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1、BRITISH STANDARD Products used for the treatment of water intended for human consumption Granular activated carbon Part 2: Reactivated granular activated carbon ICS 71.100.80 ? BS EN 12915-2:2003 Incorporating Corrigendum May 2006 BS EN 12915-2:2003 This British Standard was published under the auth
2、ority of the Standards Policy and Strategy Committee on 31 July 2003 ISBN 978 0 580 64343 9 National foreword Amendments/corrigenda issued since publication DateComments 30 April 2009 Addition of supersession details. Implementation of CEN corrigendum May 2006. BSI 2009 This British Standard is the
3、UK implementation of EN 12915-2:2003, incorporating corrigendum May 2006. Together with BS EN 12915-1:2003, it supersedes BS EN 12915:1999 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CIT/59, Chemicals for drinking water treatment. A list of organi
4、zations represented on this committee can be obtained on request to its secretary. 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 (incl
5、uding associated impurities) used in the preparation of drinking water do not 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 regulati
6、on 25 of the Water Supply (Water Quality) Regulations 1989 (similar provisions 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 c
7、ontained in the List of Products and Processes Approved Under Regulations 25 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
8、(www.dwi.gov.uk). 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. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12915-2
9、 April 2003 ICS 71.100.80 English version Products used for the treatment of water intended for human consumption - 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
10、 2: Charbon actif en grains ractiv Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Granulierte Aktivkohle - Teil 2: Reaktivierte granulierte Aktivkohle This European Standard was approved by CEN on 14 February 2003. CEN members are bound to comply with the CEN/CENELEC Internal Re
11、gulations which stipulate the conditions for giving this 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 E
12、uropean 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 its own language and notified to the Management Centre has the same status as the official versions. CEN members are the nat
13、ional standards bodies of Austria, Belgium, Czech Republic, 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
14、NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management 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 12915-2:2003 E Incorporating corrigendum May 2006 Supersedes EN 12915:1999 2 Co
15、ntents page Foreword3 Introduction.4 1Scope 5 2Normative references 5 3Terms and definitions5 4Description .6 4.1Identification.6 4.2Commercial forms .6 5Physical properties6 5.1General6 5.2Appearance.7 5.3Particle size distribution .7 5.4Wettability.7 5.5Bulk density packed 7 5.6Mechanical strength
16、 7 6Chemical properties 8 7Specific properties.8 8Test methods8 8.1Sampling.8 8.2Analysis 8 9Labelling, transportation and storage .9 9.1Means of delivery.9 9.2Risk and safety labelling according to the EU directives .9 9.3Transportation regulations and labelling9 9.4Marking .9 9.5Storage9 Annex A (
17、informative) General information on reactivated granular activated carbon.10 Bibliography14 BS EN 13785:2005+A1:2008 EN 13785:2005+A1:2008 (E) 3 Foreword This document (EN 12915-2:2003) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. Thi
18、s 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 October 2003, and conflicting national standards shall be withdrawn at the latest by October 2003. This European Standard consists of two parts, Part 1
19、 is concerned with virgin granular activated carbon and Part 2 Annex A is informative. NOTEConformity with this 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 t
20、o regulation or control by National Authorities. countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerl
21、and and the United Kingdom. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following gives requirements for reactivated granular activated carbon. This document, together with EN 12915-1:2003, supersedes EN 12915:1999. BS EN 13785:2005+A1:2008 EN 13785
22、:2005+A1:2008 (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 whether the product may be used without restriction in any
23、 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. BS EN 13785:2005+A1:2008 EN 13785:2005+A1:2008 (E) 5 1 Scope
24、This part of EN 12915 is applicable to reactivated granular activated carbon used for treatment of water intended for human consumption. It describes the characteristics of reactivated granular activated carbon and specifies the requirements and the corresponding test methods for reactivated granula
25、r 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 publications are li
26、sted 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 (including amendments). EN
27、12901, 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 - Inorganic supporting and filtering materials - Methods of test. EN 12915-1:2003, Prod
28、ucts used for the treatment of water intended for human consumption Granular activated carbon - Part 1: Virgin granular activated carbon. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 12901 and the following apply: 3.1 virgin activated carb
29、on freshly manufactured activated carbon that has not been used and has not been reactivated EN 12915-1:2003 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 E
30、N 12915-1:2003 3.3 spent granular activated carbon granular activated carbon with reduced 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 NOTEThe most common process is thermal react
31、ivation but other methods can be used. 3.5 reactivated granular activated carbon. spent granular activated carbon that has been subjected to reactivation NOTEUsually, reactivated granular activated carbon is returned to the water treatment plant at which it was previously used. The delivered product
32、 can include make-up granular activated carbon and/or top-up granular activated carbon. BS EN 13785:2005+A1:2008 EN 13785:2005+A1:2008 (E) -,-,- 6 3.6 make-up granular activated carbon virgin granular activated carbon, or reactivated granular activated carbon from the same water treatment plant, add
33、ed 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 from the same water treatm
34、ent 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) Carbon. 4.1.2 Synonym or commo
35、n 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 Registry Number 1) 7440- 44-0.
36、 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 90 percent by mass (% (m/m) is retained on a 180 m aperture test sieve (see 5.3). The product can be either shaped (moulded/extruded) or irregular (non-moulded), an
37、d 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 activated carbon as well a
38、s on the reactivation process. 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. BS EN 13785:2005+A1:2008 EN 13785:2005+A1:2008 (E) 7 5.2 Appearance The commercial product consists of black, porous granules of irregular shape or, for mou
39、lded 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 determined on samples taken at the point of reactivation. The particle size distribution shall be within the suppliers stated tolera
40、nce. NOTE 1Different applications can require different particle size ranges. NOTE 2The particle size can decrease during transportation and handling. NOTE 3The particle size distribution is dependent on that of the spent granular activated carbon. It can be impossible to guarantee a particular part
41、icle size distribution if the spent granular activated carbon has a substantially degraded particle size distribution. 5.3.2 Irregular product The particle size distribution shall be described by particle size range and by mass of oversize and undersize particles according to application: ? the cont
42、ent of oversize plus undersize shall not exceed 15 % (m/m) and not more than 5 % (m/m) shall be undersize. NOTE 1Other values can be necessary for certain applications. NOTE 2Alternatively, particle size distribution can be described by: ? effective size: (d10); ? uniformity coefficient: (U); ? mini
43、mum size: (d1). 5.3.3 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. 5.4 Wettability The wettability shall be greater than 99 % (m/m). 5.5 Bulk density packed The bulk density packed sha
44、ll be greater than or equal to 180 kg/m3. 5.6 Mechanical strength The ball-pan hardness shall be greater than or equal to the suppliers declared value. BS EN 13785:2005+A1:2008 EN 13785:2005+A1:2008 (E) 8 6 Chemical properties The chemical properties of reactivated granular activated carbon are depe
45、ndent on the quality of the spent granular activated carbon as well as on the reactivation process. See A.2.3. 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 d
46、osage, contents of other impurities and additives used in the products not stated in the product standard, and other relevant factors. 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 sha
47、ll state the iodine numbers of the spent and reactivated granular activated carbon. NOTE 1The 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 2The purchaser should notify
48、 the supplier if data for other adsorption indices are required. NOTE 3It 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 releva
49、nt 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 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 12915-1. 8.2.4 Ball-pan hardness The ball-pan hardness shall be determined in accordance with EN 12915-1. 8.2.5 I