1、July 2009DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.100.80!$Xld“1537365www
2、.din.deDDIN EN 12915-2Products used for the treatment of water intended for humanconsumption Granular activated carbon Part 2: Reactivated granular activated carbonEnglish version of DIN EN 12915-2:2009-07Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Granulierte Aktivkohle Teil 2
3、: Reaktivierte granulierte AktivkohleEnglische Fassung DIN EN 12915-2:2009-07SupersedesDIN EN 12915-2:2003-09 andDIN EN 12915-2 Corrigendum1:2006-08www.beuth.deDocument comprises pages16DIN EN 12915-2:2009-07 National foreword This standard has been prepared by Technical Committee CEN/TC 164 “Water
4、supply” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Technical Committee NA 119-04-02 AA Wasseraufbereitung. Users of this standard are advised of the reservations stated in the Introdu
5、ction of the European Standard and should note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV2001) (German Drinking Water Ordinance). Amendments This standard differs from DIN EN 12915-2:2003-09 and DIN EN 12915-2
6、 Corrigendum 1:2006-08 as follows: a) General purity criteria have been given in more detail. Previous editions DIN EN 12915-2: 2003-09 DIN EN 12915-2 Corrigendum 1: 2006-08 National Annex NA (informative) Bibliography Verordnung zur Novellierung der Trinkwasserverordnung (German Regulation amending
7、 the German Drinking Water Regulation), as of 21 May 2001, BGBl. (German Federal Law Gazette) I (2001), No. 24, pp. 959-9801)1)Registered in the DITR database of DIN Software GmbH, obtainable from: Beuth Verlag GmbH, 10772 Berlin. 2 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12915-2March 2009
8、ICS 71.100.80 Supersedes EN 12915-2:2003 English VersionProducts used for the treatment of water intended for humanconsumption - Granular activated carbon - Part 2: Reactivatedgranular activated carbonProduits utiliss pour le traitement de leau destine laconsommation humaine - Charbon actif en grain
9、s - Partie 2: Charbon actif en grains ractivProdukte zur Aufbereitung von Wasser fr denmenschlichen Gebrauch - Granulierte Aktivkohle - Teil 2:Reaktivierte granulierte AktivkohleThis European Standard was approved by CEN on 1 February 2009.CEN members are bound to comply with the CEN/CENELEC Interna
10、l Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.T
11、his European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are t
12、he national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
13、 and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12915-2:2
14、009: EEN 12915-2:2009 (E) 2 Contents Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 Description .65 Physical properties 66 Chemical properties 87 Specific properties.88 Test methods 89 Labelling, transportation and storage .9Annex A (informative) General inform
15、ation on reactivated granular activated carbon 10Bibliography . 14DIN EN 12915-2:2009-07 EN 12915-2:2009 (E) 3 Foreword This document (EN 12915-2:2009) 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
16、 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 withdrawn at the latest by September 2009. This document supersedes EN 12915-2:2003. Attention is drawn to the possibility th
17、at 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. Differences between this edition and EN 12915-2:2003 are editorial to harmonize the text with other standards in this series.
18、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 carbon and Part 2 gives requirements for reactivated granular activated carbon. According to the CEN/CENELEC Internal Regulati
19、ons, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
20、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 12915-2:2009-07 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 th
21、is European Standard: 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 conc
22、erning the use and/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
23、regulation or control by National Authorities. DIN EN 12915-2:2009-07 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. It describes the characteristics of reactivated granular activa
24、ted 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 indispensable for the application of this document. For dated refe
25、rences, 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 - Inorganic supporting and filtering materials Definitions EN 12902
26、, 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 activated carbon - Part 1: Virgin granular activated carbon 3 T
27、erms 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 reactivated EN 12915-1:2009 3.2 wettability ability of granular
28、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 reduced adsorption capacity as a result of operational use 3.4
29、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. spent granular activated carbon that has been subjected to rea
30、ctivation 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 carbon. DIN EN 12915-2:2009-07 EN 12915-2:2009 (E) 6 3.6 make-u
31、p granular activated carbon virgin granular activated carbon, or reactivated granular activated carbon from the same water treatment plant, added to the reactivated granular activated carbon to compensate for losses during the operations of reactivation (handling, transportation and reactivation its
32、elf) 3.7 top-up granular activated carbon virgin granular activated carbon, or reactivated granular activated carbon from 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 o
33、f 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 common names Reactivated activated coal, reactivated activated charcoal, reactivated active carbon, regenerated granular activated carbon, regenerated activated c
34、oal, regenerated activated charcoal, regenerated active carbon. 4.1.3 Chemical formula C (elementary). 4.1.4 CAS Registry Number 17440-44-0. 4.1.5 EINECS reference 2231-153-3. 4.2 Commercial forms Granular activated carbon is a granular product; by convention not less than a mass fraction of 90 % is
35、 retained on a 180 m aperture test sieve (see 5.3). The product can be either shaped (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 General The phys
36、ical properties of reactivated granular activated carbon are dependent on the quality of the spent granular activated carbon as well as on the reactivation process. 1Chemical Abstracts Service Registry Number. 2European Inventory of Existing Commercial Chemical Substances. DIN EN 12915-2:2009-07 EN
37、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 determined
38、 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 particle size
39、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 distribution s
40、hall 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 for cer
41、tain 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 possible to 0
42、,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 the sup
43、pliers declared value. DIN EN 12915-2:2009-07 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 granular activated carbon as well as on the reactivation process. See A.2.3. NOTE Users of this product
44、 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 other impurities and additives used in the products not stated in the product standard. 7 Specific
45、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 reactivated granular activated carbon. NOTE 1 The iodine number of reactivated granular activated car
46、bon 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 indices are required. NOTE 3 It should be stated whether the iodine number determination was carried
47、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 Analysis 8.2.1 Particle size distribution The particle size distribution shall be determined in accord
48、ance 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-
49、1. 8.2.5 Iodine number The iodine number shall be determined in accordance with EN 12902. DIN EN 12915-2:2009-07 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 boxes of 200 kg to 800 kg), or in bulk (up to 50 m3). In order that the purity of the product is not affected, the means of delivery shall n
