GB/T 25279-2022Hollow fiber flat-plat membrane module (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 25279-2010 "Hollow Fiber Curtain Membrane Modules". Compared with GB/T 25279-2010, except for structural adjustment In addition to editorial changes, the main technical changes are as follows.

---Added the terms "hollow fiber membrane", "membrane module integrity", "turbidity", "internal pressure test", "silt density index", "self-supporting membrane", "increase "Strongly Supported Membrane" (see Chapter 3), the expression of the term "hollow fiber curtain membrane module" and "water yield" has been changed (see Chapter 3,.2010 Chapter 3 of the year edition);

--- Changed the expression of "model composition" (see 4.2, 4.2.1 of the.2010 edition);

--- Changed the expression of "appearance" (see 5.1, 5.1 of the.2010 edition);

--- Added "Material" requirements (see 5.2);

--- Change "outline dimensions" to "membrane module outline" and "dimension deviation" (see 5.3, 5.2 of the.2010 edition);

--- Changed the requirements for water flux (see 5.5, 5.4 of the.2010 edition);

--- Added the requirement of "water production index" (see 5.6);

--- Changed the description of the appearance test method (see 6.1, 6.1 of the.2010 edition);

--- Changed the description of the external dimension test method (see 6.2, 6.2 of the.2010 edition);

--- Changed the description of the integrity test steps (see 6.3.2, 6.3.2 of the.2010 edition);

--- Changed the content of water flux "test steps" (see 6.4.2, 6.4.2 of the.2010 edition);

--- Added "test device" and "test procedure" for "water production index" (see 6.5);

--- Added "inspection classification" (see 7.1);

--- Changed the factory inspection items and methods (see 7.2.1, 7.1.1 of the.2010 edition);

--- Changed the type inspection items and methods (see 7.3.2, 7.2.2 of the.2010 edition).

1 Scope

This document specifies the classification and nomenclature, technical requirements, test methods, inspection rules, marking, packaging, transportation of hollow fiber curtain membrane modules and storage.

This document applies to the production, scientific research, use and management of hollow fiber curtain membrane modules (hereinafter referred to as membrane modules).

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 191 Graphical signs of packaging, storage and transportation

GB/T 2828.1 Counting Sampling Inspection Procedure Part 1: Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)

GB/T 2829 Periodic Inspection Counting Sampling Procedure and Table (Applicable to Inspection of Process Stability)

GB/T 4456 Polyethylene blown film for packaging

GB 5749 Hygienic Standard for Drinking Water

GB/T 5750.12 Standard Test Methods for Drinking Water, Microbial Indicators

GB/T 9174 General technical conditions for general cargo transport packaging

GB/T 9969 General Principles of Instruction Manual for Industrial Products

GB/T 14436 General Principles of Warranty Documents for Industrial Products

GB/T 15893.1-2014 Determination of turbidity in industrial circulating cooling water by scattered light method

GB/T 17219 Safety Evaluation Standard for Drinking Water Transmission and Distribution Equipment and Protective Materials

GB/T 20103-2006 Membrane separation technical terms

GB/T 36137-2018 Hollow fiber ultrafiltration membrane and microfiltration membrane module integrity test method

CJ/T 530-2018 Submerged hollow fiber ultrafiltration membrane modules and devices for drinking water treatment

DL/T 588-2015 Determination of water pollution index

3 Terms and Definitions

GB/T 20103-2006, GB/T 36137-2018, CJ/T 530-2018 and the following terms and definitions apply to this document.