HJ 2538-2014 (HJ2538-2014)

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HJ 2538-2014	English	369	Add to Cart	3 days [Need to translate]	Technical requirement for environmental protection products Grit removal equipment in grit chamber	HJ 2538-2014	Valid	HJ 2538-2014

HJ 2538-2014
Technical requirement for environmental protection products Grit removal equipment in grit chamber
People's Republic of China National Environmental Protection Standards
Environmental protection product cyclone grit removal device
Technical requirement for environmental protection products
Grit removal equipment in grit chamber
Issued on.2014-06-20
2014-9-1 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Preface ..II
1. Scope .1
2 Normative references ..1
3 Terms and definitions
4 Classification and Nomenclature 1
5 Technical Requirements .2
Performance requirements 6 .3
7 .4 test method
8 .4 inspection rules
9 signs, packaging, transportation and storage .6
Appendix A (informative) cyclone desander device mounting structure and general requirements ..7
Foreword
To implement the "People's Republic of China Environmental Protection Law", to ensure product quality and cyclone grit removal device, development of this standard.
This standard specifies the technical requirements cyclone desander devices, test methods, inspection rules, marking, packaging, transportation and storage
Deposit and other requirements.
This standard is the first release.
This standard is developed by the Ministry of Environmental Protection Science, Technology organization.
This standard drafting units. China Environmental Protection Industry Association (Water Pollution Control Commission), Jiangsu Tianyu Environmental Group
Ltd., Spring Creek Yixing Environmental Protection Equipment Co., Ltd., Jiangsu prosperous Environmental Engineering Technology Co., Ltd.
This standard MEP June 20, 2014 for approval.
This standard since September 1, 2014 implementation.
The standard explanation by the Ministry of Environmental Protection.
Environmental protection product cyclone grit removal device
1 Scope
This standard specifies the technical requirements cyclone desander devices, test methods, inspection rules, marking, packaging, transportation and storage.
This standard applies to urban sewage treatment works, industrial waste water treatment works in cyclone desander devices.
2 Normative references
The standard content of the following documents cited in the articles. For undated references, the effective version applies to this standard.
GB/T 191 Packaging - Pictorial signs
GB 4208 housing protection (IP Code)
GB/T 4942.1 and the overall structure of the rotary motor protection (IP Code) classification
GB/T 6388 transport package shipping mark
GB 8923 steel surface before painting Rust grades and grade
GB/T 9969 General Instructions industrial products
GB/T 10894 separate mechanical noise test method
GB/T 13306 signs
GB/T 13384 mechanical and electrical products packaging General technical conditions
Determination of GB/T 13452.2 Paints and varnishes thickness
GB/T 18449.1 metallic materials Knoop hardness test Part I. Test methods
JB/T 5943 construction machinery welding parts General technical requirements
JB/T 5994 Assembly General technical requirements
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 cyclone desander device
The use of hydraulic and mechanical power flow control state and the velocity of the stream, and the use of the density difference and solidarity principle, sand sewage sand sedimentation,
Wastewater pretreatment unit separated (hereinafter. Desanding means).
3.2 equivalent diameter
Diameter and a sand volume of spherical particles of the same shall be the equivalent sand grain size.
3.3 removal efficiency
Desanding means under certain flow pattern and flow conditions, the unit volume of water equivalent diameter greater than a value proportional to remove grit.
4 Classification and Nomenclature
4.1 Classification
Ranked according to the different ways of sand, grit removal device can be divided into stripping desilting desilting and pumping in two forms, the general mounting structure in the form of Appendix A.
4.2 Naming
Desanding model by means of cyclone desander pinyin abbreviation (XCS), desil