1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13752:2012Chemicals used for treatment of water intended for human consumption Manganese dioxideBS EN 13752:2012Incorporating corrigendum June 2013Products used for treatme
2、nt of water intended for human consumption Manganese dioxideBS EN 13752:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13752:2012. It supersedes BS EN 13752:2009, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committ
3、ee CII/59, Chemicals for drinking water treatment.A list of organizations represented 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. The British
4、Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 82766 2ICS 71.100.80Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 20
5、13.Amendments/corrigenda issued since publicationDate Text affected30 June 2013 Implementation of CEN correction notice 19 December 2012: Title updatedBS EN 13752:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13752 August 2012 ICS 71.100.80 Supersedes EN 13752:2009English Version Chemical
6、s used for treatment of water intended for human consumption - Manganese dioxide Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Dioxyde de manganse Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Mangandioxid This European Standard was app
7、roved by CEN on 13 July 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 bibliographical references concerning such national
8、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 of a CEN member into its own language a
9、nd 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 Macedonia, France, Germany, Greece, Hung
10、ary, 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 EUROPISCHES KOMITEE FR NORMUNG Manageme
11、nt 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 13752:2012: EProductsBS EN 13752:2012EN 13752:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Te
12、rms, definitions and symbols .64 Description .64.1 Identification .64.1.1 Chemical name .64.1.2 Synonym or common names 64.1.3 Chemical formula .64.1.4 CAS Registry number .74.1.5 EINECS reference .74.2 Commercial form .75 Physical properties 75.1 Appearance 75.2 Particle size distribution .75.3 Den
13、sity 85.3.1 Bulk density loose .85.3.2 Bulk density packed 86 Chemical properties 87 Specific properties.88 Test methods 88.1 Sampling .88.2 Analysis 88.2.1 Particle size distribution .88.2.2 Bulk density loose .88.2.3 Bulk density packed 98.2.4 Oxidation capacity .99 Labelling, transportation and s
14、torage 109.1 Means of delivery 109.2 Labelling according to the EU legislation 119.3 Transportation regulations and labelling . 119.4 Marking 119.5 Storage . 129.5.1 Long term chemical stability . 129.5.2 Storage incompatibility 12Annex A (informative) General information on manganese dioxide . 13A.
15、1 Origin . 13A.1.1 Raw material 13A.1.2 Manufacturing process 13A.2 Typical properties . 13A.2.1 Chemical composition . 13A.2.2 Mechanical strength . 14A.2.3 Alternative description of particle size distribution 14A.2.4 Absolute density . 14A.3 Use . 15BS EN 13752:2012EN 13752:2012 (E) 3 A.3.1 Funct
16、ion 15A.3.2 Method of use 15A.3.3 Oxidation capacity . 15A.3.4 Specific amount . 15A.3.5 Means of application . 15A.3.6 Secondary effects 16A.4 Hydraulic characteristics 16A.4.1 Interstitial volume 16A.4.2 Head loss in filtration 16A.4.3 Expansion in up-flow washing . 16Annex B (normative) General r
17、ules relating to safety . 17B.1 Rules for safe handling and use 17B.2 Emergency procedures . 17B.2.1 First aid . 17B.2.2 Spillage . 17B.2.3 Fire 17Bibliography 18BS EN 13752:2012EN 13752:2012 (E) 4 Foreword This document (EN 13752:2012) has been prepared by Technical Committee CEN/TC 164 “Water Supp
18、ly”, 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 February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013.
19、 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. This document supersedes EN 13752:2009. According to the CEN/CENELEC Internal Regulat
20、ions, the national standards organisations of the following countries 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, Ital
21、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13752:2012EN 13752:2012 (E) 5 Introduction In respect of potential adverse effects on the quality of water intended for human
22、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 of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable Europ
23、ean criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity 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 b
24、y this European Standard is subject to regulation or control by National Authorities. BS EN 13752:2012EN 13752:2012 (E) 6 1 Scope This European Standard is applicable to manganese dioxide used for treatment of water intended for human consumption. It describes the characteristics of manganese dioxid
25、e and specifies the requirements and the corresponding test methods for manganese dioxide. It gives information on its use in water treatment. Two classes of product are specified: Class 1 with hardness greater than or equal to 6 Mohs, Class 2 with hardness less than 6 Mohs. 2 Normative references T
26、he 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, the latest edition of the referenced document (including any amendments) applies. EN 12901
27、: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 Inorganic supporting and filtering materials Methods of test EN ISO 385, Laboratory glassw
28、are Burettes (ISO 385) EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696) ISO 6333, Water quality Determination of manganese Formaldoxime spectrometric method 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbol
29、s given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Manganese dioxide. 4.1.2 Synonym or common names Manganese(IV) oxide, pyrolusite. 4.1.3 Chemical formula MnO2. NOTE Manganese dioxide used as a catalytic filtering medium is a natural ore, usually pyrolusite. Mangan
30、ese dioxide ores differ widely in their chemical composition depending on their origin. Most are composed of manganese dioxide together with silica, alumina, iron oxide and numerous other elements present in varying proportions which might affect mechanical strength. BS EN 13752:2012EN 13752:2012 (E
31、) 7 4.1.4 CAS Registry number 1)Manganese dioxide: 1313-13-9. 4.1.5 EINECS reference 2)Manganese dioxide: 215-202-6. 4.2 Commercial form Manganese dioxide is a granular material usually available in three size ranges: 0,355 mm to 0,850 mm, 0,50 mm to 1,00 mm and 0,5 mm to 3,00 mm. 5 Physical propert
32、ies 5.1 Appearance The product is a granular material varying in colour from dark brown to dark grey to black, depending upon its origin. It consists of amorphous grains which can be rounded or sub-angular. The product shall be generally homogeneous and shall be visibly free of extraneous matter. 5.
33、2 Particle size distribution The particle size distribution shall be described by either: a) effective size: (d10) with a maximum deviation of 5 %; uniformity coefficient: (U) less than 1,5 for Class 1 and Class 2 products with particles smaller than or equal to 1 mm; and less than 2,5 for Class 1 a
34、nd Class 2 products with particles greater than 1 mm. minimum size: (d1) with a limit deviation of 5 %; NOTE The particle size can decrease during transportation and handling. b) or, particle size range and mass fraction of oversize and undersize particles according to application. The maximum conte
35、nts of oversize and undersize shall be a mass fraction of 10 % for application of the product in multimedia filters and a mass fraction of 5 % for use in single media filters. See A.2.3 for examples of available particle sizes that are used. Other values can be necessary for certain applications. 1)
36、Chemical Abstracts Service Registry Number.2)European Inventory of Existing Commercial Chemical Substances. BS EN 13752:2012EN 13752:2012 (E) 8 5.3 Density 5.3.1 Bulk density loose The bulk density loose shall be in the range of 1 750 kg/m3to 1 850 kg/m3for Class 1 and Class 2 products with particle
37、s smaller than or equal to 1 mm and 1 800 kg/m3to 2 200 kg/m3for Class 1 and Class 2 products with particles greater than 1 mm. 5.3.2 Bulk density packed The bulk density packed shall be in the range of 1 950 kg/m3to 2 050 kg/m3for Class 1 and Class 2 products with particles smaller than or equal to
38、 1 mm and 2 000 kg/m3to 2 400 kg/m3for Class 1 and Class 2 products with particles greater than 1 mm. 6 Chemical properties For the composition of the commercial product, see A.2.1. After filling, washing and commissioning of a filter system producing drinking water, manganese dioxide should not inc
39、rease the concentrations of chemical parameters above the regulated values (see 1). NOTE 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. Users of this product
40、 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
41、properties The oxidation capacity of manganese dioxide shall be at least 500 bed volumes when tested according to the method described in 8.2.4. NOTE For a Class 1 product, a greater oxidation capacity may be specified. 8 Test methods 8.1 Sampling Prepare the laboratory sample(s) required by the rel
42、evant procedure described in EN 12902. 8.2 Analysis 8.2.1 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. 8.2.2 Bulk density loose The bulk density loose shall be determined in acco
43、rdance with EN 12902. BS EN 13752:2012EN 13752:2012 (E) 9 8.2.3 Bulk density packed The bulk density packed shall be determined in accordance with EN 12902. 8.2.4 Oxidation capacity 8.2.4.1 Principle A solution of manganese sulfate is passed through a bed of “regenerated” manganese dioxide. Portions
44、 of the effluent are analysed for manganese and the cumulative volume, until breakthrough of manganese, is determined. 8.2.4.2 Reagents 8.2.4.2.1 General All reagents shall be of a recognised analytical grade and the water used shall conform to grade 2 in accordance with EN ISO 3696. 8.2.4.2.2 Manga
45、nese sulfate stock solution, c(Mn) = 5 mg/l Dissolve 1,00 g of sodium hydrogen carbonate (NaHCO3) in water and add 0,154 g of manganese sulfate monohydrate (MnSO4H2O). Dilute to 10,0 l with water and adjust the pH to 7,0 0,5 using dilute sulfuric acid or sodium hydroxide solution as required. 8.2.4.
46、2.3 Manganese sulfate test solution, c(Mn) = 1 mg/l Dilute 2 l of the manganese sulfate stock solution (8.2.4.2.2) to 10 l with water and adjust the pH to 7,0 0,5 using dilute sulfuric acid or sodium hydroxide solution as required. 8.2.4.2.4 Sodium hypochlorite solution, approximately 1 200 mg/l Cl2
47、Dilute 10 ml of sodium hypochlorite solution, available chlorine concentration approximately 120 g/l, to 1 l with water. 8.2.4.3 Apparatus Ordinary laboratory apparatus and glassware together with the following. 8.2.4.3.1 Glass burette of 50 ml capacity conforming to the requirements of EN ISO 385.
48、8.2.4.3.2 Graduated measuring cylinder, 200 ml capacity. 8.2.4.3.3 Borosilicate glass bottle, 10 l capacity. 8.2.4.4 Preparation of test sample Take approximately 100 g of the manganese dioxide and sieve to obtain that fraction of the material sized between 0,355 mm and 0,850 mm, using the procedure
49、 for determination of particle size described in EN 12902. Use this fraction for the determination. Take approximately 20 g of the manganese dioxide (0,355 mm to 0,850 mm), place in a 250 ml beaker and gently wash with successive portions of water until all adherent fines have been removed. Dry the beaker and contents to constant mass at (100 5) C. BS EN 13752:2012EN 13752:2012 (E) 10 Place a loose plug of glass
