GB/T 44626.1-2024 English PDF

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GB/T 44626.1-2024: Fine bubble technology - Elimination method for sample characterization - Part 1: Evaluation procedure
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 44626.1-2024	279	Add to Cart	3 days	Fine bubble technology - Elimination method for sample characterization - Part 1: Evaluation procedure	Valid

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Basic data

Standard ID: GB/T 44626.1-2024 (GB/T44626.1-2024)
Description (Translated English): Fine bubble technology - Elimination method for sample characterization - Part 1: Evaluation procedure
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A21
Classification of International Standard: 19.020
Word Count Estimation: 14,131
Date of Issue: 2024-09-29
Date of Implementation: 2025-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 44626.1-2024: Fine bubble technology - Elimination method for sample characterization - Part 1: Evaluation procedure

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Fine bubble technology - Elimination method for sample characterization - Part 1.Evaluation procedure Elimination of bubbles in samples for micro-bubble characterization Methodology Part 1.Evaluation Procedure Fine bubble technology-Elimination method for sample characterization- (ISO 24261-1.2020, MOD) ICS 19.020 CCS A 21 National Standard of the People's Republic of China Released on 2024-09-29 2025-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface ... Ⅲ Introduction ... Ⅳ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions ... 1 4 Requirements ... 1 4.1 Sample ... 1 4.2 Measuring instruments 2 5 Environment ... 2 6 Evaluation of micro bubble elimination rate ... 2 6.1 General Principles 2 6.2 Elimination rate ... 2 6.3 Confirmation of Pollutant Accumulation 3 6.4 Micro bubble elimination evaluation steps ... 3 7 Test Report ... 3 7.1 Report of test conditions 3 7.2 Reporting of test results ... 4 Appendix A (Informative) Simulation of micro bubble elimination process ... 5 Appendix B (Informative) Concentration reduction caused by elimination of fine bubbles and aggregation 7 References ... 9

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 for standardization documents" Drafting is required. This document is part 1 of GB/T 44626 "Method for eliminating bubbles in samples for characterization of microbubble technology". GB/T 44626 has published the following parts. Part 1.Assessment procedures. - This document is modified to adopt ISO 24261﹘1.2020 "Method for eliminating bubbles in samples for characterization of fine bubble technology Part 1.Evaluation Assessment Procedures. Compared with ISO 24261﹘1.2020, this document has the following structural adjustments. 7.1 corresponds to 7.2 in ISO 24261﹘1.2020; - 7.2 corresponds to 7.1 in ISO 24261﹘1.2020.- The technical differences between this document and ISO 24261﹘1.2020 and their reasons are as follows. The normative reference GB/T 41914.1 replaced ISO 20480﹘1 (see Chapter 3) to adapt to my country's technical conditions and improve Operability; The terms "volume concentration" and "volume concentration index" (see 3.3, 3.4) are added to improve operability; - Added "f) This document number" (see Chapter 7) to improve operability. - The following editorial changes were made to this document. The informative reference GB/T 42843.1-2023 replaces ISO 20298﹘1.2018 (see 3.2), and the informative reference GB/T 6682 replaces Replaced ISO 3696 (see 4.1), replaced ISO /TR 23015.2020 (see 4.2) with GB /Z 44387-2024, GB/T 25915.1 replaces ISO 14644﹘1 (see Chapter 5); Change "elimination efficiency" to "elimination rate" throughout the text; - The unit "million/mL" in Figure A.1 and Figure A.2 is changed to "×106 pieces/mL". - Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Technical Committee for Standardization of Microbubble Technology (SAC/TC 584). This document was drafted by. National Center for Nanoscience and Technology, Anhui Hengyu Environmental Protection Equipment Manufacturing Co., Ltd., Taizhou Juna New Energy Co., Ltd. Company, Shanghai Advanced Research Institute of the Chinese Academy of Sciences, Shanghai Metallographic Environmental Technology Co., Ltd., Nanjing Tianqi Super Oxygen Technology Co., Ltd., Ningbo Hai BO GROUP LIMITED. The main drafters of this document are. Chen Lan, Zhang Xiaoli, Tian Guolan, Wang Xiaoqing, Ding Rong, Zhang Lijuan, Chen Luhai, Zhou Lan, Lan Qingquan, Ge Guanglu, Li Zhaojun, Xia Shaohua.

Introduction

In recent years, micro-bubble technology has made great progress in the fields of cleaning, water treatment, agriculture, forestry, animal husbandry and fishery, and biomedicine. There is a lack of evaluation methods and standards for the effect of micro-bubble generation systems, especially for the number concentration index and particle size index of micro-bubbles. In addition, the fine bubble dispersion may contain other solid particles and droplets. Obviously, considering the influence of these factors It is not possible to directly use particle detection methods to evaluate the characteristics of microbubbles. Therefore, how to eliminate the interference of these factors has become a An urgent problem that needs to be solved. Although there are many methods for detecting particle number concentration index and particle size index, it is effective to distinguish bubbles from other particles in micro-bubble dispersion. There are relatively few ways to remove other particles. An effective solution is to eliminate bubbles by dissolution and buoyancy. If there is a method that can eliminate specific particles, The technology of micro-bubbles in the diameter range can effectively distinguish the micro-bubbles from other solid particles and droplets, so that it is possible to target When most of the fine bubbles are eliminated, the bubble-free solution can be regarded as a blank solution for measurement background. With the continuous progress of micro-bubble elimination technology, it is very necessary to develop standardized bubble elimination technology and corresponding evaluation methods. GB/T 44626 "Method for eliminating bubbles in samples for characterization of microbubble technology" aims to eliminate the microbubbles in microbubble dispersions. The evaluation method of the removal rate is standardized and will be composed of two parts. Part 1.Evaluation procedure. The purpose is to standardize the micro-bubble elimination procedure in micro-bubble dispersions and the elimination rate evaluation criteria. Standardization. Part 2.Microbubble elimination technology. The purpose is to specify the method of eliminating microbubbles in microbubble dispersion and the corresponding Operating procedures. By standardizing the micro-bubble elimination rate, the advantages and disadvantages of several defoaming technologies can be simply and clearly compared, thereby achieving the respective bubble elimination Optimization under technical conditions. Elimination of bubbles in samples for micro-bubble characterization Methodology Part 1.Evaluation Procedure

1 Scope

This document gives a procedure for evaluating the elimination of dispersed fine bubbles in water. This document is applicable to the elimination of unencapsulated microbubbles.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 41914.1 Microbubble technology General rules for the use and measurement of microbubbles Part 1.Terminology (GB/T 41914.1-2022, ISO 20480﹘1.2017, IDT)

3 Terms and definitions

The terms and definitions defined in GB/T 41914.1 and the following apply to this document. The terminology libraries maintained by ISO and IEC for standardization work are as follows. 3.1 Elimination of fine bubbles The process of reducing the fine bubble concentration index. 3.2 fine bubble dispersion; FBD A liquid containing tiny bubbles. [Source. GB/T 42843.1-2023, 3.1] 3.3 volume concentration The volume of the object in the fine bubble dispersion system per unit volume of the medium. Note. The medium is liquid medium. 3.4 Volume concentration index volume concentration index A quantity representing the volume concentration (3.3) of the object in a fine bubble dispersion system measured using a method currently available or recognized by the industry. Note. In actual tests, the microbubble dispersion system usually contains other components with certain functions in addition to microbubbles.

4 Requirements

4.1 Samples The fine bubble dispersion to be evaluated should be a purified bubble generator using pure water and pure gas (such as air, nitrogen and oxygen). ......

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