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Chuanyi Water Treatment CO.,Ltd
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EDI System(Water Treatment)

EDI System(Water Treatment)

Supply Ability : 1000

Price : USD 500 / pcs

Delivery Time : about two weeks

Price Condition : FOB QingDao

Packaging Details : plywood packaging

MOQ : 1

Port : Qingdao

Place of Origin : China

Brand Name : chuanyi

Category : Water Treatment

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warranty:oneyear

certificate:CEISO9001ISO2000

origin:China(mainland)

minimumorder:oneset

EDIcanbeusedanywhereingeneralindustrywheredeionizedwaterisadvantageous.Ultrapurewaterisusedformicroelectronicandsemiconductorproduction,forbiomedicalandlaboratoryuse,bypharmaceuticalcompounders,aspretreatmentforstills,forboilerwaterduringpowergeneration,andinthefoodandbeverageindustry.

AtypicalEDImodulewillproducepermeatewaterofapproximately15-17megohmresistivitywheninstalledandoperatedperthemanufacturer'srecommendations.Resistivityinthisrangeisfarbetterthantherequirementsformostpharmaceuticalapplications,generallyadequateforelectronicsandothertraditionalDIapplications,andslightlybelowtherequirementsforthe18.2resistivityrequiredforsomesemiconductorapplications.

TheconventionalultrapurewaterprocesseshaveincludedROastheprimarymethodtoreducetotaldissolvedsolids(TDS)andDIasthesecondarymethodtoremoveTDStoultrapurelevels.IncaseswherethefeedwaterTDSishighorareductioninthefrequencyoftheDIregenerationisdesired,adouble-passROsystemcanbeappliedastheprimaryTDS-reducingcomponentoftheoverallultrapurewatersystem.

TheEDIprocess

Thetransferofionsacrosstheappropriatelychargedboundarymembranesintoneighboringcompartmentstransformsthesecompartmentsintoconcentratingsections.Waterdoesnotflowthroughthemembranes.Itistheionsthatmakethispassage,directionallymotivatedbythedirectcurrent.

ThetypicalEDImoduleisconstructedusingthreeseparatestreamsofwater,eachforaspecificpurpose.Thefeed/productstreamprovidestheentryoffeedwatertotheEDImoduleandtheexitofEDIpermeatefromtheEDImodule.Recoveryof90

95percentistypical,leaving5-10percentofthefeedwatertotheothertwostreams.Theconcentratestreamprovidesthemeanstocollecttheionswhichhaveexitedthefeedstream,andremovethemfromtheEDImodule.TheelectrolytestreamprovidesacontinuousflowofwateracrosstheEDIelectrodestopreventaccumulationofionsattheelectrodes.

Inmostapplications,thefeedwaterwillbesplitintothethreestreams.mountingoneormoreEDImoduleswithinterconnectingpiping,valves,instrumentationandaDCpowersupply.ThecapacityofEDIsystemsrangefromlessthan1gallonperminute(gpm)ofproducttohundredsofgallonsperminute,completelyscalableasafunctionofthenumberofEDImodulesinstalledontheskid.

EDIdoesnotrequirechemicalregenerationoftheresinduetoaspecialfeatureofthisprocessthatcausesthewatermoleculesto“split”intohydroxyl(OH-)orhydrogen(H+)atoms.ThelocalproductionofOH-andH+withinthemixedion-exchangeresinsresultsintheconstantregenerationoftheresinswithouttheadditionofchemicals.Eliminatingtheneedforchemicalregenerationreducesoperatingcosts,simplifiesthecontrolprocess,andmakesthesystemmoreeasilyexpandable.·

Continuousoperation.

Inadditiontotheeliminationoftheneedforhazardouschemicals,anRO/EDIsystemmaybeoperatedcontinuouslybecausethereisnodowntimeneededforregeneration.


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