Page 119 - 《水资源与水工程学报》2022年第3期
P. 119
!33 " ! 3 # & ' ( ) & * + , - Vol.33No.3
2022 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2022
DOI:10.11705/j.issn.1672-643X.2022.03.15
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8IBJK:X703.1 LMNOP:A LQRK:1672643X(2022)03011509
Numericalsimulationofwaterpumpforcedwaterqualityequalizationbasin
underdifferentrefluxratiosandrefluxdistributionpipeheight
1
1
1,2
1
1
ZHANGXinxi ,WANGKai,ZHONGMeiying,FENGChengmin,HUXiaobing,
1
1
1
1
QIUGao,LIJiawei,WANGChen,QINQing
(1.CollegeofArchitecturalEngineering,AnhuiUniversityofTechnology,Ma’anshan243002,China;
2.NanjingTechUniversityPujiangInstitute,Nanjing211200,China)
Abstract:Inviewoftheinfluentwaterqualityfluctuationintheprocessofsewagetreatment,therectan
gularwavewasusedasthefluctuationtypeundertheconditionofcertaininfluentmassflowandinfluent
fluctuationperiodtosimulatetheequalizationprocessofthewaterpumpforcedwaterqualityequalization
basin(WPFWQEB)usingFluent.Theequalizationfunctioncoefficient(y)wasintroducedtothesimu
lation,andthentheeffectsofdifferentrefluxratios(s)andrefluxdistributionpipeheights(h)onthe
equalizationeffectoftheWPFWQEBwereanalyzed.Resultsindicatedthatswasthemainfactoraffecting
theequalizationeffectoftheWPFWQEB,withtheincreaseofs,theyshowedatrendof“rapidgrowth
followedbystabilization”.Firstly,yincreasedfrom0.72to0.82correspondinglywiththeincreaseofs
from0.16to1.00inthe“rapidgrowtharea”;thensincreasedgraduallyto6.00andyto0.92corre
spondinglyinthe“slowgrowtharea”,indicatingthatthelargerthesvalue,thebettertheequalization
effect;however,afterenteringthe“slowgrowtharea”,theinfluenceofsontheequalizationeffectwas
weakened.Furtherstudyrevealedthatthechangeof hhadnosignificanteffectontheequalizationeffect
oftheWPFWQEB ,becauseymerelyfluctuatedfrom0.81to0.85whenhvariedfrom50to350mm,
whichonlyaccountedfor3.7% ofthevariationrange;However,itwasworthnotingthatwhenhwasset
as350mm,thewatermixingandflowvelocityintheoutletareawereenhancedbecausetherefluxdistri
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