1、Designation:D597596(Reapproved 2010)Standard Test Method forDetermining the Stability of Compost by Measuring OxygenConsumption1This standard is issued under the fixed designation D5975;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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 test method covers the stability of a compostsample by measuring oxygen consumption after exposure ofthe
3、test compost to a well-stabilized compost under controlled-composting conditions on a laboratory scale involving activeaeration.This test method is designed to yield reproducible andrepeatable results under controlled conditions that resemble theend of the active composting phase.The compost samples
4、 areexposed to a well-stabilized compost inoculum that is preparedfrom municipal solid waste or waste similar to the waste fromwhich the test materials are derived.The aerobic compostingtakes place in an environment where temperature,aeration,andhumidity are monitored closely and controlled.1.2 This
5、 test method yields a cumulative amount of oxygenconsumed/g of volatile solids in the samples over a four-dayperiod.The rate of oxygen consumption is monitored as well.1.3 This test method is applicable to different types ofcompost samples including composts derived from wastes,such as municipal sol
6、id waste,yard waste,source-separatedorganics,biosolids,and other types of organic wastes that donot have toxicity levels that are inhibitory to the microorgan-isms present in aerobic composting systems.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are
7、included in thisstandard.1.5 There is no similar or equivalent ISO method.1.6 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 th
8、e applica-bility of regulatory limitations prior to use.Specific hazardstatements are given in Section 8.2.Referenced Documents2.1 ASTM Standards:2D515 Test Method for Phosphorus In Water(Withdrawn1997)3D883 Terminology Relating to PlasticsD1293 Test Methods for pH of WaterD1888 Methods Of Test for
9、Particulate and Dissolved Matterin Water(Withdrawn 1989)3D2908 Practice for Measuring Volatile Organic Matter inWater by Aqueous-Injection Gas ChromatographyD3590 Test Methods for Total Kjeldahl Nitrogen in WaterD4129 Test Method for Total and Organic Carbon in Waterby High Temperature Oxidation and
10、 by CoulometricDetectionD5338 Test Method for Determining Aerobic Biodegrada-tion of Plastic Materials Under Controlled CompostingConditions,Incorporating Thermophilic Temperatures2.2 APHA-AWWA-WPCF Standards:2540 D Total Suspended Solids Dried at 103105C42540 E Fixed and Volatile Solids Ignited at
11、550C43.Terminology3.1 Definitions of terms in this test method appear inTerminology D883.4.Summary of Test Method4.1 This test method consists of the following:4.1.1 Selecting a compost sample for the determination ofthe stability.4.1.2 Producing a fully stabilized compost from a similarwaste stream
12、 under well-controlled laboratory conditions.4.1.3 Exposing the compost test samples to the fully stabi-lized compost under controlled composting conditions.1This test method is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.03 on
13、 Treatment,Recovery and Reuse.Current edition approved Jan.1,2010.Published January 2010.Originallyapproved in 1996.Last previous edition approved in 2004 as D597596(2004).DOI:10.1520/D5975-96R10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at se
14、rviceastm.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.4“Standard Methods for the Examination of Water and Wastewater,”17thEdition,1989,Ameri
15、can Public Health Association,1740 Broadway,NewYork,NY19919.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.1.4 Measuring the oxygen consumption rate and deter-mining the cumulative oxygen consumption.4.2 Obtaining the level of stabilit
16、y from the cumulativeoxygen consumption.5.Significance and Use5.1 A measurement of compost stability is needed forseveral reasons.It aids in assessing whether the compostingprocess has proceeded sufficiently far to allow the finishedcompost to be used for its intended application.A differentcompost stability may be required for different applications ofthe compost.5.2 A measurement of compost stability also is needed toverify whether a composting plant is processing the waste topreviously agreed
