新型浮閥濾池研制與模型試驗.pdf

1、華中科技大學碩士學位論文新型浮閥濾池研制與模型試驗姓名：王姣申請學位級別：碩士專業(yè)：市政工程指導教師：范躍華20061028華中科技大學碩士學位論文華中科技大學碩士學位論文IIAbstractTheconstructionbureauhasissuedWaterQualityStardsfUrbanWaterQualityintheyearof2005Comparingtothefmalnationalstarditreferstoam

2、estrictlywaterquality:Thenumberofcheckeditemhasincreasedto101from35theturbiditystardhasbeenchangedto1NTUitaddsganismindexpesticidecontrolindexsoon.InthebigcitiesofourCountryitcouldreachabovewaterqualitystardsbuttoanumber

3、ofdlesmalltownsthesupplywatercan’taccdwiththenewstard.Thefilterasthemostimptantunitofthenmalwatertreatedtechniquesflowfmodernwatersupplyplantitstechniquerefmiscertainlyveryimptantwhereasthebackwashingfacility’simprovemen

4、tisthekeypointbecauseitswkperfmanceimpactsdirectlyonthefilter’swk..Wecarriedouttheinnovationresearchtothewashingdevicegaswatersupplyfacilityofbackwashingsystemfnmalfilterinthedlesmalltownsinthispaper.Onthebaseofabsbingin

5、thenewwashingabstractofshutterfilterthenewbackwashingfacilityadoptsafloatvalvewhichismesuitabletothesubsidinglawoffiltermaterial.Itiswellknownthatbackwashingwithgaswatercouldgetbestresultffilterwashing.Sothegaswatersuppl

6、ysysteminthispaperwillcombinethepooltypeoftwovalvesfilternmalsiphonfilterwhichareusedfrequentlyinourcountryabsbinthefmingprincipleofwashinggascushionlayerintheVfiltershutterfilteradoptcrosspipestructurefspecialopenfmatio

7、n.Weeduceoutanewfmulafcalculatingdrainagecapabilityofthenewfloatvalvefacilityfromthetheyhaveitcheckedmodifiedbyusingmuchdatafrommodelexperiments.Itcarriesoutwaterwashinggaswashingwashingwithbothwatergas.thesethreekindsex

8、perimentstothefacilityfwatergassupplerespectively.Theresultisasfollowing:whenonlywashingwithwatertheunifmityofwatersupplyshouldsatisfythefilterwashingrequirementopenarearatiomustlessthan0.466%whenitissmallitmainlyaffects