GB/T 39221-2020Determination for performance of scale inhibitors for reverse osmosis seawater desalination—Recurrent condensation cycle test method (English PDF)
反渗透海水淡化阻垢剂阻垢性能试验 周期浓缩循环法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 11, 2020
Implementation date
May 1, 2021
Scope
GB/T 39221-2020 is the English-translated version of 反渗透海水淡化阻垢剂阻垢性能试验 周期浓缩循环法.
GB/T 39221-2020 is the Chinese standard "Determination for performance of scale inhibitors for reverse osmosis seawater desalination—Recurrent condensation cycle test method".
Its scope clause reads: This standard specifies the principle, test water and reagents, test water and reagents for measuring the scale inhibition performance of reverse osmosis desalination scale inhibitors by the periodic concentration cycle method.
Test equipment, test preparation, test procedures, test data processing and drawing result curves. This standard applies to the determination of the scale inhibition performance of reverse osmosis seawater desalination scale inhibitors by the periodic concentration cycle method. Its clauses include terms and definitions.
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Document preview — GB/T 39221-2020
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- F 41
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Anti-scaling performance
- 3.2 Loop operation
- 3.3 Concentrated operation
- 3.4 Cycle
- 3.5 Cycle enrichment cycle
1 Scope
This standard specifies the principle, test water and reagents, test water and reagents for measuring the scale inhibition performance of reverse osmosis desalination scale inhibitors by the periodic concentration cycle method.
Test equipment, test preparation, test procedures, test data processing and drawing result curves.
This standard applies to the determination of the scale inhibition performance of reverse osmosis seawater desalination scale inhibitors by the periodic concentration cycle method.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 19249 reverse osmosis water treatment equipment
GB/T 23954 Reverse osmosis system membrane element cleaning technical specification
GB/T 33584.1 Seawater cooling water quality requirements and analytical testing methods Part 1.Determination of calcium and magnesium ions
GB/T 33584.3 Seawater cooling water quality requirements and analytical testing methods Part 3.Determination of chloride
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Anti-scaling performance
The agent disperses the poorly soluble inorganic salt in the water and prevents or interferes with the ability of the poorly soluble inorganic salt to precipitate and scale on the metal surface.
3.2 Loop operation
The production water and concentrated water of the membrane module are all returned to the operation mode of the inlet water regulating water tank.
3.3 Concentrated operation
The water produced by the membrane module does not return, and the concentrated water returns to the operation mode of the inlet water regulating tank.
3.4 Cycle
The production water and concentrated water are all returned to the inlet water adjustment tank, and the process runs stably for a certain period of time.
3.5 Cycle enrichment cycle
Cyclic operation-concentration operation is a test cycle. If there is no fouling after operation, enter the next cycle until fouling, and the cycle mode of operation ends.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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