1.1 本试验方法通过测量试验堆肥在实验室规模的受控堆肥条件下暴露于稳定良好的堆肥后的耗氧量，包括堆肥样品的稳定性，包括主动通风。本试验方法旨在在类似于活性堆肥阶段结束的受控条件下产生可重复和可重复的结果。将堆肥样品暴露于稳定的堆肥接种物中，该接种物由城市固体废物或类似于试验材料来源的废物的有机部分制备。 好氧堆肥发生在温度、通风和湿度受到密切监控和控制的环境中。 1.2 本试验方法得出了四天内样品中每克挥发性固体的累积耗氧量。同时监测耗氧量。 1.3 本试验方法适用于不同类型的堆肥样品，包括来自废物的堆肥，如城市固体废物、庭院废物、源分离有机物、生物固体和其他类型的有机废物，这些有机废物的毒性水平对需氧堆肥系统中存在的微生物没有抑制作用。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 没有类似或等效的ISO方法。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的危险说明 8. . 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 出于几个原因，需要测量堆肥的稳定性。它有助于评估堆肥过程是否进行得足够远，以允许完成的堆肥用于其预期用途。不同的堆肥应用可能需要不同的堆肥稳定性。 5.2 还需要测量堆肥稳定性，以验证堆肥厂是否正在将废物处理到先前商定的稳定性水平。该测量在堆肥厂的调试和验证工厂操作员是否满足许可证要求方面很有用。 5.3 堆肥稳定性水平还将表明，如果在没有通风的情况下储存堆肥，其可能会产生气味，以及堆肥的卫生程度，以及堆肥对新的细菌和可能的致病活性的敏感性。堆肥稳定性是堆肥的植物毒性和植物耐受性的一个重要参数。 5.4 堆肥稳定性的测定将允许选择性能良好的堆肥技术，以及在其各种市场中安全应用堆肥。该方法表明了稳定性的程度，但不一定表明一个级别优于另一个级别的稳定性。

1.1 This test method covers the stability of a compost sample by measuring oxygen consumption after exposure of the test compost to a well-stabilized compost under controlled composting conditions on a laboratory scale involving active aeration. This test method is designed to yield reproducible and repeatable results under controlled conditions that resemble the end of the active composting phase. The compost samples are exposed to a well-stabilized compost inoculum that is prepared from the organic fraction of municipal solid waste or waste similar to the waste from which the test materials are derived. The aerobic composting takes place in an environment where temperature, aeration, and humidity are monitored closely and controlled. 1.2 This test method yields a cumulative amount of oxygen consumed/g of volatile solids in the samples over a four-day period. The rate of oxygen consumption is monitored as well. 1.3 This test method is applicable to different types of compost samples including composts derived from wastes, such as municipal solid waste, yard waste, source-separated organics, biosolids, and other types of organic wastes that do not have toxicity levels that are inhibitory to the microorganisms present in aerobic composting systems. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 There is no similar or equivalent ISO method. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8 . 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 A measurement of compost stability is needed for several reasons. It aids in assessing whether the composting process has proceeded sufficiently far to allow the finished compost to be used for its intended application. A different compost stability may be required for different applications of the compost. 5.2 A measurement of compost stability also is needed to verify whether a composting plant is processing the waste to previously agreed levels of stability. This measurement is useful in the commissioning of composting plants and the verification of whether plant operators are satisfying permit requirements. 5.3 The level of compost stability also will indicate its potential to cause odors if the compost is stored without aeration, as well as the level to which it has been hygienized and how susceptible the compost is to renewed bacterial and possible pathogenic activity. Compost stability is an important parameter with regard to phytotoxicity and plant tolerance of the compost. 5.4 The determination of compost stability will allow the selection of well-performing composting technologies, as well as the safe application of compost in its various markets. The method indicates a degree of stability, but does not necessarily indicate that one level is preferable over another level of stability.