PBH 334 Final exam with correct answers

PBH334Finalexamwithcorrect
answers

WhichofthefollowingsectorsconsumesthelargestamountofwaterintheUnitedStateseveryyear?

-Thermoelectric-powergeneration

-Irrigation

-Domestic(residential)use

-Industrial activities-correct answer✔✔-Thermoelectric-power generation



WhichofthefollowingsourcesCANNOTserveasasourceofdrinkingwater?

-Groundwater

-Lakes

-Rivers

-Oceans-correct answer✔✔-Oceans



WhichofthefollowingisNOTatreatmentstageinwatertreatmentplants?

-Coagulation

-Tertiarytreatment

-Disinfection

-Filtration -correct answer✔✔-Tertiarytreatment



Suspendedsolidparticlesinnatural (raw)watercanberemovedbybothcoagulationand
sedimentation.Thedifference betweencoagulationandsedimentation liesinthatcoagulation
_________ require theadditionofchemicalsandismoreefficientinremoving______solidparticles,
whereassedimentation________ require theadditionofchemicalsandismoreefficientinremoving
_________ solidparticles.

,-does,smaller,doesnot,larger

-does,larger,doesnot,smaller

-doesnot,larger,does,smaller

-doesnot,smaller,does,larger-correct answer✔✔-does,smaller,doesnot,larger



WhichofthefollowingisNOTthepurposeofwatertreatment?

-Toremove toxicchemicals

-Todecomposetaste/odor-formingcompounds

-Togenerate disinfectionbyproducts

-Toeliminate pathogens-correct answer✔✔-Togenerate disinfection byproducts



WhichofthefollowingisNOTthepurposeofwastewatertreatment?

-Toremove organicmatter

-Tomakethetreatedwaterdrinkablebypublic

-Toremove suspendedsolids

-Toeliminate pathogens-correct answer✔✔-Tomakethetreatedwaterdrinkable bypublic



Inwastewatertreatmentplants,primary, secondary,andtertiarytreatmentsaredesignedtoremove
____,____,and____,respectively.

-organicmatter;pathogensandnutrients;suspendedsolids

-suspendedsolids;organicmatter;pathogensandnutrients

-organicmatter;suspendedsolids;pathogensandnutrients

-pathogensandnutrients;suspendedsolids;organicmatter-correct answer✔✔-suspendedsolids;
organicmatter;pathogensandnutrients



Whichgasispumpedintotheaerationtanktopromotethegrowthofmicroorganismsinwastewater
treatment?

, -Oxygen

-Hydrogen

-Nitrogen

-Chlorine-correct answer✔✔-Oxygen



WhichofthefollowingstatementisINCORRECTaboutnutrientsinwastewater?

-Whentalkingaboutnutrientsinwastewater,weareprimarilyreferringtonitrogen- andphosphate-
basedchemicals

-Releasingnutrientsintotheaquaticenvironmentcancauseeutrophication

-Manyofthenutrientsindomesticwastewatercomefromhumanactivities

-Wastewatertreatmentplantsdonotusuallyremovenutrientsfromwastewaterbecausetheybenefit
thegrowthoflivingorganisms-correct answer✔✔-Wastewatertreatmentplantsdonotusually
remove nutrientsfromwastewaterbecausetheybenefitthegrowthoflivingorganisms



WhichofthefollowingisNOTanatural sourceofairpollution?

-Forestfires

-Volcaniceruptions

-Lawnandgardenequipment

-Duststorms-correct answer✔✔-Lawnandgardenequipment



WhichofthefollowingisNOTastationarysourceofairpollution?

-Awastewatertreatmentplant

-Athermoelectric powerstation

-Aschoolbus

-TheTeslaGigafactory-correct answer✔✔-Aschoolbus



WhichofthefollowingstatementsisINCORRECTregardingnitrogenoxides(NOx)?