GB/T 7701.2-2008 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 7701.2-2008 | English | 140 |
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Granular activated carbon from coal -- Granular activated carbon from coal for water treatment
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| GB/T 7701.2-1997 | English | 199 |
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Granular activated carbon from coal for solvent recovery
| Obsolete |
| GB/T 7701.2-1987 | English | RFQ |
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Granular activated carbon from coal for solvent recovery
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GB/T 7701.2-2008: Granular activated carbon from coal -- Granular activated carbon from coal for water treatment
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT7701.2-2008
GB
ICS 75.160.10
D 24
NATIONAL STANDARD
Replacing GB/T 7701.4-1997
Granular activated carbon from coal — Granular
activated carbon from coal for water treatment
Issued on. NOVEMBER 20, 2008
Implemented on. MAY 01, 2009
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Requirements... 6
4 Inspection rules... 6
5 Inspection methods... 9
6 Mark, package, transportation, storage... 10
Annex A (Normative) Measurement of humic acid absorption... 11
Annex B (Normative) Measurement of tannin acid absorption... 15
Annex C (Normative) Measurement of water soluble substance... 19
Foreword
GB/T 7701 Granular activated carbon from coal is divided into.
— Part 1.Granular activated carbon from coal for gas phase;
— Part 2.Granular activated carbon from coal for water treatment;
— Part 3.Granular activated carbon from coal for carrier.
This part is the Part 2 of GB/T 7701.Annex C modifies and adopts ASTM D 5029-1998
Standard test method for water soluble content in activated carbon (re-confirmed in 2004). The
main changes are as follows.
— Delete safety term in the Scope;
— Delete sections Quoted references, Terminology, Test method introduction,
Meaning and use, and Keywords;
— Delete the examples in result calculation;
— Delete the repeatability requirement in section Precision and deviation.
This part shall replace GB/T 7701.4-1997 Granular activated carbon from coal for water
treatment. The main changes are as follows.
— Delete quality classification;
— Formulate indicators for water soluble substance;
— Adsorption of methylene blue in ex-factory inspection items is changed from
“inspection item” to “item to be agreed by supplier and purchaser”;
— Iodine value is changed to ≥ 800 mg/g;
— Delete indicator of ash content;
— it no longer stipulates specific technical indicators for pore volume and specific
surface area;
— Add measurement of humic acid adsorption in Annex A;
— Add measurement of tannin acid adsorption in Annex B;
— Add measurement of water soluble substance in Annex C.
Annexes A, B and C are normative.
This part was proposed by and shall be administrated by China Weapon Industry Group
Corporation.
Drafting organization of this part. Shanxi Xinhua Chemical Co., Ltd.
The main drafters of this part. Zhang Xu, Pang Huisheng, Li Huaizhu, Li Weibing, and Wu
Yan.
The previous standards replaced by this part are as follows.
- GB/T 7701.4-1987;
- GB/T 7701.4-1997.
Granular activated carbon from coal
Granular activated carbon from coal for water treatment
1 Scope
This part specifies the requirements, inspection rules, test methods, mark, package,
transportation, and storage etc. for granular activated carbon from coal for water
treatment.
This part is applicable to dechlorination, oil removal and purification for industrial water;
further purification treatment for drinking water and sewage; and granular activated
carbon from coal for water treatment when water source are outbreak-polluted.
2 Normative references
The articles contained in the following documents have become this part of GB/T 7701
when they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrigendum) or revisions made thereafter shall not be applicable to this
Standard. For the undated documents so quoted, the latest editions shall be applicable to
this Standard.
GB/T 1914 Chemical analytical filter paper
GB/T 6682 Water for analytical laboratory use - Specification and test methods
(GB/T 6682-2008, ISO 3696.1987, MOD)
GB/T 7701.1-2008 Granular activated carbon from coal - Granular activated carbon
from coal for gas adsorption
GB/T 7702.1 Determination of moisture in granular activated carbon from coal
GB/T 7702.2 Standard test method for particle size distribution of granular activated
carbon from coal
GB/T 7702.3 Test method for granular activated carbon from coal - Determination of
hardness
GB/T 7702.4 Standard test method for packing density of granular activated carbon
from coal
GB/T 7702.6 Test method for granular activated carbon from coal—Determination of
methylene blue adsoption
GB/T 7702.7 Test method for granular activated carbon from coal - Determination of
iodine number
3 Requirements
3.1 Appearance
It shall be the carbon material in dark black, and in granular.
3.2 Impurities
Activated carbon must not contain poisonous and harmful substances which can affect
human health.
3.3 Technical indicators
The technical indicators of granular activated carbon from coal for water treatment shall
comply with the requirements in Table 1.
4 Inspection rules
4.1 Inspection classification
Product inspection is divided into type testing and ex-factory inspection.
4.2 Type inspection
4.2.1 Inspection items
Inspection items are shown in Table 2.
4.2.3 Sampling
It shall accord with rules in 4.2.3 of GB/T 7701.1-2008.
4.2.4 Determined rule
It shall accord with rules in 4.2.4 of GB/T 7701.1-2008.
4.3 Ex-factory inspection
4.3.1 Quality assurance
The manufacturer shall guarantee that all products delivered shall meet the requirements
of this standard. The products shall be inspected by Quality Inspection Department of the
manufacturer. Each batch of products delivered shall be attached with quality certificate as
stipulated.
4.3.5 Determined rule
It shall accord with rules in 4.2.5 of GB/T 7701.1-2008.
5 Inspection methods
5.1 Appearance inspection
It shall adopts visual method.
5.2 Measurement of pore volume
The measurement of pore volume shall accord with GB/T 7702.20.
5.8 Measurement of pH value
The measurement of pH value shall accord with GB/T 7702.16.
5.9 Measurement of iodine absorption
The measurement of iodine absorption shall accord with GB/T 7702.7.
5.10 Measurement of methylene blue absorption
The measurement of methylene blue absorption shall accord with GB/T 7702.6.
5.11 Measurement of phenol absorption
The measurement of phenol absorption shall accord with GB/T 7702.8.
5.12 Measurement of humic acid absorption
The measurement of humic acid absorption shall accord with Annex A.
6 Mark, package, transportation, storage
It shall accord with Chapter 6 of GB/T 7701.1-2008.
Annex A
(Normative)
Measurement of humic acid absorption
A.1 Scope
This Annex specifies the instruments needed to measure humic acid absorption, analysis
procedures, calculation results, and other contents for granular activated carbon from coal
for water treatment.
This Annex is applicable to measurement of humic acid absorption of granular activated
carbon from coal for water treatment.
A.2 Principle
A certain volume of humic acid solution goes through activated carbon layer. Measure the
variation in concentration of humic acid solution. And obtain the milligram number of
specimen absorption humic acid in each gram of sample.
A.3 specimen and material
A.3.1 Water. GB/T 6682, grade III.
A.3.2 Sodium borate. Analytical pure.
A.3.3 Sodium borate buffer solution. pH=9.18.Weigh 3.80 g of sodium
borate(Na2B4O7·10H2O) to dissolve in water. Dilute to 1 L.
A.3.4 Humic acid. Biochemical reagent.
A.3.5 20 mg/L of humic acid solution
Accurately weigh 20 mg (accurate to 0.1 mg) of humic acid. Dissolve in buffer solution.
Dilute to 1000 mL.
A.4 Instruments and equipment
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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