1.范围1。1本标准规定了在城市污水处理厂处理一级澄清池污泥时，用于测定塑料材料暴露在一级厌氧消化池污泥中的厌氧生物降解性的实验室试验方法和条件。塑料材料在环境中的厌氧生物降解性的程度和速率决定了从环境中去除塑料的程度和时间。该方法通过测量塑料暴露在厌氧、市政衍生消化污泥中的气体体积（二氧化碳和甲烷）随时间的变化来确定厌氧生物降解性的程度。1.2本试验方法旨在确定塑料材料在厌氧环境中相对于阳性标准材料的生物降解性。1.3本试验方法适用于不抑制厌氧消化池污水污泥中微生物种群的所有塑料材料。 1.4本标准涉及使用危险化学品和使用潜在有害微生物制剂的程序。本标准并非旨在解决与其使用相关的所有安全问题。使用者有责任在使用前制定适当的安全和健康相关措施以及任何监管限制。第8条给出了具体的危险警告。

1. Scope1.1This Standard specifies the laboratory test method conditions for determining the anaerobic biodegradability of plastic materials on exposure to primary anaerobic digestor sludge obtained from the treatment of primary clarifier sludge at a municipal waste water treatment plant.The degree and rate of anaerobic biodegradability of a plastic material in the environment determines to what extent and in what time period plastic may be eliminated from the environment. The method determines the degree of anaerobic biodegradability by measuring the gas volume evolved (carbon dioxide and methane) as a function of time when the plastic is exposed to anaerobic, municipally derived, digestor sludge.1.2The test method is designed to determine the biodegradability of plastic materials relative to a positive standard material in an anaerobic environment.1.3The test method is designed to be applicable to all plastic materials which do not inhibit the microbial population present in anaerobic digestor sewage sludge.1.4This Standard involves the use of hazardous chemicals and procedures employing potentially harmful microbiological agents. This Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user to establish appropriate safety- and health-related measures and any regulatory limitations prior to use. Specific hazard wa rnings are given in Clause 8.