1.1 本试验方法包括使用合成进料溶液测定连续电去离子（CEDI）装置的操作特性，不一定适用于天然水。本试验方法适用于电导率范围约为50 μS/cm至1000 μS/cm。 1.2 本测试方法涵盖了在CEDI设备的标准测试条件下的操作特性的确定，其中电活性转移介质主要是未生成的。 这导致比进行要求活性介质主要再生的测试时更快地达到稳定状态和更短的测试时间。 1.3 该试验方法不一定表明以下情况: 1.3.1 对含有污垢或微溶溶质或两者的给水的长期性能， 1.3.2 半咸水、海水或其他高盐度饲料的性能， 1.3.3 合成工业饲料溶液、药品或食品和饮料加工溶液的性能，或， 1.3.4 给水性能低于50 μS/cm，特别是与有机溶质、胶体或颗粒物质或生物或微生物物质有关的性能。 1.4 受前述限制条件的限制，该测试方法可以用作预测给定给水水质的预期去离子性能的辅助手段，也可以用作确定给定装置的性能是否在一段时间内发生变化的测试方法。然而，最终用户有责任确保该测试方法对其特定应用的有效性。 1.5 以国际单位表示的值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《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 CEDI装置可用于从预处理水进料中生产去离子水。该测试方法允许使用标准条件集相对快速地测量CEDI设备的关键性能能力。可以分析所获得的数据，以提供关于装置的运行特性是否可能发生变化的信息，而与给水特性或运行条件的任何变化无关。在特定情况下，该测试方法还可以为工厂设计提供足够的信息。

1.1 This test method covers the determination of the operating characteristics of continuous electrodeionization (CEDI) devices using synthetic feed solutions and is not necessarily applicable to natural waters. This test method is a procedure applicable to solutions with a conductivity range from approximately 50 μS/cm to 1000 μS/cm. 1.2 This test method covers the determination of operating characteristics under standard test conditions of CEDI devices where the electrically active transfer media therein is predominantly unregenerated. This results in more rapid achievement of steady state and shorter test time than when performing a test which requires the active media be predominantly regenerated. 1.3 This test method is not necessarily indicative of the following: 1.3.1 Long-term performance on feed waters containing foulants or sparingly soluble solutes, or both, 1.3.2 Performance on feeds of brackish water, sea water, or other high-salinity feeds, 1.3.3 Performance on synthetic industrial feed solutions, pharmaceuticals, or process solutions of foods and beverages, or, 1.3.4 Performance on feed waters less than 50 μS/cm, particularly performance relating to organic solutes, colloidal or particulate matter, or biological or microbial matter. 1.4 This test method, subject to the limitations previously described, can be applied as either an aid to predict expected deionization performance for a given feed water quality, or as a test method to determine whether performance of a given device has changed over some period of time. It is ultimately, however, the user's responsibility to ensure the validity of this test method for their specific applications. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 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 The CEDI devices can be used to produce deionized water from feeds of pretreated water. This test method permits the relatively rapid measurement of key performance capabilities of CEDI devices using standard sets of conditions. The data obtained can be analyzed to provide information on whether changes may have occurred in operating characteristics of the device independently of any variability in feed water characteristics or operating conditions. Under specific circumstances, this test method may also provide sufficient information for plant design.