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GB/T 16881-2008: Coagulation -- Deposition jar test of water
Status: Valid GB/T 16881: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16881-2008 | English | 139 |
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3 days [Need to translate]
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Coagulation -- Deposition jar test of water
| Valid |
GB/T 16881-2008
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| GB/T 16881-1997 | English | 279 |
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3 days [Need to translate]
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Coagulation--Flocculation jar test of water
| Obsolete |
GB/T 16881-1997
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PDF similar to GB/T 16881-2008
Basic data | Standard ID | GB/T 16881-2008 (GB/T16881-2008) | | Description (Translated English) | Coagulation -- Deposition jar test of water | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G76 | | Classification of International Standard | 71.100.40 | | Word Count Estimation | 6,683 | | Date of Issue | 2008-06-04 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | GB/T 16881-1997 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.9 (Total No.122) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the water coagulation, precipitation test device test cup tests, operating conditions and operating procedures. This standard applies to determine the water coagulation, process parameters precipitation process, including: coagulant, kind of flocculant, usage, pH of the water, temperature, and various pharmaceutical dosage order and so on. | GB/T 16881-2008: Coagulation -- Deposition jar test of water---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.
Coagulation.Deposition jar test of water
ICS 71.100.40
G76
National Standards of People's Republic of China
Replacing GB/T 16881-1997
Water coagulation, sedimentation test cup test method
Posted 2008-06-04
2008-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 16881-1997 "coagulation, flocculation jar test of water."
This standard and GB/T 16881-1997 compared to the main changes are as follows.
--- The standard name was changed to "water coagulation, sedimentation test cup test method";
--- This standard adds support for high speed gradient (G value) test requirements.
The standard proposed by the People's Republic of China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee of Chemical Water Treatment Chemicals Branch (SAC/TC63/SC5) centralized.
This standard is drafted by. Guangming Chemical Research and Design Institute, Tongji University, Tianjin Chemical Engineering Research and Design Institute.
The main drafters of this standard. Abolished Guoxi Min, Guo Fengxiang, Li Fengting, Bai Ying.
This standard was first published in 1997.
Water coagulation, sedimentation test cup test method
1 Scope
This standard specifies the water coagulation, sedimentation test sample cup test apparatus, operating conditions and operating procedures.
This standard applies to determine the water coagulation, sedimentation process parameters, including. coagulants, flocculants species, the amount of water pH
Value, temperature, and various drug dosing sequence and so on.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 605 chemical reagent Chroma General method (GB/T 605-2006ISO 6353-1. 1982, NEQ)
GB/T 5750 drinking water standards test
GB/T 9724 General rule for determination of pH chemical reagent (GB/T 9724-2007, ISO 6353-1. 1982, NEQ)
GB/T 15724.1 laboratory glassware beaker (GB/T 15724.1-1995, ISO 3819. 1985, NEQ)
3 Method summary
Water coagulation, sedimentation cuvette tests include rapid stirring, stirring slowly and still subsidence three steps. Dosing of coagulant, flocculant
After rapid stirring rapidly dispersed particles in contact with the water samples, particles started to gather produce micro floc. By slow stirring, into a micro floc
Step into contact with each other to grow into larger particles. After the stirring was stopped, the formation of micelle aggregate by gravity settling to the bottom of the container.
By measuring water samples after the test turbidity, color, you can determine the coagulant properties.
4 device
Over 4.1 United stirrer
Speed can be infinitely adjusted between 20r/min ~ 150r/min. Stirring blades made of lightweight corrosion-resistant material, paddle size
60mm × 40mm × 2mm, a rectangular shape. In front of the base or the inside of the multi-joint stirrer illumination device, it can be observed by
Flakes formation. Multi-joint stirrer and paddle sizes, submerged position diagram shown in Figure 1.
1 stirring paddle size and location of the schematic
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