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1、BS EN 12915-2:2009 ICS 13.060.20; 71.100.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Products used for the treatment of water intended for human consumption Granular activated carbon Part 2: Reactivated granular activated carbon Licensed Copy: x x, The
2、University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2009. BSI 2009 ISBN 978 0 580 63251 8 Amendments/corrigenda issued since publication DateComments BS EN 12915-2:2009
3、 National foreword This British Standard is the UK implementation of EN 12915-2:2009. It supersedes BS EN 12915-2:2003 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment. A list of organizations represented
4、on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy:
5、x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI BS EN 12915-2:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12915-2 March 2009 ICS 71.100.80Supersedes EN 12915-2:2003 English Version Products used for the treatment of water intended for human consumption -
6、Granular activated carbon - Part 2: Reactivated granular activated carbon Produits utiliss pour le traitement de leau destine la consommation humaine - Charbon actif en grains - Partie 2: Charbon actif en grains ractiv Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Granulierte A
7、ktivkohle - Teil 2: Reaktivierte granulierte Aktivkohle This European Standard was approved by CEN on 1 February 2009. 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
8、any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language mad
9、e by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fran
10、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR
11、 NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12915-2:2009: E Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI BS EN 1
12、2915-2:2009 EN 12915-2:2009 (E) 2 Contents Foreword 3? Introduction .4? 1?Scope 5? 2?Normative references 5? 3?Terms and definitions .5? 4?Description .6? 5?Physical properties 6? 6?Chemical properties 8? 7?Specific properties.8? 8?Test methods 8? 9?Labelling, transportation and storage .9? Annex A
13、(informative) General information on reactivated granular activated carbon 10? Bibliography . 14? Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI BS EN 12915-2:2009 EN 12915-2:2009 (E) 3 Foreword This document (EN 12915-2:2009) has been prepared by Techn
14、ical 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 September 2009, and conflicting national standards shall be wit
15、hdrawn at the latest by September 2009. This document supersedes EN 12915-2:2003. 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 rights. Diff
16、erences between this edition and EN 12915-2:2003 are editorial to harmonize the text with other standards in this series. The note in Clause 6 concerning the purity of the product has been reworded. This European Standard consists of two parts, Part 1 is concerned with virgin granular activated carb
17、on and Part 2 gives requirements for reactivated granular activated carbon. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, E
18、stonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27,
19、Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m BS EN 12915-2:2009 EN 12915-2:2009 (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 n
20、o 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 and/or the characteristics of this product
21、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 control by National Authorities. Licensed Co
22、py: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m BS EN 12915-2:2009 EN 12915-2:2009 (E) 5 1 Scope This part of EN 12915 is applicable to reactivated granular activated carbon used for treatment of water intended for human consumption. I
23、t describes the characteristics of reactivated granular activated carbon and specifies the requirements and the corresponding test methods for reactivated granular activated carbon. It gives information on its use in water treatment. 2 Normative references The following referenced documents are indi
24、spensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12901:1999, Products used for the treatment of water intended for human consumption - Ino
25、rganic supporting and filtering materials Definitions EN 12902, Products used for the treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test EN 12915-1:2009, Products used for the treatment of water intended for human consumption Granular a
26、ctivated carbon - Part 1: Virgin granular activated carbon 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12901:1999 and the following apply. 3.1 virgin activated carbon freshly manufactured activated carbon that has not been used and has not been re
27、activated EN 12915-1:2009 3.2 wettability ability of granular activated carbon to be wetted when in contact with water, determined by measuring the quantity of material that sinks in water under specified conditions EN 12915-1:2009 3.3 spent granular activated carbon granular activated carbon with r
28、educed adsorption capacity as a result of operational use 3.4 reactivation process used to restore all or part of the adsorption capacity of spent granular activated carbon NOTE The most common process is thermal reactivation but other methods can be used. 3.5 reactivated granular activated carbon.
29、spent granular activated carbon that has been subjected to reactivation NOTE Usually, reactivated granular activated carbon is returned to the water treatment plant at which it was previously used. The delivered product can include make-up granular activated carbon and/or top-up granular activated c
30、arbon. Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m BS EN 12915-2:2009 EN 12915-2:2009 (E) 6 3.6 make-up granular activated carbon virgin granular activated carbon, or reactivated granular activated carbon from the same w
31、ater treatment plant, added to the reactivated granular activated carbon to compensate for losses during the operations of reactivation (handling, transportation and reactivation itself) 3.7 top-up granular activated carbon virgin granular activated carbon, or reactivated granular activated carbon f
32、rom the same water treatment plant, added to the reactivated granular activated carbon to compensate for losses due to operational (in-service) losses due to attrition and wash-out of granular activated carbon at the water treatment plant 4 Description 4.1 Identification 4.1.1 Chemical name(s) Carbo
33、n. 4.1.2 Synonym or common names Reactivated activated coal, reactivated activated charcoal, reactivated active carbon, regenerated granular activated carbon, regenerated activated coal, regenerated activated charcoal, regenerated active carbon. 4.1.3 Chemical formula C (elementary). 4.1.4 CAS Regis
34、try Number 1 7440-44-0. 4.1.5 EINECS reference 2 231-153-3. 4.2 Commercial forms Granular activated carbon is a granular product; by convention not less than a mass fraction of 90 % is retained on a 180 m aperture test sieve (see 5.3). The product can be either shaped (moulded/extruded) or irregular
35、 (non- moulded), and is available in many grades, differing in adsorption characteristics, hardness, porosity, granulometry, shape and purity. 5 Physical properties 5.1 General The physical properties of reactivated granular activated carbon are dependent on the quality of the spent granular activat
36、ed carbon as well as on the reactivation process. 1 Chemical Abstracts Service Registry Number. 2 European Inventory of Existing Commercial Chemical Substances. Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m BS EN 12915-2:2
37、009 EN 12915-2:2009 (E) 7 5.2 Appearance The commercial product consists of black, porous granules of irregular shape or, for moulded or extruded products, in forms such as uniform cylinders, pellets or spheres. 5.3 Particle size distribution 5.3.1 General The particle size distribution shall be det
38、ermined on samples taken at the point of reactivation. The particle size distribution shall be within the suppliers stated tolerance. NOTE 1 Different applications can require different particle size ranges. NOTE 2 The particle size can decrease during transportation and handling. NOTE 3 The particl
39、e size distribution is dependent on that of the spent granular activated carbon. It can be impossible to guarantee a particular particle size distribution if the spent granular activated carbon has a substantially degraded particle size distribution. 5.3.2 Irregular product The particle size distrib
40、ution shall be described by particle size range and by mass of oversize and undersize particles according to application: the content of oversize plus undersize shall not exceed a mass fraction of 15 % and not more than a mass fraction of 5 % shall be undersize. NOTE 1 Other values can be necessary
41、for certain applications. NOTE 2 Alternatively, particle size distribution can be described by: effective size: (d10); uniformity coefficient: (U); minimum size: (d1). 5.3.3 Moulded/extruded product Not more than a mass fraction of 3 % shall pass a test sieve with an aperture size as close as possib
42、le to 0,75 times the nominal particle diameter. 5.4 Wettability The wettability shall be greater than a mass fraction of 99 %. 5.5 Bulk density packed The bulk density packed shall be greater than or equal to 180 kg/m3. 5.6 Mechanical strength The ball-pan hardness shall be greater than or equal to
43、the suppliers declared value. Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI BS EN 12915-2:2009 EN 12915-2:2009 (E) 8 6 Chemical properties The chemical properties of reactivated granular activated carbon are dependent on the quality of the spent granul
44、ar activated carbon as well as on the reactivation process. See A.2.3. NOTE Users of this product should check 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 ot
45、her impurities and additives used in the products not stated in the product standard. 7 Specific properties The iodine number of the reactivated granular activated carbon shall be not less than 600 mg/g when tested according to 8.2.2. The supplier shall state the iodine numbers of the spent and reac
46、tivated granular activated carbon. NOTE 1 The iodine number of reactivated granular activated carbon is dependent on the quality of the spent granular activated carbon as well as on the reactivation process. See A.2.4. NOTE 2 The purchaser should notify the supplier if data for other adsorption indi
47、ces are required. NOTE 3 It should be stated whether the iodine number determination was carried out on product including make-up and/or top-up granular activated carbon. 8 Test methods 8.1 Sampling Prepare the laboratory sample(s) required by the relevant procedures described in EN 12902. 8.2 Analy
48、sis 8.2.1 Particle size distribution The particle size distribution shall be determined in accordance with EN 12902. 8.2.2 Wettability The wettability shall be determined in accordance with EN 12915-1. 8.2.3 Bulk density packed The bulk density packed shall be determined in accordance with EN 12915-
49、1. 8.2.4 Ball-pan hardness The ball-pan hardness shall be determined in accordance with EN 12915-1. 8.2.5 Iodine number The iodine number shall be determined in accordance with EN 12902. Licensed Copy: x x, The University of Sheffield, 01/07/2009 15:27, Uncontrolled Copy, (c) BSI BS EN 12915-2:2009 EN 12915-2:2009 (E) 9 9 Labelling, transportation and storage 9.1 Means of delivery Reactivated granular activated carbon shall be delivered in paper sacks (10 kg to 25 kg), semi-bulk containers (polypropylene bags, metal or cardboard drums, or corrugated