1、Designation:D509020Standard Practice forStandardizing Ultrafiltration Permeate Flow PerformanceData1This standard is issued under the fixed designation D5090;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、 number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the standardization of permeateflow for ultrafiltration(UF)systems.1.2 This practice is applicable to natural waters
3、includingbrackish waters,seawaters,and ultrapure waters includingthose used in power generation and microelectronics andpharmaceuticals production.It is not necessarily applicable towaste waters.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It
4、 is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on st
5、andard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD6161 Termin
6、ology Used for Microfiltration,Ultrafiltration,Nanofiltration,and Reverse Osmosis Membrane Processes3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminologies D1129 and D6161.3.2 Definitions of Terms Specific to This Standard:3.2.1 concentrate,reject,or b
7、rine,nthat portion of feedwhich does not pass through the membrane.3.2.2 device pressure drop(P),nthe difference betweenthe feed pressure and the concentrate pressure.3.2.3 feed,nthe fluid that enters the device.3.2.4 permeate,nthat portion of the feed which passesthrough the membrane.3.2.5 permeate
8、 flow rate,nthe quantity of permeate pro-duced per unit time.3.2.6 recovery or conversion,nthe ratio of permeate flowrate to total feed flow rate,expressed as a percent.3.2.7 stage,na device or group of devices,several ofwhich may be included in a system,which share commonmanifolds on the feed,conce
9、ntrate and permeate streamplumbing.3.2.7.1 DiscussionThe concentrate from one stage be-comes the feed to the following stage.3.2.8 ultrafiltration device,na single housing(vessel),comprising or containing an ultrafiltration element or multipleelements and supporting materials.4.Summary of Practice4.
10、1 This practice consists of calculating the permeate flowof UF systems at a standard set of conditions using dataobtained at actual operating conditions.5.Significance and Use5.1 During the operation of a UF system,conditions includ-ing pressure and temperature can vary,causing permeate flowto chang
11、e(see Note 1).To effectively evaluate systemperformance,it is necessary to compare permeate flow data atthe same conditions.Since data may not always be obtained atthe same conditions,it is necessary to convert the UF dataobtained at actual conditions to a set of constant conditions,thereby standard
12、izing the data.The user of this practicedetermines the standard conditions.This practice gives theprocedure to standardize UF data on pure water only.NOTE1Feed concentration,crossflow velocity,and both device andtotal system recovery will also influence permeate rate,especially whenoperating on othe
13、r than pure water.This practice does not address thosesystem conditions.1This practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.08 on Membranes and IonExchange Materials.Current edition approved Nov.1,2020.Published Novemer 2020.Ori
14、ginallyapproved in 1990.Last previous edition approved in 2007 as D5090 07 which waswithdrawn July 2020 and reinstated in November 2020.DOI:10.1520/D5090-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMSt
15、andards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on
16、 standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.15.2 This practice can be used for systems which containspiral-wound,tubular,plate and frame,and hollow fiberdevices.5.3 This practice can be used for a single-element or amulti-element system.However,if the UF system is staged,standardize the permeate flow and salt passage for each sta