Standard No.:	CJ/T 264-2007
English Name:	Membrane fine bubble diffuser for water and wastewater treatment
Chinese Name:	水处理用橡胶膜微孔曝气器
Chinese Classification:	P40    Water supply and draining engineering in general
Professional Classification:	CJ    Professional Standard - Urban Construction
ICS Classification:	91.140.60 91.140.60    Water supply systems 91.140.60
Source Content Issued by:	MOHURD
Issued on:	2007-8-20
Implemented on:	2008-1-1
Status:	superseded
Superseded by:	CJ/T 264-2018 Membrane fine bubble diffuser for water and wastewater treatment
Superseded on:	2018-11-1
Superseding:	CJ/T 3015.4-1996 Openable middle and fine bubble diffuser for wastewater treatment
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	170.0
Delivery:	via email in 1 business day

1 Scope This standard specifies terms and definitions, product classification, models, requirements, test methods, inspection rules, marking, packing, transportation and storage and quality assurance of disc type, tube type and plate type membrane fine bubble diffuser. This standard is applicable to biological sewage treatment, source water pretreatment, water quality protection of watercourse and oxygenization of other water bodies. 2 Normative References The provisions of the following normative documents become part of this standard after being quoted. The provisions in the following became those of this Standard by the reference of the Standard. The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent modification to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard. For undated normative reference, the latest edition of the normative document is applicable to this standard.

Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Product Classification and Type 5 Requirement 6 Test Methods 7 Inspection Rules 8 Marking, Packaging, Transport and Storage 9 Quality Assurance Appendix A (Normative) Calculating the Total Transfer Coefficient of Dissolved Oxygen in Clear Water with Nonlinear Regression Method Appendix B (Normative) Resistance Loss Determination of Membrane Fine Bubble Diffuser Appendix C (Informative) Requirements of Pool Floor Aerating System of the Membrane Fine Bubble Diffuser