The Lewabrane® S HR type is the new Reverse Osmosis (RO) spiral wound element produced by LANXESS for seawater desalination with high rejection. The chemistry of this membrane is a higher cross-linking of the polyamide layer. This higher degree of polymerization improves the me-chanical and chemical stability of the thin barrier layer offering greater durability and a more stable rejection of mixed ion salt solutions and organic periods.
LEWABRANE® S HR
Key Properties
The new Lewabrane® S type for high rejection (HR) has, due to its high cross-linked polymeric layer, these key attributes: Low salt passage Highflowproductivity
SEAWATER DESALINATION ENERGIZED BY
The Lewabrane® S type product family was designed to meet and exceed the nominal performance standards for desalination. Three different types of the high rejection series are availableROS400HR,ROS440HRandROS085HR4040.TheROelementsROS400HRandROS440HRhaveastandardlengthof40inches(1,016mm)andadiameterof8inches(201mm)suitableforusewith-instandardROmembraneequipment.Theproductfamilyalsoincludesa4-inch(101mm)ROelementsuitableforsmaller applications. All 8-inch diameter elements meettoday’s industrystandardsforROmembranesurfaceareaat400and440squarefeetper8-inchby40-inchelement.
Seawater (S) high rejection (HR)
Permeate flow Salt rejection Membrane area Feed spacer thickness
S085HR4040 5.2m3/day 99.8% 7.9 m2 0.8mm
1380gpd 99.8% 85ft2 31mil
S400HR 24.6m3/day 99.8% 37.2m2 0.8mm
6500gpd 99.8% 400ft2 31mil
S440HR 27.3m3/day 99.8% 40.9m2 0.7mm
7200gpd 99.8% 440ft2 28mil
Test conditions:appliedpressure55.2bar(800psi),NaClconcentration32,000mg/l,25°C(77°F),pH8andrecoveryrate8%.
Improvedbarrierlayerchemistry More stable salt rejection during operating lifetime Improvedorganiccompoundrejection
Health and Safety Information:AppropriateliteraturehasbeenassembledwhichprovidesinformationconcerningthehealthandsafetyprecautionsthatmustbeobservedwhenhandlingtheLANXESSproductsmentionedinthispu-blication.FormaterialsmentionedwhicharenotLANXESSproducts,appropriate industrialhygieneandothersafetyprecautions recommended by their manufacturers should be followed. Before working with any of these products, you mustreadandbecomefamiliarwiththeavailableinformationontheirhazards,properuseandhandling.Thiscannotbeoveremphasized.Informationisavailableinseveralforms,e.g.,materialsafetydatasheets,productinformationandproductlabels.ConsultyourLANXESSrepresentativeinGermanyorcontacttheRegulatoryAffairsandProductSafetyDepartmentofLANXESSDeutschlandGmbHor–forbusinessintheUSA–theLANXESSCorporationProductSafetyandRegulatoryAffairsDepartmentinPittsburgh,PA,USA.
Regulatory Compliance Information: Some of the end uses of the products described in this publication must com-plywithapplicableregulations,suchastheFDA,BfR,NSF,USDA,andCPSC.Ifyouhaveanyquestionsontheregulatorystatusoftheseproducts,contact–forbusinessintheUSA-,theLANXESSCorporationRegulatoryAffairsandProductSafetyDepartmentinPittsburgh,PA,USAorforbusinessoutsideUStheRegulatoryAffairsandProductSafetyDepart-mentofLANXESSDeutschlandGmbHinGermany.Themanner inwhichyouuseand thepurpose towhichyouputandutilizeourproducts, technical assistanceandinformation (whetherverbal,writtenorbywayofproductionevaluations), includingany suggested formulationsandrecommendationsarebeyondourcontrol.Therefore, it is imperative thatyou testourproducts, technicalassistanceand information to determine to your own satisfaction whether they are suitable for your intended uses and applications. This application-specific analysis must at least include testing to determine suitability from a technical as well as health, safety,andenvironmentalstandpoint.Suchtestinghasnotnecessarilybeendonebyus.Unlessweotherwiseagreeinwriting, all products are sold strictly pursuant to the terms of our standard conditions of sale. All information and technical assistance isgivenwithoutwarrantyorguaranteeand issubject tochangewithoutnotice. It isexpresslyunderstoodand agreed that you assume and hereby expressly release us from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information.Anystatementorrecommendationnotcontainedhereinisunauthorizedandshallnotbindus.Nothinghereinshallbeconstruedasarecommendationtouseanyproductinconflictwithpatentscoveringanymaterialoritsuse.Nolicenseisimplied or in fact granted under the claims of any patent.
AlltrademarksaretrademarksoftheLANXESSGroup,unlessotherwisespecified.Status05/2014 0012P-EN|05/2014
LEWABRANE® S HR
We are happy to support your business. Please contact us for additional information: visit www.lewabrane.com
Application: Seawater desalination
Contact
Service and Support
The Lewabrane® S HR type was designed for seawater desalination where a high rejection is necessary. The po-lymerisationoftheselectivepolyamidelayerisimprovedtoachieveahighsaltrejectionatchangingflowconditionsliketemperature, salt content and pH. Therefore a constant high permeatequalitycanbereachedwhichisimportantforpo-table or industrial water applications.
Technical Contact: JensLipnizki,HeadofTechnicalMarketingMembranesLANXESSDeutschlandGmbH,Kennedyplatz1,50569Cologne,GermanyPhone:+4922188852013
Marketing Contact:AlexanderScheffler,DirectorMembraneBusiness LANXESSDeutschlandGmbH, Kennedyplatz1,50569Cologne,Germany Phone:+4922188858558
LANXESS offers with the LewaPlus™ design software a comprehensivesoftwaredesigntoolforROmembraneandionexchangeresin(IX)systemswhichisavailableinseverallanguages. It combines the Lewabrane®RO membrane de-sign with the existing Lewatit® ion exchange resin design, allowingthedesignertomoveseamlesslyfromROdesignto ion exchange design all within the same design software.
Forseawaterapplicationitoffersdifferentenergyrecoverydevicesliketurbochargerorisobaricdeviceandmorethan5000possible configuration including split pass, boosterpump or concentrate recirculation to different passes
http://lewabrane.com/uploads/tx-lxsmatrix/Water_Info_Room.pdf
