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1、BRITISH STANDARD BS EN 12907:2003 Products used for the treatment of water intended for human consumption Pyrolyzed coal material The European Standard EN 12907:2003 has the status of a British Standard ICS 71.100.80 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, U
2、ncontrolled Copy, (c) BSI BS EN 12907:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 31 July 2003 BSI 31 July 2003 ISBN 0 580 42367 0 National foreword This British Standard is the official English language version of EN 12907:2003. It
3、 supersedes BS EN 12907:1999 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secre
4、tary. Additional information Article 10 of the Council of the European Community Directive 98/83/EC on the quality of water intended for human consumption requires Member States to ensure that substances and materials (including associated impurities) used in the preparation of drinking water do not
5、 remain in treated water at concentrations that are higher than necessary or that would reduce the protection of public health provided for in the Directive. This requirement is given effect in England and Wales by regulation 25 of the Water Supply (Water Quality) Regulations 1989 (similar provision
6、s apply in Scotland and Northern Ireland). Regulation 25 makes provision for attaching conditions of use to chemicals and filter media that are authorized for use in public water supplies. Details of conditions of use are contained in the List of Products and Processes Approved Under Regulations 25
7、and 26 For Use In Connection With The Supply of Water For Drinking, Washing, Cooking and Food Production Purposes published by the Drinking Water Inspectorate, Floor 2/A1, Ashdown House, 123 Victoria Street, London SW1 6DE (www.dwi.gov.uk). Cross-references The British Standards which implement inte
8、rnational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not pur
9、port to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committ
10、ee 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. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14,
11、 an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BS
12、I EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12907 April 2003 ICS 71.100.80Supersedes EN 12907:1999 English version Products used for treatment of water intended for human consumption - Pyrolyzed coal material Produits utiliss pour le traitement de leau destine la consommation humaine - Ch
13、arbon pyrolis Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Thermisch behandelte Kohleprodukte This European Standard was approved by CEN on 20 February 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thi
14、s European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (Eng
15、lish, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Repub
16、lic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management
17、 Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12907:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003
18、(E) 2 Contents page Foreword3 Introduction.4 1Scope 5 2Normative references 5 3Terms and definitions5 4Description .5 4.1Identification.5 4.2Commercial forms .5 5Physical properties5 5.1Appearance.5 5.2Particle size distribution .6 5.3Density6 6Chemical properties 6 6.1Composition of commercial prod
19、uct.6 6.2Purity criteria7 7Specific properties.7 8Test methods8 8.1Sampling.8 8.2Analysis 8 9Labelling, transportation and storage .8 9.1Means of delivery.8 9.2Risk and safety labelling in accordance with EU Directives.8 9.3Transportation regulations and labelling9 9.4Marking .9 9.5Storage9 Annex A
20、(informative) General information on pyrolyzed coal material10 A.1Origin.10 A.2Properties .10 A.3Use.11 A.4Hydraulic characteristics12 A.5Rules for safe handling and use.12 A.6Emergency procedures.12 Bibliography14 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncon
21、trolled Copy, (c) BSI EN 12907:2003 (E) 3 Foreword This document (EN 12907:2003) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identic
22、al text or by endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latest by October 2003. This document supersedes EN 12907:1999. NOTE Conformity with this standard does not confer or imply acceptance or approval of the product in any of the Membe
23、r States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. Significant technical differences between this edition and EN 12907:1999 are as follows: a) deletion of reference to EU Directive 80/778/EEC of 15 July 19
24、80; b) addition in A.2.1 of an explanation of the difference between metals concentrations found in the test and those that occur in practice. Annex A is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
25、ment this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat O
26、ct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this European Standard: a) this European Standard provides no information as to
27、whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. Lic
28、ensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003 (E) 5 1 Scope This European Standard is applicable to pyrolyzed coal material used for treatment of water intended for human consumption. It describes the characteristics of pyrolyze
29、d coal material and specifies the requirements and the corresponding test methods for pyrolyzed coal material. 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 norma
30、tive references are cited at the appropriate places in the text and the publications 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 refer
31、ences the latest edition of the publication referred to applies (including amendments). EN 12901:1999, Products 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 c
32、onsumption - Inorganic supporting and filtering materials - Methods of test. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Carbon (C). 4.1.2 Synonym or common names None
33、. 4.2 Commercial forms Pyrolyzed coal material according to this standard is a thermally treated coal and is available in different particle size ranges. 5 Physical properties 5.1 Appearance The product is a brown to black coloured dull granular material with spherical or angular shape, porous struc
34、ture, and smooth texture. The product shall be generally homogeneous and shall be visibly free of extraneous matter. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003 (E) 6 5.2 Particle size distribution The particle size distrib
35、ution shall be determined on samples taken at the point of manufacture. NOTE 1The particle size can decrease during transportation and handling. The particle size distribution shall be described by either: a) effective size: (d10) with a permitted tolerance of ? 5 %; uniformity coefficient: (U) shal
36、l be less than 1,5; 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 maximum permitted contents of oversize and undersize are 5 % (m/m) for application of the product as a filtration
37、layer in multi-media filters and 10 % (m/m) for use in single media filters. For use as a support layer, maximum contents of oversize and undersize of 15 % (m/m) are acceptable. See A.2.3 for examples of available particle sizes that are used. NOTE 2Other values can be necessary for certain applicat
38、ions. 5.3 Density 5.3.1 Bulk density loose The bulk density loose shall be in the range of 450 kg/m3 to 560 kg/m3. 5.3.2 Bulk density packed The bulk density packed shall be in the range of 460 kg/m3 to 580 kg/m3. 6 Chemical properties 6.1 Composition of commercial product The composition of the com
39、mercial product shall conform to the requirements specified in Table 1. Table 1 Composition of commercial product Parameter% (m/m) content of the commercial product C (water and ash free basis)Min.85 AshMax.15 Volatile matterMax.5 NOTE 1Values of these parameters do not influence filtration properti
40、es but give information about the source of pyrolyzed coal material. NOTE 2Further information is given in A.2.1. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003 (E) 7 6.2 Purity criteria 6.2.1 General This European Standard sp
41、ecifies the minimum purity requirements for pyrolyzed coal material used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so,
42、 this shall be notified to the user and when necessary to relevant authorities. NOTEUsers of this product should satisfy themselves that it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impuri
43、ties and additives used in the products not stated in the product standard, and other relevant factors. Limits have been given for water-extractable substances where these are likely to be present in significant quantities from the current production process and raw materials. If the production proc
44、ess or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 6.2.2 Water-extractable substances The product shall conform to the requirements specified in Table 2. Table 2 Water-extractable substances SubstanceLimit in
45、 g/l in the extraction water Arsenic (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 PAH a max.0,02 a Polycyclic Aromatic Hydrocarbons: the sum of the detected concentrations of fluoranthene
46、, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, benzo(ghi)perylene, indeno(1,2,3-cd)pyrene. 7 Specific properties Pyrolyzed coal material is not an activated carbon but does show adsorption properties. Under defined conditions it removes chlorine and ozone as well as organic matter. Li
47、censed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:42:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12907:2003 (E) 8 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 parti
48、cle size distribution shall be determined in accordance with EN 12902. 8.2.2 Bulk density loose The bulk density loose shall be determined in accordance with EN 12902. 8.2.3 Bulk density packed The bulk density packed shall be determined in accordance with EN 12902. 8.2.4 Content of carbon The conte
49、nt of carbon shall be determined in accordance with EN 12902. 8.2.5 Ash The ash shall be determined in accordance with EN 12902. 8.2.6 Content of volatile matter The content of volatile matter shall be determined in accordance with EN 12902. 8.2.7 Content of water-extractable substances The content of water-extractable substances shall be determined in accordance with the method for granular materials given in EN 12902. 9 Labelling, transportation and storage 9.1 Means of delivery Pyrolyze
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