1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12909:2012Products used for treatmentof water intended for humanconsumption AnthraciteBS EN 12909:2012 BRITISH STANDARDNational forewordThis British Standard is the UK impl
2、ementation of EN 12909:2012. Itsupersedes BS EN 12909:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can beobtained on request to its secretary.Th
3、is publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77576 5ICS 13.060.20; 71.100.80Compliance with a British Standard canno
4、t confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBS EN 12909:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12909 November 20
5、12 ICS 71.100.80 Supersedes EN 12909:2005English Version Products used for treatment of water intended for human consumption - Anthracite Produits utiliss pour le traitement de leau destine la consommation humaine - Anthracite Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Anthr
6、azit This European Standard was approved by CEN on 9 September 2012. 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 bibliographic
7、al references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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
8、of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of M
9、acedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION
10、EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12909:2012: EBS EN 12909:2012EN 12909:2012 (E) 2 Contents Page Foreword 3Introduction . 41 Sco
11、pe 52 Normative references 53 Terms, definitions and symbols . 54 Description . 55 Physical properties 56 Chemical properties 67 Test methods 78 Labelling, transportation and storage . 8Annex A (informative) General information on anthracite . 9Bibliography 13BS EN 12909:2012EN 12909:2012 (E) 3 Fore
12、word This document (EN 12909:2012) 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 identical text or by endorsement, at the latest by Ma
13、y 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent right
14、s. This document supersedes EN 12909:2005. The significant technical difference between this edition and EN 12909:2005 is as follows: Updating of clause 8.2 in line with current legislation. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following coun
15、tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Po
16、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12909:2012EN 12909:2012 (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 Stand
17、ard: a) this European Standard provides no information as to 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 an
18、d/or the characteristics of this product remain in force. NOTE Conformity with this European Standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or con
19、trol by National Authorities. BS EN 12909:2012EN 12909:2012 (E) 5 1 Scope This European Standard is applicable to anthracite used for treatment of water intended for human consumption. It describes the characteristics of anthracite and specifies the requirements and the corresponding test methods fo
20、r anthracite. It gives information on its use in water treatment. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references,
21、the latest edition of the referenced document (including any amendments) applies. 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 consumption
22、Inorganic supporting and filtering materials Methods of test 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Carbon. 4.1.2 Synonym or common name Natural anthraci
23、te. 4.2 Commercial forms Anthracite according to this European Standard is available in different particle size ranges. 5 Physical properties 5.1 Appearance The product is a black coloured lustrous granular material. The product has a granular or angular shape, amorphous structure and smooth texture
24、. The product shall be generally homogeneous and shall be visibly free of extraneous matter. BS EN 12909:2012EN 12909:2012 (E) 6 5.2 Particle size distribution The particle size distribution shall be determined on samples taken at the point of manufacture using the method of test given in EN 12902.
25、NOTE 1 The particle size can decrease during transportation and handling. The particle size distribution shall be described by either: a) effective size: (d10) with a maximum deviation of 5 %; uniformity coefficient: (U) which shall be less than 1,5; minimum size: (d1) with a maximum deviation of 5
26、%; or b) by particle size range and by mass of oversize and undersize particles according to application. The maximum contents of oversize and undersize shall be a mass fraction of 5 % for application of the product as a filtration layer in multi media filters and a mass fraction of 10 % for use in
27、single media filters. For use as a support layer, maximum mass fractions of oversize and undersize of 15 % are acceptable. See A.2.3 for examples of available particle sizes that are used. NOTE 2 Other values can be necessary for certain applications. 5.3 Density 5.3.1 Bulk density loose The bulk de
28、nsity loose shall be in the range of 650 kg/m3to 800 kg/m3.5.3.2 Bulk density packed The bulk density packed shall be in the range of 670 kg/m3to 820 kg/m3.6 Chemical properties This European Standard specifies the minimum purity requirements for anthracite used for the treatment of water intended f
29、or 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, this shall be notified to the user and when necessary to relevant authorities. Users of this product should c
30、heck the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, contents of other impurities and additives used in the products not stated in this product standard. Limits have been gi
31、ven for impurities and chemical parameters where these are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall
32、 be notified to the user. The composition of the commercial product shall conform to Table 1. BS EN 12909:2012EN 12909:2012 (E) 7 Table 1 Composition of commercial product Parameter Mass fraction % C (water and ash free basis) min 90 Ash max 7 Volatile matter max 10 NOTE 1 These parameters do not in
33、fluence filtration properties but give information about the source of anthracite. NOTE 2 Other potential components are given in A.2.1. After filling, washing and commissioning of a filter system producing drinking water, anthracite should not increase the concentrations of chemical parameters (see
34、 1). NOTE 3 Water extractable substances, determined in accordance with the method for granular materials given in EN 12902, can be used to estimate the leaching of the chemicals specified in EN 12902. 7 Test methods 7.1 Sampling Prepare the laboratory sample(s) required by the relevant procedures d
35、escribed in EN 12902. 7.2 Analysis 7.2.1 Particle size distribution The particle size distribution shall be determined in accordance with EN 12902. 7.2.2 Bulk density loose The bulk density loose shall be determined in accordance with EN 12902. 7.2.3 Bulk density packed The bulk density packed shall
36、 be determined in accordance with EN 12902. 7.2.4 Content of carbon The content of carbon shall be determined in accordance with EN 12902. 7.2.5 Ash The ash shall be determined in accordance with EN 12902. 7.2.6 Content of volatile material The content of volatile material shall be determined in acc
37、ordance with EN 12902. BS EN 12909:2012EN 12909:2012 (E) 8 8 Labelling, transportation and storage 8.1 Means of delivery Anthracite shall be delivered in bags, semi-bulk containers, or bulk. In order that the purity of the product is not affected, the means of delivery shall not have been used previ
38、ously for any different product or it shall have been specially cleaned and prepared before use. 8.2 Labelling in accordance with the EU legislation 1)Anthracite is not listed within Annex VI of Regulation (EC) No 1272/2008 at the date of publication of this European Standard. The legislation 2, and
39、 its amendments for the purposes of its adaptation to technical and scientific progress contains a list of substances classified by the EU. Substances not listed in this regulation should be classified on the basis of their intrinsic properties according to the criteria in the regulation by the pers
40、on responsible for the marketing of the substance. 8.3 Transportation regulations and labelling Anthracite is not a dangerous cargo. 8.4 Marking The marking shall include the following: name “Anthracite“, trade name and particle size range; net mass or the volume; name and the address of supplier an
41、d/or manufacturer; statement “this product conforms to EN 12909“. 8.5 Storage (long term stability) Anthracite can be stored for an unlimited period of time. 1) See 2. BS EN 12909:2012EN 12909:2012 (E) 9 Annex A (informative) General information on anthracite A.1 Origin A.1.1 Raw material Natural an
42、thracite coal. A.1.2 Manufacturing process Anthracite is produced by mining, crushing, cleaning, drying and sieving. A.2 Typical properties A.2.1 Chemical composition The composition depends on the origin. Typical limits are given as an example in Table A.1 (the main components are given in Clause 6
43、). Table A.1 Chemical composition ParameterMass fraction % SiO2max 3 Fe2O3max 1Al2O3max 2 CaO max 1 K2O max 1 Na2O max 1Mineralogical and petrological analyses give additional information. A.2.2 Mechanical strength The mechanical strength of anthracite is high. Abrasion products consist of dust and
44、small particles of material. They are formed during transportation, filling, and washing. Abrasion products are not completely removed by washing. The existing methods for determination of abrasion do not lead to exact results regarding behaviour of filter media during operation. They can be used on
45、ly for comparison of different filter media. BS EN 12909:2012EN 12909:2012 (E) 10 A.2.3 Examples of particle size distribution Examples of particle size distribution described by different particle size ranges and a permissible mass fraction of oversize and undersize product are given in Table A.2.
46、Table A.2 Examples of particle size range Particle size range mm Permissible mass fraction % aUndersize Oversize 0,6 to 1,18 0,6 to 1,6 5 5 0,8 to 1,6 1,18 to 2,5 1,4 to 2,5 1,6 to 2,5 2,0 to 4,0 10 10 2,5 to 4,0 2,5 to 5,0 aGenerally the maximum permitted mass fractions of undersize and oversize ar
47、e 5 % for application of the product as a filtration layer in multi media filters and 10 % for use in single media filters. Other particle size ranges can be specified. A.2.4 Density A.2.4.1 Absolute density The absolute density is generally in the range of 1,35 g/cm3to 1,6 g/cm3.A.2.4.2 Particle de
48、nsity dry The particle density dry is generally in the range of 1,35 g/cm3to 1,6 g/cm3.A.2.4.3 Particle density wet The particle density wet is generally in the range of 1,35 g/cm3to 1,6 g/cm3. BS EN 12909:2012EN 12909:2012 (E) 11 A.3 Use A.3.1 Function Anthracite is used as a filtering material. A.
49、3.2 Specific amount The amount of anthracite used depends on the application. Filtration rate and filter media depth vary with the suspended matter content of the water to be filtered. A.3.3 Means of application Anthracite is used in open or closed single or multi media filters. A.3.4 Secondary effects The product has no secondary effects. A.4 Hydraulic characteristics A.4.1 Interstitial volume The interstitial volume is approximately 0,4 (V/V). If used for calculations the interstitial volume
