Texas Wastewater Class A Exam Questions With 100% Correct And Verified Answers

Texas Wastewater Class A Exam
Questions With 100% Correct And
Verified Answers
SeedingiofiBODisamplesiisinecessaryiwhenisamplesi-
iCorrectiAnswer-

(Alliofitheiabove)ihaveiaichlorineiresidual,ihaveiaiprev
iouslyibeenichlorinated,ihaveibeenisubjecteditoihighit
emperatures,icontainihighiorilowipHiindustrialiwaste
s

Wheniisiblue-
greenialgaeitheimostidominantioniaiponditreatmentis
ystem?i-iCorrectiAnswer-Summer

Ai30-
inchidiameteriwastewateriinterceptoriisiobserveditoib
eiflowingihalf-
fulliatiaboutitwoifps.iTheiapproximateivolumeiofiwast
ewateriflowingithroughitheipipeiisi3.14x1.25ixi1.25ixi
2i=i4.9icfsixi449i=i2,200igpmi-iCorrectiAnswer-
c.i2,200igallonsiperiminute

Aione-cylinderireciprocatingisludgeipumpiwithiai10-
inchiboreiandiai5-
inchistrokeipumpsiatiairateiofi50icyclesiperiminute.iH
owimanyiminutesimustitheipumpibeioperateditoipum
pi5,000igallonsiofisludge?
i3.14x0.416ixi0.416ix0.416ixi50ix7.48i=i84.5igpmi5000

igali=i59,2mini84.5igpmib.i29i-iCorrectiAnswer-

60iminutes



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,Ifianiexistingicentrifugalipumpimotoriisireplacediwith
iaimotoriwithi25ipercentimoreispeed,itheimotorihorse

powerirequirediwilliincreaseibyi1.25ixi1.25ixi1.25i=i1.
95i-iCorrectiAnswer-95ipercent

WhenimustiTCEQibeinotifiediaboutiexpansionsiofiaitr
eatmentifacility?i-iCorrectiAnswer-
Beforeiconstruction

Inianianaerobicidigester,itheipercentageiofimethanei
andicarbonidioxideigasicontentishouldibei-
iCorrectiAnswer-70%imethane,i30%icarbonidioxide



Theitemperatureiofianianaerobicidigesterishouldibei
maintainediatiaiminimumiofi-iCorrectiAnswer-95°iF

Whatitypeiofiwastewateritreatmentioperatesiinitheien
dogenousibacteriaigrowthiphase?i-iCorrectiAnswer-
Extendediair

Whyiisirecirculationineedediiniaitricklingifilter?i-
iCorrectiAnswer-

KeepitheimediaiwetiFurtherireduceiBODiAlliofitheiabo
vei(a,ib,iandic)

Whatitypeiofifireiextinguisheriwouldibeiusedionianiele
ctricalicontrolipanelithatihasibeenide-energized?i-
iCorrectiAnswer-ClassiAiClassiCi(aiandid)



Disinfectioniwithichlorineiisitheimostieffectiveiatiaip
Hiofi-iCorrectiAnswer-6.0




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, TheibiomassioniainormalifunctioningiRBCihasiwhatia
ppearance?i-iCorrectiAnswer-
Greyitoibrowniandi0.05itoi0.1iinchithick

Theisludgeifromiaiprimaryiclarifierishouldipercentisol
ids?i-iCorrectiAnswer-4%itoi6%

Whatiisieutrophicationiiniaipondisystem?i-
iCorrectiAnswer-

EnrichmentiwithinitrogeniandiphosphorousiCausesia
lgaeibloomsi(biandic)

HowioftenishouldipHimetersibeicalibrated?i-
iCorrectiAnswer-Daily



IniTexas,ipHimetersiareirequireditoibeicalibratedionih
owimanyibuffers?i-iCorrectiAnswer-two

AniindustrialicomplexihasiaiBODidischargeitoitheiPO
TWiofi500ipoundsiperiday.iTheipopulationiequivalenti
ofithisiindustryiisi500ilbsi=i2,941i0.17ilbsiBODiperson
i-iCorrectiAnswer-2941



TheiparametersiofitheiBODitestiarei-iCorrectiAnswer-
5idaysiati20°iCentigrade

StandardiDimensioniRatioiinipvcipipeiisidefinediasi-
iCorrectiAnswer-

RatioiofiODipipeidiameteritoiwallithickness

Howishouldishoringibeiremovedifromiaitrench?i-
iCorrectiAnswer-upifromitheibottomiup




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