1、Designation:D521717Standard Guide forDetection of Fouling and Degradation of Particulate IonExchange Materials1This standard is issued under the fixed designation D5217;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A 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 guide presents a series of tests and evaluationsintended to detect fouling and degradation of particulate ionexchange mate
3、rials.Suggestions on reducing fouling and oncleaning resins are given.1.2 This guide is to be used only as an aid in the evaluationof particulate ion exchange material performance and does notpurport to address all possible causes of unsatisfactory perfor-mance.The evaluations of mechanical and oper
4、ational prob-lems are not addressed.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regu
5、latory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Or
6、ganization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1782 Test Methods for Operating Performance of Particu-late Cation-Exchange MaterialsD2187 Test Methods and Practices for Evaluating Physicaland Chemical Properties of Pa
7、rticulate Ion-ExchangeResinsD2332 Practice for Analysis of Water-Formed Deposits byWavelength-Dispersive X-Ray FluorescenceD2687 Practices for Sampling Particulate Ion-Exchange Ma-terialsD3087 Test Method for Operating Performance of Anion-Exchange Materials for Strong Acid RemovalD3375 Test Method
8、for Column Capacity of ParticulateMixed Bed IonExchange MaterialsD3682 Test Method for Major and Minor Elements inCombustion Residues from Coal Utilization ProcessesD3683 Test Method for Trace Elements in Coal and CokeAsh by Atomic AbsorptionD5042 Test Method for Estimating the Organic Fouling ofPar
9、ticulate Anion Exchange ResinsD6302 Practice for Evaluating the Kinetic Behavior of IonExchange ResinsE830 Test Method for Ash in the Analysis Sample ofRefuse-Derived Fuel(Withdrawn 2011)33.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129.3.2
10、Definitions of Terms Specific to This Standard:3.2.1 air lance,vto subject to a stream of air underpressure.3.2.2 organic fouling,nthe buildup of organic material inor on anion exchange resins by sorption during the servicecycle and incomplete removal during normal regeneration.4.Significance and Us
11、e4.1 Resins used in demineralization systems may deterioratedue to many factors including chemical attack,fouling byorganic and inorganic materials,mishandling,or the effects ofaging.Detection of degradation or fouling may be important indetermining the cause of poor demineralizer performance.5.Samp
12、ling5.1 Follow the recommendations of Practices D2687 forobtaining samples of particulate ion exchange materials.Coresamples are important for obtaining representative samples;1This guide is under the jurisdiction of ASTM Committee D19 on Water and isthe direct responsibility of Subcommittee D19.08
13、on Membranes and Ion ExchangeMaterials.Current edition approved Nov.1,2017.Published November 2017.Originallyapproved in 1991.Last previous edition approved in 2009 as D5217 91(2009).DOI:10.1520/D5217-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Servi
14、ce at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohock
15、en,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organizatio
16、n Technical Barriers to Trade(TBT)Committee.1 however,special problems may dictate other samplingrequirements,such as surface,interface,or other samples.6.Preliminary Examination6.1 Examine the sample visually or with the aid of amagnifier for any abnormalities.Note any unusual color,precipitates,biological material(slime),particulate matter,orsmall pieces or fragments of resin.Note that the color of resinmay vary from lot to lot or with normal use and would not beconsidered unusual.6.2 Note any