ASTM_D_4472_-_08_2014.pdf

Designation:D447208(Reapproved 2014)Standard Guide forRecordkeeping for Reverse Osmosis and NanofiltrationSystems1This standard is issued under the fixed designation D4472;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last 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 covers procedures for well-defined record-keeping of reverse osmosis(RO)and nanofiltration(NF)systems.1.2 This guide includes a start-up report,recordkeeping ofRO and NF operating data,recordkeeping of pretreatmentoperating data,and a maintenance log.1.3 This guide is applicable to waters including brackishwaters and seawaters but is not necessarily applicable towastewaters.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1125 Test Methods for Electrical Conductivity and Resis-tivity of WaterD1129 Terminology Relating to WaterD1253 Test Method for Residual Chlorine in WaterD1889 Test Method for Turbidity of Water(Withdrawn2007)3D3739 Practice for Calculation and Adjustment of theLangelier Saturation Index for Reverse OsmosisD4189 Test Method for Silt Density Index(SDI)of WaterD4194 Test Methods for Operating Characteristics of Re-verse Osmosis and Nanofiltration DevicesD4195 Guide for Water Analysis for Reverse Osmosis andNanofiltration ApplicationD4582 Practice for Calculation and Adjustment of the Stiffand Davis Stability Index for Reverse OsmosisD6161 Terminology Used for Microfiltration,Ultrafiltration,Nanofiltration and Reverse Osmosis Membrane Processes3.Terminology3.1 DefinitionsFor definitions of terms used in this guide,refer to Terminology D1129 and D6161.4.Significance and Use4.1 Proper operation and maintenance of RO and NFsystems are key factors in obtaining successful performance.This guide provides the necessary input for the evaluation ofthe performance of the RO and NF systems,the pretreatmentsystem,and the mechanical equipment in the plant.4.2 This guide is for general guidance only and must not beused in place of the operating manual for a particular plant.4.3 Site-dependent factors prevent specific recommenda-tions for all recordkeeping.Thus,only the more generalrecordkeeping is covered by this guide.4.4 This guide can be used for both brackish and seawatersystems which contain either spiral-wound or hollow-fiberdevices.5.Procedure5.1 Start-Up Report:5.1.1 Provide a complete description of the RO or NF plant.This can be done by using a flow diagram and equipment,instrumentation,and material lists to show water source,pretreatment system,RO or NF configuration,and posttreat-ment system.5.1.2 Record initial performance of RO or NF and pretreat-ment systems as provided in 5.2 and 5.3,respectively.5.1.3 Calibrate all gauges and meters based on manufactur-ers recommendations.5.2 RO or NF Operating Data(see D4194):1This guide is under the jurisdiction of ASTM Committee D19 on Water and isthe direct responsibility of Subcommittee D19.08 on Membranes and Ion ExchangeMaterials.Current edition approved Jan.1,2014.Published March 2014.Originallyapproved in 1985.Last previous edition approved in 2008 as D4472 08.DOI:10.1520/D4472-08R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service 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 Conshohocken,PA 19428-2959.United States1 5.2.1 Record the permeate and brine flows of each stage inthe RO or NF system.5.2.2 Record the feed,permeate,and brine pressures of eachstage.For hollow-fiber devices also record the brine pressurefor each permeator.5.2.3 Record the water temperature of the feed stream afterthe RO or NF pump or of the permeate stream.5.2.4 Record the pH of the feed,permeate,and brinestreams.5.2.5 Record the conductivity of the feed,permeate,andbrine streams for each stage.For hollow-fiber devices,alsorecord the brine conductivity of each permeator.For conduc-tivity measurements use Test Methods D1125.5.2.6 Record the Silt Density Index(SDI)or turbidity of theRO or NF feed stream,or both.For SDI measurements use TestMethod D4189.For turbidity measurement use Test MethodD1889(nephelometric turbidity).5.2.7 Record the Langelier Saturation Index(LSI)of thebrine stream from the last stage.For LSI dete