TX CLASS C WASTEWATER TREATMENT LICENSE QUESTIONS AND CORRECT ANSWERS

TX CLASS C WASTEWATER
TREATMENT LICENSE QUESTIONS
AND CORRECT ANSWERS
PreliminaryA2TreatmentA2-A2Ans--
theA21stA2stageA2ofA2sewageA2treatmentA2whereA2largeA2debris,A2suchA2asA2sticks,A2grit,A2
andA2ragsA2pasA2throughA2aA2screenA2followedA2byA2aA2gritA2chamber,A2whereA2theA2flowA2
ofA2waterA2isA2slowedA2enoughA2toA2allowA2forA2sedimentation.

WhatA2stageA2ofA2treatmentA2isA2gritA2removalA2usuallyA2accomplishedA2in?A2-A2Ans--
preliminaryA2treatment

RotatingA2BiologicalA2ContactorA2-A2Ans--
aA2typeA2ofA2biologicalA2secondaryA2treatmentA2process

HowA2areA2protozoaA2(causeA2ofA2amoebicA2dysentery)A2destroyed?A2-A2Ans--disinfection

OtherA2thanA2streamA2discharge,A2whatA2areA2otherA2waysA2toA2disposeA2ofA2effluentA2was
tewater?A2-A2Ans--
aquiferA2recharge,A2evaporationA2inA2aA2pond,A2andA2applicationA2toA2farmA2landA2byA2irrig
ation

CleanA2WaterA2ActA2-A2Ans--
givesA2theA2basicA2structureA2forA2regulatingA2dischargesA2ofA2pollutantsA2intoA2theA2water
sA2ofA2theA2UnitedA2States

TexasA2WaterA2CodeA2-A2Ans--
givesA2theA2TCEQA2jurisdictionA2overA2dischargesA2ofA2wasteA2intoA2orA2adjacentA2toA2wat
erA2inA2theA2state

WhoA2reviewsA2plansA2andA2specificationsA2forA2newA2constructionA2projectsA2beforeA2con
structionA2begins?A2-A2Ans--TCEQ

WaterA2qualityA2feesA2mayA2beA2asA2highA2asA2____________A2perA2permit?A2-A2Ans--
$115,000

AdministrativeA2penalties,A2upA2toA2__________A2perA2dayA2forA2eachA2violation,A2mayA2b
eA2assessedA2againstA2anyA2violator.A2-A2Ans--$25,000

EveryA2cityA2withA2moreA2thanA2________A2inA2populationA2needsA2toA2establishA2aA2water
A2pollutionA2controlA2programA2andA2hireA2qualifiedA2personnelA2toA2administerA2it.A2-
A2Ans--10,000

,StateA2lawA2requiresA2thatA2reportsA2areA2toA2beA2submittedA2noA2laterA2thanA2theA2______
__thA2dayA2ofA2theA2followingA2month.A2-A2Ans--20

WhatA2areA2majorA2surfaceA2watersA2classifiedA2asA2forA2theA2purposesA2ofA2waterA2qualit
yA2managementA2andA2designationA2ofA2site-specificA2standards?A2-A2Ans--segments

InflowA2-A2Ans--
directA2dischargesA2ofA2stormA2waterA2orA2surfaceA2waterA2intoA2aA2wastewaterA2collection
A2systemA2(stormA2drains,A2roofA2gutters,A2yardA2drains,A2basementA2sumpA2pumpsA2andA
2brokenA2manholesA2andA2wastewaterA2lines).


HowA2manyA2gallonsA2perA2dayA2willA2eachA2personA2contributeA2toA2theA2wastewaterA2tre
atmentA2plant?A2-A2Ans--100

HowA2muchA2BODA2willA2eachA2personA2contributeA2toA2theA2wastewaterA2treatmentA2plan
tA2eachA2day?A2-A2Ans--0.17

CauseA2ofA2septicA2wastewaterA2-A2Ans--bacterialA2action

ClassificationsA2ofA2solidsA2inA2wastewaterA2-A2Ans--fixed/ash,A2suspended/
dissolved,A2organic/inorganic

OrganicA2compoundsA2inA2wastewaterA2includeA2-A2Ans--
carbon,A2hydrogenA2andA2oxygenA2(animalA2andA2vegetableA2inA2nature)

TypeA2ofA2organicA2matterA2presentA2inA2wastewaterA2-A2Ans--proteins

BODA2isA2aA2measureA2ofA2what?A2-A2Ans--oxygenA2usedA2up

WaysA2thatA2oxygenA2canA2beA2depletedA2inA2streamsA2-A2Ans--
untreatedA2wasteA2discharges,A2algaeA2massesA2atA2night,A2andA2highA2BODA2inA2theA2effl
uent

AA2gasA2foundA2inA2treatmentA2systemsA2thatA2isA2NOTA2dangerousA2-A2Ans--
dissolvedA2oxygen

CyclesA2ofA2decayA2includeA2-A2Ans--carbon,A2nitrogenA2andA2sulfur

AA2flowA2totalizerA2isA2requiredA2whenA2theA2plantA2designA2flowA2isA2moreA2thanA2-A2Ans--
0.5A2MGD

Non-hazardousA2wastesA2includeA2-A2Ans--
chlorides,A2alkalinity,A2color,A2phosphorousA2andA2iron

HazardousA2wastesA2includeA2-A2Ans--cyanide,A2sulfides,A2organicsA2andA2gasoline

, SynergisticA2EffectA2-A2Ans--reactionA2betweenA2wasteA2streams

HowA2manyA2cubicA2feetA2ofA2screeningsA2perA2millionA2gallonsA2ofA2wastewaterA2willA2co
arseA2screensA2remove?A2-A2Ans--0.5A2toA26.0

PreaerationA2benefitsA2-A2Ans--
freshenA2wastewater,A2scourA2gasesA2andA2removeA2grease

MainA2purposeA2ofA2sedimentationA2tankA2-A2Ans--
allowA2scumA2toA2riseA2andA2solidsA2toA2settleA2underA2quiescentA2(lowA2velocity)A2conditio
ns

HowA2muchA2settleableA2solidsA2isA2removedA2inA2primaryA2settling?A2-A2Ans--90-95%

HowA2muchA2suspendedA2solidsA2isA2removedA2inA2primaryA2settling?A2-A2Ans--50-70%

HowA2muchA2BODA2isA2removedA2inA2primaryA2settling?A2-A2Ans--35%

HowA2muchA2totalA2organicA2matterA2isA2removedA2inA2primaryA2settling?A2-A2Ans--20-30%

WhatA2percentageA2ofA2suspendedA2solidsA2willA2settleA2outA2withinA22A2hours?A2-A2Ans--
70%

RequiredA2minutesA2ofA2detentionA2timeA2forA2peakA2flow?A2-A2Ans--54

RequiredA2minutesA2ofA2detentionA2timeA2forA2designA2flow?A2-A2Ans--108

BenefitsA2ofA2removingA2gritA2-A2Ans--
wearA2onA2pumpA2impellers,A2lineA2stoppagesA2andA2takingA2upA2space

TooA2highA2aA2velocityA2inA2aA2gritA2chamberA2canA2resultA2inA2what?A2-A2Ans--
excessA2gritA2inA2primaryA2clarifier

OneA2ofA2theA2benefitsA2ofA2pre-aerationA2isA2-A2Ans--gasA2andA2greaseA2removal

WhyA2doesA2gritA2needA2toA2beA2washed?A2-A2Ans--
becauseA2organicA2matterA2clingsA2toA2it

WhatA2isA2aA2flowA2equalizationA2usedA2for?A2-A2Ans--
toA2reduceA2excessiveA2flowsA2orA2organicA2loads

HowA2canA2greaseA2beA2removedA2beforeA2sedimentation?A2-A2Ans--
byA2chlorination,A2aerationA2andA2skimming

AA2primaryA2clarifierA2shouldA2removeA2mostA2ofA2what?A2-A2Ans--settleableA2solids