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1、BRITISH STANDARD BS EN 12915:1999 Products used for treatment of water intended for human consumption Granular activated carbon The European Standard EN 12915:1999 has the status of a British Standard ICS 71.100.80 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncon
2、trolled Copy, (c) BSI BS EN 12915:1999 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 04-2000 ISBN 0 580 35453 9 National f
3、oreword This British Standard is the English language version of EN 12915:1999. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment, which has the responsibility to: aid enquirers to understand the text; present to the responsib
4、le European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secre
5、tary. Additional information Article 8 of the Council of the European Community Directive 80/778/EEC relating to the quality of water intended for human consumption requires Member States to ensure that substances used in the preparation of drinking water do not cause any contravention of the maximu
6、m admissible concentrations prescribed in Annex 1 to the Directive. This requirement is given effect in England and Wales by regulation 25 of the Water Supply (Water Quality) Regulations 1989 (similar provisions apply in Scotland and Northern Ireland). Regulation 25 makes provision for attaching con
7、ditions of use to chemicals and filter media which are authorized for use in public water supplies. Details of conditions of use are contained in the Secretary of States List of Approved Products published by the Drinking Water Inspectorate, Floor 2/A1, Ashdown House, 123 Victoria Street, London SW1
8、E 6DE. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standard
9、s Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages
10、This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the in
11、side front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12915:1999 BSI 04-2000i Contents Page National forewordInside front cover Foreword2 Text of EN 129153 Licensed C
12、opy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12915 August 1999 ICS 71.100.80 En
13、glish version Products used for treatment of water intended for human consumption Granular activated carbon Produits utiliss pour le traitement de leau destine la consommation humaine Charbon actif en grains Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Granulierte-Aktivkohle Thi
14、s European Standard was approved by CEN on 16 July 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical reference
15、s concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into i
16、ts own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spai
17、n, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nat
18、ional Members. Ref. No. EN 12915:1999 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12915:1999 BSI 04-2000 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 164 “Water supply”, the Secretariat of which
19、is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2000, and conflicting national standards shall be withdrawn at the latest by February 2000. According to the CEN/CENELEC
20、Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
21、land and the United Kingdom. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Terms and definitions3 4Description3 4.1Identification3 4.2Commercial forms3 5Physical properties3 5.1Appearance3 5.2Particle size distribution3 5.3Wettability4 5.4Bulk density packed4 5.5Mechanical st
22、rength4 6Chemical properties4 6.1General4 6.2Purity criteria4 7Specific properties5 8Test methods5 8.1Sampling5 8.2Analysis5 9Labelling, transportation and storage8 9.1Means of delivery8 9.2Risk and safety labelling according to the EU directives9 9.3Transportation regulations and labelling9 9.4Mark
23、ing9 9.5Storage9 Annex A (informative) General information on granular activated carbon10 BibliographyInside back cover Figure 1 Bulk density packed test apparatus6 Table 1 Main impurities and by-products4 Table 2 Water-extractable toxic substances4 Table A.1 Total content of toxic substances10 Lice
24、nsed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12915:1999 BSI 04-20003 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: 1) this stand
25、ard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of
26、 this product remain in force. 1 Scope This European Standard is applicable to virgin granular activated carbon used for treatment of water intended for human consumption. It describes the characteristics of granular activated carbon and specifies the requirements and the corresponding test methods
27、for granular activated carbon. It gives information on its use in water treatment. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publicat
28、ions are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 12901, Produ
29、cts used for treatment of water intended for human consumption Inorganic supporting and filtering materials Definitions. EN 12902, Products used for treatment of water intended for human consumption Inorganic supporting and filtering materials Methods of test. 3 Terms and definitions For the purpose
30、 of this standard, the definitions given in EN 12901 and the following definitions apply. 3.1 virgin activated carbon freshly manufactured activated carbon that has not been used and has not been regenerated 3.2 wettability ability of granular activated carbon to be wetted when in contact with water
31、, determined by measuring the quantity of material which sinks in water under specified conditions 4 Description 4.1 Identification 4.1.1 Chemical name(s) Carbon. 4.1.2 Synonym or common names Virgin granular activated carbon, activated coal, activated charcoal, active carbon. 4.1.3 Chemical formula
32、 C (elementary). 4.1.4 CAS Registry Number1) 7440-44-0. 4.1.5 EINECS reference2) 231-153-3. 4.2 Commercial forms Granular activated carbon is a granular product; by convention not less than 90 percent by mass % (m/m) is retained on a 180 4m aperture test sieve (see 5.2). The product can be either sh
33、aped (moulded/extruded) or irregular (non-moulded), and is available in many grades, differing in adsorption characteristics, hardness, porosity, granulometry, shape and purity. 5 Physical properties 5.1 Appearance Black, porous granules of irregular shape or, for moulded or extruded products, in fo
34、rms such as uniform cylinders, pellets or spheres. 5.2 Particle size distribution 5.2.1 General The particle size distribution shall be determined on samples taken at the point of manufacture using the method of test given in EN 12902. The particle size specification shall be within the manufacturer
35、s stated tolerance. NOTE 1Different applications can require different particle size ranges. NOTE 2The particle size can decrease during transportation and handling. 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. Licensed Copy: sheffi
36、eldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12915:1999 4 BSI 04-2000 5.2.2 Irregular (broken) product The particle size distribution shall be described by either: a) effective size, d10, with a permitted tolerance of 5 %; uniformity coefficient, U, which
37、shall be less than 2,1; minimum size, d1, with a permitted tolerance of 5 %; or: b) by particle size range and by mass of oversize and undersize particles according to application. The content of oversize plus undersize shall not exceed 15 % (m/m) and not more than 5 % (m/m) shall be undersize. NOTE
38、Other values can be necessary for certain applications. 5.2.3 Moulded/extruded product Not more than 3 % (m/m) shall pass a test sieve with an aperture size as close as possible to 0,75 times the nominal particle diameter. 5.3 Wettability The wettability shall be greater than 99 % (m/m) when tested
39、according to 8.2.2. 5.4 Bulk density packed The bulk density packed shall be greater than 180 kg/m3 when tested according to 8.2.3. 5.5 Mechanical strength The ball-pan hardness shall be greater than 75 when tested according to 8.2.4. NOTEProducts with a lower hardness are suitable for certain appli
40、cations. 6 Chemical properties 6.1 General Granular activated carbon is manufactured by controlled oxidation (by means of steam or chemicals) from carbonaceous raw materials including coconut, wood, peat or coal. The raw materials shall be stated by the manufacturer. High internal porosity results i
41、n adsorptive properties and, depending on the raw material and the manufacturing process, it can have acid or basic properties. It is a reducing agent with catalytic properties. Activated carbon can react with oxidants to form carbon dioxide. The carbon content of the commercial product does not aff
42、ect adsorption characteristics. 6.2 Purity criteria Limits have been given for impurities and toxic substances where these are likely to be present in significant quantities from the current production process and raw materials. If a change in the production process or raw materials leads to signifi
43、cant quantities of other impurities or by-products being present, this shall be notified to the user. 6.2.1 Impurities and main by-products The product shall conform to the requirements specified in Table 1. Table 1 Main impurities and by-products 6.2.2 Water-extractable toxic substances NOTEFor the
44、 purpose of this standard, “toxic substances” are those defined in the EU Directive 80/778/EEC of July 15, 1980 (see 1). The product shall conform to the requirements specified in Table 2. Table 2 Water-extractable toxic substances ImpurityLimit in % (m/m)a Ash Waterb (at the time of packing)c Water
45、-soluble material Zinc max. max. max. max. 15 5 3 0,002 a Expressed on a dry basis except for water content b Higher or lower values can be necessary for certain applications. c The water content can increase after packing; e.g. during transportation. SubstanceLimit in 4g/l in the extraction water A
46、rsenic (As)max.10 Cadmium (Cd)max.0,5 Chromium (Cr)max.5 Mercury (Hg)max.0,3 Nickel (Ni)max.5 Lead (Pb)max.5 Antimony (Sb)max.3 Selenium (Se)max.3 Cyanide (CN)max.5 PAHamax.0,02 a Polycyclic Aromatic Hydrocarbons: the sum of the detected concentrations of fluoranthene, benzo(b)fluoranthene, benzo(k)
47、fluoranthene, benzo(a)pyrene, benzo(ghi)perylene, indeno(1,2,3-cd)pyrene Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:38:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12915:1999 BSI 04-20005 7 Specific properties The iodine number of the granular activated carbon shall be not less th
48、an 600 mg/g. 8 Test methods 8.1 Sampling Prepare the laboratory sample(s) required by the relevant procedures described in EN 12902. 8.2 Analysis 8.2.1 Particle size distribution The particle size distribution shall be determined in accordance with EN 12902. 8.2.2 Wettability 8.2.2.1 Principle Immer
49、sion of the product in boiling water. Cooling, sedimentation and filtration of the supernatant through a sieve to determine the quantity of material which is not wetted. 8.2.2.2 Reagents All reagents shall be of a recognized analytical grade and the water used shall conform to grade 3 in accordance with EN ISO 3696. 8.2.2.3 Apparatus Ordinary laboratory apparatus and glassware together with the following: 8.2.2.3.1 Drying oven capable of being controlled at (150 5) C. 8.2.2.3.2 Hotplate. 8.2.2.3.3 Wire cloth sieve, with a
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