1.1 本试验方法包括测定连续电去离子（CEDI）装置的运行特性，当装置用于从反渗透系统的产品水生产高度去离子水时，指示去离子性能。本试验方法适用于含有碳酸或溶解二氧化硅或二者的给水和其他溶质，电导率范围约为2至100微西门斯厘米 -1 . 1.2 本试验方法包括在CEDI装置的标准试验条件下测定其工作特性，其中电活性转移介质主要是再生的。 1.3 本试验方法不一定表明: 1.3.1 在含有污染物或难溶溶质或两者的给水上的长期性能； 1.3.2 在微咸水、海水或其他高盐度饲料上的表现； 1.3.3 在食品和饮料的合成工业饲料溶液、药品或工艺溶液方面的表现；或 1.3.4 在低于2μS/cm的给水上的性能，尤其是与有机溶质、胶体或颗粒物质或生物或微生物物质有关的性能。 1.4 根据所述限制，本试验方法可用于预测给定给水质量的预期去离子性能，或用于确定给定装置的性能是否在一段时间内发生变化。然而，最终用户有责任确保该测试方法在其特定应用中的有效性。 1.5 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。 1.6 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。 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 CEDI装置可用于从预处理水的进料中生产去离子水。该测试方法允许使用一组标准条件测量CEDI设备的关键性能。可以对获得的数据进行分析，以提供有关装置的运行特性是否发生变化的信息，而与给水特性或运行条件的任何变化无关。 在特定情况下，该试验方法也可为电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, indicative of deionization performance when a device is applied to production of highly deionized water from the product water of a reverse osmosis system. This test method is a procedure applicable to feed waters containing carbonic acid or dissolved silica, or both, and other solutes, with a conductivity range of approximately 2 to 100 microsiemens-cm -1 . 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 regenerated. 1.3 This test method is not necessarily indicative of: 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 2 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 described, can be applied as either an aid to predict expected deionization performance for a given feed water quality, or as a 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 CEDI devices can be used to produce deionized water from feeds of pretreated water. This test method permits the measurement of key performance capabilities of CEDI devices using a standard set 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.