1、BS EN12915-2:2009ICS 13.060.20; 71.100.80NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDProducts used forthe treatment ofwater intended forhuman consumption Granular activatedcarbonPart 2: Reactivated granular activatedcarbonThis British Standardwas published u
2、nder theauthority of the StandardsPolicy and StrategyCommittee on 30 June2009. BSI 2009ISBN 978 0 580 63251 8Amendments/corrigenda issued since publicationDate CommentsBS EN 12915-2:2009National forewordThis British Standard is the UK implementation of EN 12915-2:2009. Itsupersedes BS EN 12915-2:200
3、3 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented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 be obtained onrequest to its secretary.This publication does not purport to include all the necess
4、ary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 12915-2:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12915-2March 2009ICS 71.100.80 Supersedes EN 12915-2:2003 English Version
5、Products 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 grains - Partie2: Charbon actif en grains ractivProdukte zur
6、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 Internal Regulations which stipulate the conditions for giving t
7、his 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.This European Standard exists in three official versions (
8、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 the national standards bodies of Austria, Belgium, Bulgari
9、a, 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 and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIO
10、NCOMIT 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 12915-2:2009: EBS EN 12915-2:2009EN 12915-2:2009 (E) 2 Contents Fo
11、reword 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 information on reactivated granular activated
12、 carbon 10Bibliography . 14BS EN 12915-2:2009EN 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 the status of a national standard, either b
13、y 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 that some of the elements of this document may
14、 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. The note in Clause 6 concerning the purity o
15、f 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 Regulations, the national standards organizations of
16、 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, Netherlands, Norway, Poland, Portugal, Romania, Slov
17、akia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12915-2:2009EN 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 p
18、rovides 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 and/or the characteristics of this
19、 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 control by National Authorities. BS
20、 EN 12915-2:2009EN 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 activated carbon and specifies the requirements and the corr
21、esponding 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 references, only the edition cited applies. For undated re
22、ferences, 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, Products used for the treatment of water intended fo
23、r 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 Terms and definitions For the purposes of this document
24、, 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 activated carbon to be wetted when in contact with wat
25、er, 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 reactivation process used to restore all or part of th
26、e 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 reactivation NOTE Usually, reactivated granular activated
27、 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. BS EN 12915-2:2009EN 12915-2:2009 (E) 6 3.6 make-up granular activated carbon virgin granular activated carbo
28、n, 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 itself) 3.7 top-up granular activated carbon virgin granular a
29、ctivated 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 of granular activated carbon at the water treatment plant 4
30、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 coal, regenerated activated charcoal, regenerated active car
31、bon. 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 retained on a 180 m aperture test sieve (see 5.3). The pro
32、duct 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 physical properties of reactivated granular activated carbon ar
33、e 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. BS EN 12915-2:2009EN 12915-2:2009 (E) 7 5.2 Appearance The commercial product consist
34、s 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 on samples taken at the point of reactivation. The particle siz
35、e 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 distribution is dependent on that of the spent granular activate
36、d 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 shall be described by particle size range and by mass of oversize
37、 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 certain applications. NOTE 2 Alternatively, particle size distribut
38、ion 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 0,75 times the nominal particle diameter. 5.4 Wettability The wet
39、tability 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 suppliers declared value. BS EN 12915-2:2009EN 12915-2:2009 (E) 8 6
40、 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 should check the national regulations in order to clarify whether it
41、 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 properties The iodine number of the reactivated granular activated ca
42、rbon 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 carbon is dependent on the quality of the spent granular activated carbo
43、n 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 out on product including make-up and/or top-up granular activated car
44、bon. 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 accordance with EN 12902. 8.2.2 Wettability The wettability shall be determ
45、ined 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 Iodine number The iodine number shall be determined in accor
46、dance with EN 12902. BS EN 12915-2:2009EN 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
47、 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 not have been used previously for any different product or it shall have been specially cleaned and prepared before use. 9.2 Risk and safety labelling according to th
48、e EU directives 3At the date of publication of this European Standard, granular activated carbon was not listed as a dangerous substance. NOTE Annex I of the Directive 67/548/EEC on Classification, packaging and labelling of dangerous substances and its amendments and adaptations in the European Uni
49、on contains a list of substances classified by the EU. Substances not in this annex I should be classified on the basis of their intrinsic properties according to the criteria in the Directive by the person responsible for the marketing of the substance. 9.3 Transportation regulations and labelling At the date of publication of this European Standard, steam reactivated granular activated carbon was not a dangerous cargo. NOTE EU regulations apply to the transport of spent granular activated carbon see 2 an
