GB/T 34241-2017Spiral wound composite polyamide reverse osmosis membrane element (English PDF)
卷式聚酰胺复合反渗透膜元件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 7, 2017
Implementation date
April 1, 2018
Scope
GB/T 34241-2017 is the English-translated version of 卷式聚酰胺复合反渗透膜元件.
GB/T 34241-2017 covers the spiral wound composite polyamide reverse osmosis membrane element, which the draft calls the roll polyamide composite reverse osmosis membrane element and shortens to reverse osmosis membrane element.
Clause 1 states that the standard specifies the classification and type, the requirements, the test methods, the inspection rules and the marking, packaging, transportation and storage of these elements.
The same clause says it applies to their production, research, use and management, and adds that other types of reverse osmosis membrane element may follow it as a reference.
Clause 2 cites GB/T 191, GB/T 2828.1, GB/T 6908 and GB/T 9174, a health administration document on the hygiene and safety evaluation of distribution equipment and protective materials for domestic drinking water (Wei Fa Jian Fa [2001] 161), and two further entries, one on the determination of chloride ion in industrial circulating cooling water and boiler water and one on membrane separation technology terminology, whose numbers the draft does not print.
Clause 3 states that the definitions of GB/T 20103-2006 apply and repeats the relevant ones for ease of use: the composite membrane, made from two different membrane materials with a dense surface-active layer that performs the separation and a porous layer that supports it; the reverse osmosis membrane, a semi-permeable membrane that separates solvent from solute by reverse osmosis; the polyamide composite reverse osmosis membrane, whose surface active layer is polyamide; and the feed water channel spacer, the polymer net with a network structure on the feed water side of a roll-type element that guides and disturbs the flow.
The draft stops at the end of that fourth entry, so the requirement, test method and inspection clauses announced in clause 1 are not shown. The standard is administered by the National Standardization Technical Committee on membrane separation (SAC/TC382).
The page declares no replaced edition; it was issued on September 7, 2017 and has applied since April 1, 2018.
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Document preview — GB/T 34241-2017
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- J 77
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions GB/T 20103-2006 defined and the following
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the roll polyamide composite reverse osmosis membrane elements (hereinafter referred to as reverse osmosis membrane element) classification and type, requirements, test side Law, inspection rules, marking, packaging, transportation and storage.
This standard applies to roll polyamide composite reverse osmosis membrane element production, research, use and management, and other types of reverse osmosis membrane element Pieces can refer to the implementation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 Packaging - Pictorial signs
GB/T 2828.1 Sampling procedures for sampling inspection - Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQL)
Determination of conductivity of boiler water and cooling water GB/T 6908
GB/T 9174 general cargo transport packaging general technical conditions
Determination of chloride ion in industrial circulating cooling water and boiler water GB/T
Membrane separation technology terminology
Domestic drinking water distribution equipment and protective materials health and safety evaluation (Wei Fa Jian Fa [2001] 161)
3 Terms and definitions
GB/T 20103-2006 defined and the following terms and definitions apply to this document. For ease of use, the following list is repeated GB/T 20103-2006 related terms and definitions.
3.1 Composite membrane
Two different membrane materials were used to make the surface-active layer (dense layer) with separation function and the porous layer functioning as support Of the film. [GB/T 20103-2006, Definition 2.1.21]
3.2 Reverse osmosis membrane
Semi-permeable membrane for the separation of solvents and solutes from reverse osmosis. [GB/T 20103-2006, Definition 4.1.1]
3.3 Polyamide composite reverse osmosis membrane
Composite reverse osmosis membrane with polyamide as its surface active layer.
3.4 Feed water channel spacer
Roll-type membrane element in the water side of the network has a network structure, from the role of diversion and disturbance of the polymer network.
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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.
Referenced standards
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