【国外标准】 Standard Practice for Evaluating the Kinetic Behavior of Ion Exchange Resins
本网站 发布时间:
2024-02-28
开通会员免费在线看70000余条国内标准,赠送文本下载次数,单本最低仅合13.3元!还可享标准出版进度查询、定制跟踪推送、标准查新等超多特权!  
查看详情>>
标准简介
适用范围:
5.1 This practice is intended to evaluate changes in the performance of ion exchange resins used in mixed beds operating as polishing systems for solutions of low ionic strength, typically, <10 mg/L dissolved solids, that are intended to produce very high purity effluents. It is recommended that when new resins are installed in a plant it be used to provide a base line against which the future performance of that resin can be judged.5.2 The conditions of this test must be limiting kinetically, such that kinetic leakage, and not equilibrium leakage, is tested. This leakage is influenced by a combination of influent flow velocity and concentration, as well as bed depth.5.3 It is recommended that the practice be followed with the resin ratio, flow rate, and influent quality as indicated. The design of the apparatus permits other variations to be used that may be more appropriate to the chemicals used in a specific plant and the nature of its cooling water, but the cautions and limitations noted in the practice must be accommodated.5.4 It is possible that the cation resin could experience kinetics problems. In many cases, however, the anion resins are more likely to experience the types of degradation or fouling that could lead to impaired kinetics. Testing of field anion and cation resins together is an option, especially when historic data on the mixed bed will be compiled. Recognize, however, that many variables can be introduced, making it difficult to interpret results or to compare to historical or new resin data on separate components.5.5 Provision is made for calculation of the mass transfer coefficient in the Appendix X1. When such calculation is to be made, a full wet sieve analysis, as described in Test Methods D2187, also is required. Electronic particle sizing may be substituted if it is referenced back to the wet sieve method.5.6 This practice is intended to supplement, not displace, other indicators of resin performance, such as exchange capacity, percent regeneration, and service experience records.1.1 This practice is intended to evaluate changes in kinetic performance of ion exchange resins used in mixed beds to produce high purity water. Within strict limitations, it also may be used for comparing resin of different types. This standard does not seek to mimic actual operating conditions. Specific challenge solutions and conditions are specified. At the option of the user, other conditions may be tested.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 the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health 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.
标准号:
ASTM D6302-98(2017)
标准名称:
Standard Practice for Evaluating the Kinetic Behavior of Ion Exchange Resins
英文名称:
Standard Practice for Evaluating the Kinetic Behavior of Ion Exchange Resins标准状态:
Active-
发布日期:
-
实施日期:
出版语种:
- 推荐标准
- 国家标准计划
- BS EN IEC 61753-071-02:2020+A1:2024 Fibre optic interconnecting devices and passive components. Performance standard
- 24/30492859 DC BS EN IEC 61753-1 Fibre optic interconnecting devices and passive components - Performance standard
- 24/30491443 DC standard
- 24/30489392 DC BS EN IEC 62358 Ferrite cores. Standard inductance factor for gapped cores and its tolerance
- BS ISO 19848:2024 - TC Tracked Changes. Ships and marine technology. Standard data for shipboard machinery and equipment
- BS ISO 19848:2024 Ships and marine technology. Standard data for shipboard machinery and equipment
- BS IEC 61360-7:2024 Standard data element types with associated classification scheme
- 24/30487130 DC BS EN 50566:2017/A2:2024 Product standard to demonstrate the compliance of wireless communication
- 24/30486472 DC - Product standard
- KS M ISO 4259-4 석유 및 관련 제품 — 측정 방법과 결과의 정밀도 — 제4부: 개별 실험실에서 표준 시험방법의 실행에 대한 ‘통계적 관리’ 상태를 확인하기 위한 통계적 관리도의 사용
- KS C IEC 61340-4-6 정전기학 — 제4-6부: 구체적 적용 분야에 대한 표준 시험방법 — 손목접지대
- KS C IEC 61340-4-7 정전기학 — 제4-7부: 구체적 적용 분야에 대한 표준 시험방법 — 이온화
- KS C IEC 61340-4-8 정전기학 — 제4-8부: 구체적 적용 분야에 대한 표준 시험방법 — ESD 차폐성 — 봉투
- 24/30485973 DC standard
- BS EN 14662-1:2023 - TC Tracked Changes. Ambient air quality. Standard method for measurement of benzene concentrations