireskxpreaeration
B.kxrequireskxActivatedkxCarbon
C.kxiskxankxaerobickxbiologicalkxprocess.
D.kxUsuallykxprecedeskxprimarykxsedimentation.
E.kxRequireskx50%kxbykxvolumekxoldkxsludgekxtokxworkkxeffectively.kx-kxcorrectkxanswers-
C.kxIskxankxAerobickxbiologicalkxprocess
Akxcompletekxmixkxactivatedkxsludgekxplantkxhaskxakxfastkxsettlingkxsludgekxandkxhighkxamountskxofkxpinkxflockxleavi
ngkxthekxclarifier.kxOnekxwaykxtokxcorrectkxthiskxproblemkxiskxtokx:
A.kxIncreasekxthekxRASkxFlow
B.kxReducekxWastingkxRates
C.kxIncreasekxdissolvedkxoxygenkxlevels.
D.kxIncreasekxthekxF/Mkxratiokxbykxwastingkxmore
E.kxIncreasekxthekxsludgekxagekxbykxwastingkxless.kx-kxcorrectkxanswers-
D.kxIncreasekxthekxF/MkxRatiokxbykxWastingkxMore
Whichkxofkxthekxfollowingkxflowkxrateskxshouldkxbekxmeasuredkxifkxthekxoperatorkxiskxtokxcontrolkxplantkxproperly?
A.kxAerationkxratekxorkxresultingkxdissolvedkxoxygenkxlevel.
B.kxInfluentkxorkxeffluent.
C.kxreturnkxsludge
D.kxwastekxsludge
E.kxallkxthekxabovekx-kxcorrectkxanswers-E.kxallkxthekxabove
Duringkxstartkxupkxyourkxaerationkxtankkxproduceskxexcessivekxamountskxofkxbillowingkxwhitekxfoam.kxThiskxcankxb
ekxcorrectedkxby:
A.kxDoingkxnothing,kxitkxwillkxgokxawaykxinkxakxfewkxhours
B.kxIncreasingkxthekxsludgekxwastingkxrate
C.kxSeedingkxthekxprocesskxwithkxsufficientkxgoodkxqualitykxsludge
D.kxSprayingkxwaterkxonkxthekxfoamkxuntilkxitkxiskxgone
E.kxTakingkxakxweekskxvacationkx-kxcorrectkxanswers-
C.kxSeedingkxthekxprocesskxwithkxsufficientkxgoodkxqualitykxsludge
Inkxsolvingkxankxoperationalkxproblemkxatkxakxtreatmentkxplant:
A.kxtherekxiskxalmostkxalwayskxakxgoodkxtechnicalkxsolution.kxItkxmaykxrequirekxconsiderablekxexperiencekxandkxti
mekxtokxlearnkxwhaatkxitkxis.
B.kxHumankxerrorskxhavekxtokxbekxcorrectedkxsincekxthekxoperatorkxiskxatkxfault.kx
C.kxdon'tkxletkxthekxlaboratorykxpersonnelkxinfluencekxyou'rekxjudgementkxaskxtokxwhatkxthekxbestkxsolutionkxis.
D.kxstandardkxtextbookskxinkxsanitarykxengineeringkxarekxthekxbestkxsourcekxofkxinformation.kx
, E.kxItkxiskxbestkxtokxdokxnothingkxuntilkxthekxTNRCCCkxsendskxakxviolationkxnotice.kx-kxcorrectkxanswers-
A.kxtherekxiskxalmostkxalwayskxakxgoodkxtechnicalkxsolution.kxItkxmaykxrequirekxconsiderablekxexperiencekxandkxti
mekxtokxlearnkxwhaatkxitkxis.
Whenkxthekxreturnkxsludgekxratekxiskxtookxlow,kxwhatkxhappens?
A.kxthekxaerationkxtankkxwillkxnotkxfill
B.kxTherekxwillkxbekxinsufficientkxorganismskxtokxtreatkxthekxwastkxloadkxenteringkxthekxaerationkxbasin
C.kxthekxactivatedkxsludgekxinkxthekxaeratorkxwillkxstarve.
D.kxthekxsludgekxblanketkxinkxthekxsecondarykxclarifierkxcouldkxbecomekxtookxhigh.
E.kxBkxandkxDkx-kxcorrectkxanswers-E.kxBkxandkxD
Whatkxfactorskxaffectkxhowkxwellkxthekxmixedkxliquorkxsuspendedkxsolidskxsettlekxinkxthekxfinalkxclarifier?
A.kxflowkxvelocitykxandkxorkxturbulence
B.kxtemperature
C.kxqualitykxofkxthekxmixedkxliquorkxsolids
D.kxShortkxcircuitingkx
E.kxAllkxofkxthekxabovekx-kxcorrectkxanswers-E.kxAllkxofkxthekxabove
ThekxActivekxsludgekxprocesskxparameterskxwhichkxnkxoperatorkxcankxchangekxdirectlykxare:
A.kxaerationkxrates.
B.kxwastekxrates.
C.kxthekxratiokxofkxfreekxswimmingkxtokxstalkedkxciliates.
D.kxReturnkxsludgekxrates.
E.kxAllkxthekxabovekxexceptkxC.kx-kxcorrectkxanswers-E.kxAllkxthekxabovekxexceptkxC.
Whichkxofkxthekxfollowingkxwouldkxyoukxusekxtokxincreasekxthekxdegreekxofkxnitrificationkxinkxankxactivatedkxsludge
kxplant?
A.kxincreasekxthekxwastkxrates
B.kxincreasekxdissolvedkxoxygenkxlevelskxandkxincreasekxthekxsludgekxage
C.kxRemovekxexcesskxalkalinitykxfromkxthekxwastewater
D.kxMaintainkxakxthickerkxsludgekxblanketkxnkxthekxclarifier
E.kxInhibitkxthekxgrowthkxofkxthekxnitrifyingkxbacteriakxwithkxchemicals.kx-kxcorrectkxanswers-
B.kxincreasekxdissolvedkxoxygenkxlevelskxandkxincreasekxthekxsludgekxage
ThekxMaximumkxchangekxinkxthekxsludgekxwastingkxrateskxtokxmaintainkxuniformkxoperatingkxconditionskxshouldk
xbekxaboutkx
A.kx10-kx20kx%kxperkxday
B.kx20-40kx%kxperkxday
C.kx40-60kx%kxperkxday
D.kx60-80kx%kxperkxday
E.kx100%kxperkxdaykx-kxcorrectkxanswers-A.kx10-kx20kx%kxperkxday
Whenkxoperatingkxankxactivatedkxsludgekxplant,kxWhichkxTSSkxconcentrationkxiskxmostkximportantkxforkxprocesskx
control?
A.kxPrimarykxeffluentkx
B.kxAerationkxtankkxmixedkxliquor.
C.kxReturnkxSludge
D.kxDigester.
kx kx kx kx kx
d answers verified A+ complete
kx kx kx kx
ThekxActivatedkxSludgekxProcess:
A.kxrequireskxpreaeration
B.kxrequireskxActivatedkxCarbon
C.kxiskxankxaerobickxbiologicalkxprocess.
D.kxUsuallykxprecedeskxprimarykxsedimentation.
E.kxRequireskx50%kxbykxvolumekxoldkxsludgekxtokxworkkxeffectively.kx-kxcorrectkxanswers-
C.kxIskxankxAerobickxbiologicalkxprocess
Akxcompletekxmixkxactivatedkxsludgekxplantkxhaskxakxfastkxsettlingkxsludgekxandkxhighkxamountskxofkxpinkxflockxleavi
ngkxthekxclarifier.kxOnekxwaykxtokxcorrectkxthiskxproblemkxiskxtokx:
A.kxIncreasekxthekxRASkxFlow
B.kxReducekxWastingkxRates
C.kxIncreasekxdissolvedkxoxygenkxlevels.
D.kxIncreasekxthekxF/Mkxratiokxbykxwastingkxmore
E.kxIncreasekxthekxsludgekxagekxbykxwastingkxless.kx-kxcorrectkxanswers-
D.kxIncreasekxthekxF/MkxRatiokxbykxWastingkxMore
Whichkxofkxthekxfollowingkxflowkxrateskxshouldkxbekxmeasuredkxifkxthekxoperatorkxiskxtokxcontrolkxplantkxproperly?
A.kxAerationkxratekxorkxresultingkxdissolvedkxoxygenkxlevel.
B.kxInfluentkxorkxeffluent.
C.kxreturnkxsludge
D.kxwastekxsludge
E.kxallkxthekxabovekx-kxcorrectkxanswers-E.kxallkxthekxabove
Duringkxstartkxupkxyourkxaerationkxtankkxproduceskxexcessivekxamountskxofkxbillowingkxwhitekxfoam.kxThiskxcankxb
ekxcorrectedkxby:
A.kxDoingkxnothing,kxitkxwillkxgokxawaykxinkxakxfewkxhours
B.kxIncreasingkxthekxsludgekxwastingkxrate
C.kxSeedingkxthekxprocesskxwithkxsufficientkxgoodkxqualitykxsludge
D.kxSprayingkxwaterkxonkxthekxfoamkxuntilkxitkxiskxgone
E.kxTakingkxakxweekskxvacationkx-kxcorrectkxanswers-
C.kxSeedingkxthekxprocesskxwithkxsufficientkxgoodkxqualitykxsludge
Inkxsolvingkxankxoperationalkxproblemkxatkxakxtreatmentkxplant:
A.kxtherekxiskxalmostkxalwayskxakxgoodkxtechnicalkxsolution.kxItkxmaykxrequirekxconsiderablekxexperiencekxandkxti
mekxtokxlearnkxwhaatkxitkxis.
B.kxHumankxerrorskxhavekxtokxbekxcorrectedkxsincekxthekxoperatorkxiskxatkxfault.kx
C.kxdon'tkxletkxthekxlaboratorykxpersonnelkxinfluencekxyou'rekxjudgementkxaskxtokxwhatkxthekxbestkxsolutionkxis.
D.kxstandardkxtextbookskxinkxsanitarykxengineeringkxarekxthekxbestkxsourcekxofkxinformation.kx
, E.kxItkxiskxbestkxtokxdokxnothingkxuntilkxthekxTNRCCCkxsendskxakxviolationkxnotice.kx-kxcorrectkxanswers-
A.kxtherekxiskxalmostkxalwayskxakxgoodkxtechnicalkxsolution.kxItkxmaykxrequirekxconsiderablekxexperiencekxandkxti
mekxtokxlearnkxwhaatkxitkxis.
Whenkxthekxreturnkxsludgekxratekxiskxtookxlow,kxwhatkxhappens?
A.kxthekxaerationkxtankkxwillkxnotkxfill
B.kxTherekxwillkxbekxinsufficientkxorganismskxtokxtreatkxthekxwastkxloadkxenteringkxthekxaerationkxbasin
C.kxthekxactivatedkxsludgekxinkxthekxaeratorkxwillkxstarve.
D.kxthekxsludgekxblanketkxinkxthekxsecondarykxclarifierkxcouldkxbecomekxtookxhigh.
E.kxBkxandkxDkx-kxcorrectkxanswers-E.kxBkxandkxD
Whatkxfactorskxaffectkxhowkxwellkxthekxmixedkxliquorkxsuspendedkxsolidskxsettlekxinkxthekxfinalkxclarifier?
A.kxflowkxvelocitykxandkxorkxturbulence
B.kxtemperature
C.kxqualitykxofkxthekxmixedkxliquorkxsolids
D.kxShortkxcircuitingkx
E.kxAllkxofkxthekxabovekx-kxcorrectkxanswers-E.kxAllkxofkxthekxabove
ThekxActivekxsludgekxprocesskxparameterskxwhichkxnkxoperatorkxcankxchangekxdirectlykxare:
A.kxaerationkxrates.
B.kxwastekxrates.
C.kxthekxratiokxofkxfreekxswimmingkxtokxstalkedkxciliates.
D.kxReturnkxsludgekxrates.
E.kxAllkxthekxabovekxexceptkxC.kx-kxcorrectkxanswers-E.kxAllkxthekxabovekxexceptkxC.
Whichkxofkxthekxfollowingkxwouldkxyoukxusekxtokxincreasekxthekxdegreekxofkxnitrificationkxinkxankxactivatedkxsludge
kxplant?
A.kxincreasekxthekxwastkxrates
B.kxincreasekxdissolvedkxoxygenkxlevelskxandkxincreasekxthekxsludgekxage
C.kxRemovekxexcesskxalkalinitykxfromkxthekxwastewater
D.kxMaintainkxakxthickerkxsludgekxblanketkxnkxthekxclarifier
E.kxInhibitkxthekxgrowthkxofkxthekxnitrifyingkxbacteriakxwithkxchemicals.kx-kxcorrectkxanswers-
B.kxincreasekxdissolvedkxoxygenkxlevelskxandkxincreasekxthekxsludgekxage
ThekxMaximumkxchangekxinkxthekxsludgekxwastingkxrateskxtokxmaintainkxuniformkxoperatingkxconditionskxshouldk
xbekxaboutkx
A.kx10-kx20kx%kxperkxday
B.kx20-40kx%kxperkxday
C.kx40-60kx%kxperkxday
D.kx60-80kx%kxperkxday
E.kx100%kxperkxdaykx-kxcorrectkxanswers-A.kx10-kx20kx%kxperkxday
Whenkxoperatingkxankxactivatedkxsludgekxplant,kxWhichkxTSSkxconcentrationkxiskxmostkximportantkxforkxprocesskx
control?
A.kxPrimarykxeffluentkx
B.kxAerationkxtankkxmixedkxliquor.
C.kxReturnkxSludge
D.kxDigester.
