ASTM_D_3922_-_89_1993e1_scan.pdf

ASTM D3922 89-0759510 0533790 lL2 m Designation:D 3922-89(Reapproved 1993)”AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.Philadelphia,Pa 19103 Reprinted from the Annual Book of ASTM Standards.Copyright ASTM If not listed in the current combined index,will appear in the neXt edition.Standard Practice for Estimating the Operating Performance of Granular Activated Carbon for Removal of Soluble Pollutants from Water This standard is issued under the fixed designation D 3922;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(0 indicates an editorial change since the last revision or reapproval.“NOTE-Section 13 was added editorially in September 1993.1.Scope 1.1 This practice covers the determination of the oper-ating capacity of granular activated carbon(GAC)to remove soluble pollutants from water.This practice can be used to determine the operating capacity of virgin and reactivated granular activated carbons.1.2 This practice can be applied to all types of water,including industrial waste waters,potable waters,sanitary wastes and emuent waters.1.3 This practice is recommended to determine the oper-ating capacity of GAC on a weight basis for removals of the following from water,but is not limited to these:1.3.1 Removal of color,1.3.2 Taste and odor,1.3.3 Toxicants,1.3.4 Surface active agents,1.3.5 BOD,from sanitary waste waters,and 1.3.6 TOC from industrial waste waters.1.4 This standard does not purport to address all of the safety problems,if any,associated with its use.It is the responsibility 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 Documents 2.1 ASTM Standards:D 1129 Terminology Relating to WateI3 D 1193 Specification for Reagent WateI5 D2652 Definitions of Terms Relating to Activated Carbon3 D 2867 Test Method for Moisture in Activated Carbon D 3370 Practices for Sampling WaterZ E 300 Practice for Sampling Industrial Chemicals4 3.Terminology 3.1 DeJinitions:3.1.1 For definitions of terms used in this practice relating to activated carbon,refer to Definitions D 2652.This practice is under the jurisdiction of ASTM Committee D-28 on Activated Carbon and is the direct responsibility of Subcommittee D28.02 on Liquid Phase Evaluation Task Current edition approved Mar.31,1989.Published August 1989.Originally published as D 3922-80.Last previous edition D 3922-80.2 Annual Book of ASTM Slandards,Vol I I.Ol,J Annual Book ojASTM Standa&,Vol 15.0 I.4 Annual Book of ASTM Standards,Vol 15.05.3.1.2 For definitions of terms used in this practice relating to water,refer to Terminology D 1129.4.Summary of Practice 4.1 The operating capacity of the GAC is determined by passing the water sample at a fixed flow rate through a bed of GAC contained in a column until the effluent quality has degraded to a predetermined level.5.Significance and Use 5.1 This practice can be used to determine etlluent quality obtainable when treating a water sample with GAC of removal of soluble pollutants,and is generally perform&I at 20C.However,other temperatures may be used and re-corded.5.2 This practice can be used to compare different types of GAC.6.Interference 6.1 Insoluble materials,such as oils,emulsions,and solid particulates,will interfere with the adsorption of solubles by the GAC.These materials must be removed by suitable means.7.Apparatus(see Fig.1)7.1 The test assembly consists of the following:7.1.1 Column,vertically supported,25.4 f 2.5 mm(1.O i 0.1 in.)inside diameter and approximately 92 cm(36 in.)long.(The inside diameter of the column should be at least 10 times the average particle diameter of the GAC being evaluated.Connections shall be provided at top and bottom for admission and discharge of solution and back wash capabilities as described in 10.3.Adequate means for mea-suring flow and through-put volume shall be provided.7.1.2 Support for GAC-A suggested support utilizes a 60-mesh screen of a material compatible with the solution.Other supports such as glass beads or pea-size gravel may be used.8.Reagents and Materials 8.1 Granular activated carbon(GAC).8.2 Reagent grade water,Type IV.8.2.1 Purity of Water-Unless otherwise indicated,refer-ence to water shall be understood to mean Type IV reagent water conforming to Specification D 1193.1 NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM D3922 89-07595l,O 0533793 059 m(#I D 3922 Backwash Outlet-Height Shall Be Adjustable Calibrated Column 2.5 cm.Diam.Sample For Test Support FIG.1 Typical Arrangement of Apparatus for Performance Testing of GAC 9.Sampling 9.1 Collect the water sample in accordance with Practices D 3370.9.2 Collect and prepare the sample