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现行 ASTM D7903-14(2020)
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Standard Practice for Determining the Capacity of Oxygen Removal Ion Exchange Cartridges 确定除氧离子交换膜的容量的标准实践
发布日期: 2020-11-01
1.1 本规程包括测定再生形式的除氧离子交换树脂滤芯在用于去除水中溶解氧时的性能。该测试可用于确定未使用墨盒的初始容量或已使用墨盒的剩余容量。在这种情况下,性能被定义为到定义终点的除氧能力(或吞吐量)。 1.2 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。 1.3 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。 1.4 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 本规程可用于评估未使用的除氧离子交换盒是否符合规范。 5.2 本规程规定了根据处理至溶解氧终点水平的水量计算容量。 5.3 书面实践假设滤芯中的除氧离子交换树脂部分或完全再生。 树脂再生不是本实践的一部分。 5.4 本规程规定了以药筒为基础的容量计算。 5.5 本规程可用于测试不同尺寸的除氧树脂滤芯。改变试验水的流速和取样频率,以补偿试验筒中树脂的近似体积。
1.1 This practice covers the determination of the performance of oxygen removal ion exchange resin cartridges in the regenerated form when used for removing dissolved oxygen from water. The test can be used to determine the initial capacity of unused cartridges or the remaining capacity of used cartridges. In this case, performance is defined as oxygen removal capacity (or throughput) to a defined endpoint. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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 This practice can be used to evaluate unused oxygen removal ion exchange cartridges for conformance to specifications. 5.2 This practice provides for the calculation of capacity in terms of the volume of water treated to an end point level of dissolved oxygen. 5.3 The practice as written assumes that the oxygen removal ion exchange resins in the cartridge are either partially or fully regenerated. Regeneration of the resins is not part of this practice. 5.4 This practice provides for the calculation of capacity on a cartridge basis. 5.5 This practice may be used to test different size oxygen removal resin cartridges. The flow rate of test water and the frequency of sampling are varied to compensate for the approximate volume of resin in the test cartridge.
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归口单位: D19.08
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