防堵除沙型取水净水机流态模拟与结构优化

12123121．4000452．4000443．519002、Fluent、、、。、、50．33%、70．17%、29．17%。。TU991C1000－4602201323－0076－05FlowPatternSimulationandStructureOptimizationofAnti-blockingandDesandingMachineforWaterIntakeandPurificationZHANGZhi12ZUShi-qing12QILi-hua3FANGong-duan121．KeyLaboratoryofThreeGorgesＲeservoirＲegion’sEco-Environment＜MinistryofEducation＞ChongqingUniversityChongqing400045China2．FacultyofUrbanConstructionandEnvironmentalEngineeringChongqingUniversityChongqing400044China3．ZhuhaiInstituteofUrbanPlanningandDesignZhuhai519002ChinaAbstractSurfacewaterinChongqingCityisnotsuitableasawatersourceforheatpumpsystemsdirectlybecauseofitshighsandcontentandturbidity．Basedontheprinciplesofinclinedlamellarpre-cipitationananti-blockinganddesandingmachineforwaterintakeandpurificationwasdesigned．TheflowcharacteristicsofthemachineweresimulatedusingFluentsoftware．Accordingtothesimulationthestructureofthemachinewasoptimizedtodeterminethebasicstructureincludingintakeguideplatesumbrellainclinedplatewater-collectingpipeandoutlet．Inthefieldtesttheaverageremovalratesofturbiditysandandalgaewere50．33%70．17%and29．17%respectively．Sandinwatersourcescouldbeeffectivelyremovedduringwaterintaketherebyreducingthepressureinsubsequentprocesses．Thedevelopmentprocessofthemachinecouldbeshortenedthroughpre-simulationbyfluidsimulationsoftware．Keywordsanti-blockinganddesandingwaterintakeheadlaminarflowmodelnumericalsimulation、、。、1、·67·2923201312CHINAWATEＲ＆WASTEWATEＲVol．29No．23Dec．2013。、。2～7。Flu-ent8。11.1。9u=ρp－ρl18μgd21ρpρluμgd。d95=0．075mm10≥0．075mm95%ρp=2．65×103kg/m3ρl=1．00×103kg/m3μ=1．011Pa·sg=9．8N/kg1u=4．7mm/s1m217m3/h60°。4。1.2＜100。FluentLami-nar11。1.2.1、uixj=0。1.2.212～141。60°30mm50mm693mm400mm50mm75mm。1Fig．1Sketchmapofmachinestructure1.2.34．7mm/s、。22.1、。20．05m/s。3riihjvijAijQi、a。·77·．watergasheat．com2923Aij=πari+ri+1－2a·hj槡/3Qi=Ai0·v=Aij·vi{j2、vijvi+1j=Ai0·v/AijAi+10·v/Ai+1j=Ai0·Ai+1jAi+10·Aij323vij＞vi+1j。2。2Y=0Fig．2VelocitynephogramofwaterintakeheadY=03Fig．3Sketchmapofwettedcrosssection①②③④。2.2①②、。。4。4Fig．4Sketchmapofoptimizedmachinestructure2.2.156。5Y=0Fig．5VelocitynephogramofoptimizedwaterintakeheadY=0·87·2923．watergasheat．com6AFig．6DistributionmapofvelocityofsectionAafteroptimization56①A②③。2.2.21。《》GB50019—2003《》GB50366—2005。1Tab．1SurfacewaterqualityinaplaceofChongqingpH6．5～8．57．72～9．95CaO/mg·L－1＜20080～220/mg·L－1＜3000500～800Cl－/mg·L－1＜100SO2－4/mg·L－1＜200Fe2+/mg·L－1＜1/mg·L－1＜1015～214。pH、、、、、、、TN、TP、COD、11pH、、TN、TP、COD562#、4#、6#1#、3#、5#62。2、Tab．2Influentandeffluentqualityofwaterintakehead1#2#3#4#5#6#/μS·cm－1718694715696629620628618675673680672CaO/mg·L－1120116119117210158209209273261276259CaCO3/mg·L－1132124130124239238239232263259276263/NTU10．17．09298．0415．89．4837．89．284．613．8613．24．06/mg·L－11202412410208636281041247617075/104·mL－164．241．76645．564．642．864．642．766．849．45647．52、、10%、、3。2、。25%～35%·97·．watergasheat．com2923。。3①≥0．075mm95%4．7mm/s。②Fluent、、。。③、、、。1．D．2010．2．J．20072311102－104．3．J．200527667－70．4．J．201127963－66．5．J．2006221925－28．6．J．200521458－61．7．J．20062219100－104．8．P．200820238478．82009－09－23．9．4M．1999．10．D．2010．11．———CFDM．2004．12．J．2009361279－83．13．J．201036430－32．14．P．02229121．02003－04－09．1960－、。[e-mail]2013－05－12·08·2923．watergasheat．com