1、BSI Standards PublicationBS EN 14368:2015Products used for treatmentof water intended for humanconsumption Manganesedioxide coated limestoneBS EN 14368:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14368:2015. Itsupersedes BS EN 14368:2003 which is withdr
2、awn.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 beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of
3、a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 87330 0ICS 13.060.20; 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publishe
4、d under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedBS EN 14368:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14368 April 2015 ICS 71.100.80 Supersedes EN 14368:2003English Version Products used for trea
5、tment of water intended for human consumption - Manganese dioxide coated limestone Produits utiliss pour le traitement de leau destine la consommation humaine - Carbonate de calcium revtu de dioxyde de manganse Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Mit Mangandioxid besc
6、hichteter Kalkstein This European Standard was approved by CEN on 12 March 2015. 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 b
7、ibliographical references concerning such national 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 res
8、ponsibility of a CEN member into its own language and 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 R
9、epublic of Macedonia, France, Germany, Greece, Hungary, 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 NO
10、RMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14368:2015 EBS EN 14368:2015EN 14368:2015 (E) 2 Contents page Foreword
11、 4 Introduction . 5 1 Scope 6 2 Normative references 6 3 Terms, definitions and symbols . 6 4 Description . 6 4.1 Identification . 6 4.1.1 Chemical name . 6 4.1.2 Synonyms or common names 6 4.1.3 Chemical formula . 6 4.1.4 CAS Registry number 7 4.1.5 EINECS reference 7 4.2 Commercial form . 7 5 Phys
12、ical properties 7 5.1 Appearance 7 5.2 Particle size distribution . 7 5.3 Density 7 5.3.1 Bulk density loose . 7 5.3.2 Bulk density packed 8 6 Chemical properties 8 7 Specific properties. 8 8 Test methods 8 8.1 Sampling . 8 8.2 Analysis 8 8.2.1 Particle size distribution . 8 8.2.2 Bulk density loose
13、 . 8 8.2.3 Bulk density packed 8 8.2.4 Oxidation capacity . 9 9 Labelling, transportation and storage . 10 9.1 Means of delivery . 10 9.2 Labelling according to the EU legislation . 10 9.3 Transportation regulations and labelling 10 9.4 Marking . 11 9.5 Storage 11 9.5.1 Long term chemical stability
14、11 9.5.2 Storage incompatibility . 11 Annex A (informative) General information on manganese dioxide coated limestone 12 A.1 Origin 12 A.1.1 Raw material . 12 A.1.2 Manufacturing process . 12 A.2 Typical properties 12 A.2.1 Chemical composition 12 BS EN 14368:2015EN 14368:2015 (E) 3 A.2.2 Mechanical
15、 strength 12 A.2.3 Alternative description of particle size distribution . 12 A.3 Use 13 A.3.1 Function 13 A.3.2 Oxidation capacity . 13 A.3.3 Amount used 13 A.3.4 Means of application . 13 A.3.5 Secondary effects 13 A.4 Hydraulic characteristics 13 A.4.1 Interstitial volume 13 A.4.2 Headloss in fil
16、tration . 14 A.4.3 Expansion in up-flow washing . 14 Annex B (normative) General rules relating to safety 15 B.1 Rules for safe handling and use 15 B.2 Emergency procedures . 15 B.2.1 First aid . 15 B.2.2 Spillage . 15 B.2.3 Fire 15 Bibliography 16 BS EN 14368:2015EN 14368:2015 (E) 4 Foreword This d
17、ocument (EN 14368:2015) 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 by publication of an identical text or by endorsement, at the latest by October 2015,
18、 and conflicting national standards shall be withdrawn at the latest by October 2015. 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.
19、This document supersedes EN 14368:2003. The main technical difference between this edition and EN 14368:2003 is the updating of 9.2 in line with current legislation. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implem
20、ent this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
21、Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14368:2015EN 14368:2015 (E) 5 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 St
22、andard 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 concerning the use and/or the characteristics
23、 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 by this European Standard is subject to regulation or control by National Authorities. BS
24、EN 14368:2015EN 14368:2015 (E) 6 1 Scope This European Standard is applicable to manganese dioxide coated limestone used for treatment of water intended for human consumption. It describes the characteristics of manganese dioxide coated limestone and specifies the requirements and the corresponding
25、test methods for manganese dioxide coated limestone. It gives information on its use in water treatment. 2 Normative references The 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
26、cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1018, Chemicals used for treatment of water intended for human consumption Calcium carbonate EN 12901:1999, Products used for treatment of water intended for human consumption
27、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 13752, Products used for treatment of water intended for human consumption Manganese dioxide EN ISO 3
28、696, 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 symbols given in EN 12901:1999 apply.
29、 4 Description 4.1 Identification 4.1.1 Chemical name Manganese dioxide on limestone support material. 4.1.2 Synonyms or common names Manganese (IV) oxide, pyrolusite on limestone support material. 4.1.3 Chemical formula MnO2and CaCO3. BS EN 14368:2015EN 14368:2015 (E) 7 4.1.4 CAS Registry number1)M
30、anganese dioxide: 1313-13-9. Calcium carbonate: 471-34-1. 4.1.5 EINECS reference2)Manganese dioxide: 215-202-6. Calcium carbonate: 207-439-9. 4.2 Commercial form Manganese dioxide coated limestone is a granular material available in different particle size ranges. 5 Physical properties 5.1 Appearanc
31、e The product is a granular material varying in colour from dark grey to black. The product shall be generally homogeneous and shall be visibly free of extraneous matter. 5.2 Particle size distribution The particle size distribution shall be described by either: a) effective size: (d10) with a maxim
32、um deviation of 5 %; uniformity coefficient: (U) less than 2,0; minimum size: (d1) with a maximum deviation of 5 %. or b) particle size range and mass fraction of oversize and undersize particles according to application. The maximum contents of oversize and undersize shall be a mass fraction of 5 %
33、 for the application of the product in multimedia filters and a mass fraction of 10 % for use in single media filters. See A.2.3 for examples of available particle sizes that are used. NOTE 1 The particle size can decrease during transportation and handling. NOTE 2 Other values can be necessary for
34、certain applications. 5.3 Density 5.3.1 Bulk density loose The bulk density loose shall be in the range of 1 500 kg/m3to 1 700 kg/m3. 1)Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances. BS EN 14368:2015EN 14368:2015 (E) 8 5.3.2 Bulk density
35、packed The bulk density packed shall be in the range of 1 700 kg/m3to 1 900 kg/m3. 6 Chemical properties This European Standard specifies the minimum purity requirements for manganese dioxide coated limestone used for the treatment of water intended for human consumption. Limits are given for impuri
36、ties commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. Users of this product should satisfy themselves that it is of appropriate purit
37、y 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, and other relevant factors. Limits have been given for impurities and chemical parameters where these ar
38、e likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. The chemical composition of the
39、 product is not relevant to its performance. The chemical composition of the components is given in EN 1018 and EN 13752. After filling, washing and commissioning of a filter system producing drinking water, manganese dioxide coated limestone should not increase the concentrations of chemical parame
40、ters (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. 7 Specific properties The oxidation capacity shall be at least 500 bed volumes when tested
41、according to the method described in 8.2.4. 8 Test methods 8.1 Sampling Prepare the laboratory sample required by the relevant 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 manufactur
42、e using the method of test given in EN 12902. 8.2.2 Bulk density loose The bulk density loose shall be determined in accordance with EN 12902. 8.2.3 Bulk density packed The bulk density packed shall be determined in accordance with EN 12902. BS EN 14368:2015EN 14368:2015 (E) 9 8.2.4 Oxidation capaci
43、ty 8.2.4.1 Principle A solution of manganese sulfate is passed through a bed of “regenerated” manganese dioxide coated limestone. Portions 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 reag
44、ents shall be of a recognized analytical grade and the water used shall conform to grade 2 in accordance with EN ISO 3696. 8.2.4.2.2 Potassium permanganate, solution 3,0 g/l Dissolve 6,0 g of potassium permanganate (KMnO4) in 2 l of water. Decant the clear solution and store in a dark bottle. 8.2.4.
45、2.3 Manganese sulfate, solution 5 mg/l Dissolve 1,00 g of sodium hydrogen carbonate (NaHCO3) in water and add 0,1538 g of manganese sulfate monohydrate (MnSO4.H2O). Dilute to 10 l with water and adjust the pH to 7,0 0,5 using dilute sulfuric acid or sodium hydroxide solution as required. 8.2.4.3 App
46、aratus 8.2.4.3.1 General Ordinary laboratory apparatus and glassware together with the following. 8.2.4.3.2 Glass or transparent plastic column, length 1,00 m, inside diameter 25 mm, equipped with a flow control valve at its base. 8.2.4.3.3 Graduated measuring cylinder, 200 ml capacity. 8.2.4.3.4 Bo
47、rosilicate glass bottle, 10 l capacity. 8.2.4.4 Procedure 8.2.4.4.1 Regeneration of material Measure 300 ml of packed manganese dioxide coated limestone granules with the measuring cylinder (8.2.4.3.3), and place them in the column (8.2.4.3.2). Connect the outlet of the column to a cold water tap by
48、 means of suitable flexible tubing and backwash the granules with a water flow sufficient to fluidize the bed. Allow the granules to settle and regenerate the manganese dioxide coated limestone by running 2 l of potassium permanganate solution (8.2.4.2.2) through the column with a flow rate of about
49、 500 ml/h. Rinse carefully with water until complete disappearance of the pink colour. 8.2.4.4.2 Determination Run the manganese sulfate solution (8.2.4.2.3) at a flow rate of 5 l/h through the column and collect the effluent in separate fractions of 200 ml each. Analyse the fractions for manganese in accordance with ISO 6333 and stop the manganese sulfate solution flow when the concentration of manganese in the effluent is higher than 0,05 mg/l. Reject this last fraction and note the total volume of the manganese-free water discharged fro
