水质工程学智慧树知到答案章节测试2023年哈尔滨工业大学

第一章测试Thechallengesofurbanwaterresourcesinclude().

A:Capitalandoperationalcostsofwatersupplyforlongdistancetransportationarehigh.

B:Thestandardsofurbanwaterqualityarehighduetotheincreasingconcernsaboutthesafetyofurbanwatersources.

C:Highriskofurbanwaterpollution.

D:Urbanwaterdistributionrenderslargeenergyconsumption.

答案:ABCDItisrelativelyhardtoseparatesaltfromwater,becauseionssuchasCa2+，Mg2+，K+

aretightlysurroundedbywatermolecules.

A:对

B:错

答案:ALakesandreservoirwatersusuallyhavelowwatermobility,highturbidity,andrelativelystablewaterquality.()

A:错

B:对

答案:AHeavymetalscanbeconcentratedinplantrootsoraquaticanimals,causinggreatdangertolivingorganisms.()

A:对

B:错

答案:AIntheUS,differentsewageplantsfollowthesamedischargestandards.()

A:错

B:对

答案:A第二章测试Increasingionicstrengthwouldcompresstheelectricdoublelayerandincreasethestabilityofthecolloid.()

A:错

B:对

答案:AGvalueandGTvalueareemployedtodesigncoagulationtanks,becausetheycandescribethecoagulationprocesscomprehensively.()

A:错

B:对

答案:AThehydraulicconditionoftherotarybaffleplateflocculationtankisbetterthanthatofthereciprocatingtype,andheadlossoftherotarytypeis40%lessthanthatofthereciprocatingtype.()

A:错

B:对

答案:BTherearemanywaysforthecontrolofcoagulantdosageandautomaticdetection,including().

A:dosingaccordingtoexperience

B:streamingcurrentdetector(SCD)

C:lighttransmissionpulsationdetector

D:establishingamathematicalmodelaccordingtothequantityandqualityofrawwater

答案:BCDWhichonebelowbelongstoorganiccoagulant().

A:polyacrylamide(PAM)

B:limeglue

C:polyaluminumchloride(PAC)

D:aluminumsulfate

答案:A第三章测试Whichofthefollowingmeasurecouldnotimprovethesettlingefficiencyinsedimentationtank?()

A:Toimprovetheperformanceofflocculationbeforesedimentation

B:Torecyclethesludgetoimprovethesizeofparticles

C:Toincreasetheflowrate

D:Toincreasethesurfaceareaofthetank

答案:CThefeedwaterwillgointotheupperpartofthesedimentationtankunderthecaseofdensitycurrentofhighturbidwater,leadingtothedeteriorationoftheeffluentquality.（）

A:对

B:错

答案:BThereisanineffectivezoneexistsintheinclinedtube/platesedimentationtank.Theineffectivezonewouldincreaseifthesettlingzoneissmallinthetank.()

A:错

B:对

答案:BWhichofthefollowingmethodscanrecovertheadsorptioncapacityofsludgeinclarifierprocess?()

A:Todischargethesludgecompletelyintheclarifier

B:Tocirculatethesludgebyawaterjet

C:Togenerateapulsetobreakthelargeflocs

D:Tocirculatethesludgemechanically

答案:BCDθpresentsthecontactangleofwateronthesolidsurface.Whichofthepollutant(s)withthefollowingvalueofthecontactanglecannotberemovedbyairflotationprocess.()

A:θ=85°

B:θ=150°

C:θ=1°

D:θ=95°

答案:AC第四章测试Thebiofilminslowsandfiltrationhasnegativeeffectonwaterqualitybecauseitmayincreasetheloadofdisinfection.（）

A:错

B:对

答案:AThenegativewaterheadwillnotappearin()process(es)?

A:Conventionalrapidfilter

B:Valvelessfilter

C:V-shapedfilter

D:Siphonfilter

答案:BDTheexpansionrateofsingle-layerquartzsandisusuallyabout40%-45%.()

A:错

B:对

答案:BTheeffectiveparticlesizeoffiltermediareferstotheparticlesizeoffiltermedialessthan()percentofthetotalweightafterscreening.

A:80

B:75

C:10

D:5

答案:CSupportinglayerinthefiltercanalsocontributetotheuniformdistributionofwatertosomeextent.()

A:对

B:错

答案:A第五章测试Langmuirisothermassumesthatallsurfacesiteshaveequalactivity,whichmeansadsorptionenergyisindependentoftheextentofsurfacecoverageθ.()

A:错

B:对

答案:BInsorptionprocess,filmdiffusiontransportorporetransportisusuallytheratelimitingstep.()

A:对

B:错

答案:AActivatedcarboncanreactwithwatertreatmentagentssuchascoagulantsanddisinfectants.()

A:对

B:错

答案:AAddinggranularactivatedcarboninintakestructurecanextendcontactingtime.()

A:错

B:对

答案:AIndrinkingwatertreatment,activatedcarboncanberegeneratedbyorganicsolventextraction,suchasmethanol,ethanol,benzene,acetone,andether.()

A:对

B:错

答案:B第六章测试Usually,ozoneandchlorinedioxidearemuchmoreeffectivethanchlorine,whilechloramineisaweakerdisinfectantcomparedwithchlorine.()

A:对

B:错

答案:A80℃watersprayisusuallyemployedtopromotetheevaporationofchlorine.()

A:错

B:对

答案:ASecurityprotectionsforchlorineleakageincludepositive-pressurechlorineabsorptionequipmentandnegative-pressurechlorineabsorptionequipment.Limeorreductantscanalsobeusedtoadsorbchlorine.()

A:对

B:错

答案:AOzonepre-oxidationcanenhancecoagulationthroughdestroyingtheorganiccoatingonthesurfaceofinorganicmatters.()

A:对

B:错

答案:AThechemicalsandmaterialsusedinwatertreatmentcanbetheprecursorsofdisinfectionby-products.()

A:对

B:错

答案:A第七章测试Thefiltrationrateisconstantunderconstant-pressurefiltrationmode.()

A:对

B:错

答案:BIngeneralfiltrationoperations,thecakelayerisactuallythemainfiltermediainsteadofthemembraneitself.()

A:对

B:错

答案:AMicrofiltration(MF),ultrafiltration(UF)andreverseosmosis(RO)areallseparationprocessesthatutilizepressuredifferenceasthedrivingforcetomakesolvent(water)