GB/T 7701.2-2008 PDF EnglishUS$140.00 · In stock · Download in 9 seconds
GB/T 7701.2-2008: Granular activated carbon from coal -- Granular activated carbon from coal for water treatment Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 7701.2: Historical versions
Similar standardsGB/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 ContentsForeword... 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... 19ForewordGB/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 treatment1 ScopeThis 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 referencesThe 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 number3 Requirements3.1 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 rules4.1 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 methods5.1 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, storageIt 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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