1、BSI Standards PublicationBS EN 16070:2014Products used for treatmentof water intended for humanconsumption Natural zeoliteBS EN 16070:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16070:2014.The UK participation in its preparation was entrusted to Technic
2、alCommittee 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 a contract. Users are responsible for its correctapplication. The Br
3、itish Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79692 0ICS 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2
4、014.Amendments issued since publicationDate Text affectedBS EN 16070:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16070 March 2014 ICS 71.100.80 English Version Products used for treatment of water intended for human consumption - Natural zeolite Produits utiliss pour le traitement de le
5、au destine la consommation humaine - Zolite naturelle Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Natrlicher Zeolith This European Standard was approved by CEN on 6 February 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co
6、nditions 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exi
7、sts 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national st
8、andards bodies of 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, Slovakia,
9、Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means rese
10、rved worldwide for CEN national Members. Ref. No. EN 16070:2014 EBS EN 16070:2014EN 16070:2014 (E) 2 Contents Page Foreword 3 Introduction .3 1 Scope 5 2 Normative references 5 3 Terms, definitions and symbols .5 4 Description .5 4.1 Identification .5 4.2 Commercial form .6 4.3 Types of natural zeol
11、ites .6 5 Physical properties 6 5.1 Appearance 6 5.2 Particle size distribution .6 5.3 Density (bulk density loose) .7 6 Chemical and mineralogical properties 7 6.1 General 7 6.2 Capacity 8 7 Test methods 8 7.1 Sampling .8 7.2 Analysis 8 8 Labelling, transportation and storage 11 8.1 Means of delive
12、ry 11 8.2 Labelling according to the EU legislation . 11 8.3 Transportation regulations and labelling . 11 8.4 Marking 11 8.5 Storage . 11 Annex A (informative) General information on natural zeolites 12 A.1 Origin . 12 A.2 Typical properties . 12 A.3 Use . 16 A.4 Hydraulic characteristics . 16 A.5
13、Rules for safe handling and use . 16 A.6 Emergency procedures 16 Bibliography . 18 BS EN 16070:2014EN 16070:2014 (E) 3 Foreword This document (EN 16070:2014) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be
14、 given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2014 and conflicting national standards shall be withdrawn at the latest by September 2014. Attention is drawn to the possibility that some of the elements of this docum
15、ent may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A
16、ustria, 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, Slovakia, Slovenia, Spain, Sw
17、eden, Switzerland, Turkey and the United Kingdom. BS EN 16070:2014EN 16070:2014 (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 informatio
18、n 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 product remain in fo
19、rce. 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 EN 16070:2014EN 1607
20、0:2014 (E) 5 1 Scope This European Standard is applicable to natural zeolites used for treatment of water intended for human consumption. It describes the characteristics of natural zeolites and specifies the requirements and the corresponding test methods for natural zeolites. It gives information
21、on their use in water treatment. The natural zeolites included in this standard are clinoptilolite, chabasite and phillipsite/analcime. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For date
22、d references, 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 treatment of water intended for human consumption - Inorganic supporting and filtering materials - Definitions EN 1
23、2902:2004, Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696) EN ISO 14911, Water quality - Determination of dissolved Li+, N
24、a+, NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ using ion chromatography - Method for water and waste water (ISO 14911) 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical n
25、ame(s) Crystalline hydrated aluminosilicate. 4.1.2 Synonym or common names Zeolite; Hydrated sodium, potassium, calcium, magnesium aluminosilicate. 4.1.3 Chemical formula General formula: MxDyAlx+2ySizO2x+4y+2z n H2O where M = Na, K, Li; D = Ca, Mg; x/y/z = 1 to 6; BS EN 16070:2014EN 16070:2014 (E)
26、6 n = 1 to 6. 4.1.4 CAS Registry number 1)1318-02-1 12173-10-3 12271-42-0 12251-32-0 61027-84-7 1318-10-1 4.1.5 EINECS reference 2)215-283-8 4.2 Commercial form Natural zeolites are dry granular products, available in different particle sizes. 4.3 Types of natural zeolites There are over 200 differe
27、nt zeolites with about 30 natural zeolites. However, not all natural zeolites can be used in the treatment of water intended for human consumption. Given the particular characteristics needed for this type of application, only three species are identified: clinoptilolite, chabazite and phillipsite/a
28、nalcime. These zeolites are available in large quantities in Europe, with no trace of hazardous or toxic elements. 5 Physical properties 5.1 Appearance The product consists of dry, free flowing granules. The product has a granular shape and a rough texture. The product shall be generally homogeneous
29、 and shall be visibly free of extraneous matter. 5.2 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. NOTE 1 The particle size can decrease during transportation and handling. The pa
30、rticle size distribution shall be described by either: a) effective size: (d10) with a maximum deviation of 5 %; median size: (d50) with a maximum deviation of 5 %; 1)Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances. BS EN 16070:2014EN 16070
31、:2014 (E) 7 uniformity coefficient: (U) shall be less than 1,5; minimum size: (d1) with a maximum deviation of 5 %; or b) by particle size range and by mass fraction of oversize and undersize particles (see A.2.2.1). The maximum permitted mass fractions of oversize and undersize are 5 %. NOTE 2 Othe
32、r values might be necessary for certain applications. 5.3 Density (bulk density loose) The bulk density loose shall be in the range of: 800 kg/m3to 1 100 kg/m3for a clinoptilolite type zeolite; 700 kg/m3to 850 kg/m3for a chabazite type zeolite; 1 000 kg/m3to 1 100 kg/m3for a phillipsite/analcime typ
33、e zeolite. 6 Chemical and mineralogical properties 6.1 General This European Standard specifies the minimum purity requirements for natural zeolite used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw ma
34、terial 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 check the national regulations in order to clarify whether it is of appropriate purity for treatment of water
35、intended for human consumption, taking into account raw water quality, contents of other impurities and additives used in the product not stated in this product standard. Limits have been given for impurities and chemical parameters where these are likely to be present in significant quantities from
36、 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 composition of the commercial product shall conform to Table 1. Table 1 null Com
37、position of commercial product Parameters Limit in mass fraction % Mass loss at 150 C max. 7 Ignition loss at 650 C max. 14 After filling, washing and commissioning of a filter system producing drinking water, natural zeolite should not increase the concentrations of chemical parameters (see1). NOTE
38、 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. BS EN 16070:2014EN 16070:2014 (E) 8 6.2 Capacity The cations that maintain the electronic neutrality of the z
39、eolite structure can be exchanged. This is a selective cation exchange according to the zeolite affinity for the replacing cation. The total cation exchange capacity and the selectivity are specific to each type of zeolite. This property makes the zeolites especially useful and efficient for cation
40、elimination or to achieve control of their concentration in water. Ammonium can be used as a quality standard to determine the Cation Exchange Capacity (CEC) of a natural zeolite. The total CEC shall be not less than 1,2 mg of ammonium per gram zeolite. 7 Test methods 7.1 Sampling Prepare the labora
41、tory sample(s) required by the relevant procedures described in EN 12902. 7.2 Analysis 7.2.1 Particle size distribution The particle size distribution shall be determined in accordance with EN 12902. 7.2.2 Bulk density loose The bulk density loose shall be determined in accordance with EN 12902. 7.2
42、.3 Mass loss at 150 C It is assumed that water is the only material present in the natural zeolite that is volatile at this temperature. The mass loss shall be determined by the method for water content, heating to 150 C, in accordance with EN 12902. 7.2.4 Precision - repeatability limit The absolut
43、e difference between two single test results, obtained under repeatability conditions, shall not exceed the repeatability limit, r, in more than 1 in 20 cases. 107,0 Xr = (1)where X1is the measured value. 7.2.5 Ignition loss at 650 C 7.2.5.1 Principle Heat the sample to constant mass at 650 C. It is
44、 assumed that water, including chemically bound water and carbon dioxide produced from carbonates, are the only materials present in natural zeolite that are volatile at this temperature. At 650 C, the loss of water is practically complete. BS EN 16070:2014EN 16070:2014 (E) 9 7.2.5.2 Apparatus Ordin
45、ary laboratory apparatus and glassware together with the following. 7.2.5.2.1 Muffle furnace, capable of being controlled at (650 25) C. 7.2.5.2.2 High temperature metal or ceramic crucible with lid. 7.2.5.2.3 Desiccator. 7.2.5.2.4 Analytical balance, having an accuracy of 0,1 mg. 7.2.5.3 Procedure
46、Ignite the crucible and the lid (7.2.5.2.2) in the muffle furnace at (650 25) C for 1 h. Place the crucible and the lid in the desiccator, cool to room temperature and weigh to the nearest 0,1 mg; note the mass m0. Place a 5 g to 10 g sample of natural zeolite into the pre-ignited crucible. Close th
47、e crucible and weigh immediately to the nearest 0,5 mg (m1). Remove the lid and place the crucible and lid in the muffle furnace at (650 25) C and leave for 3 h. Place the crucible in the desiccator, cover it with the lid and allow to cool to room temperature. When cool, weigh to the nearest 0,5 mg
48、(m2). 7.2.5.4 Expression of results The ignition loss, X2, expressed as a percentage mass fraction of dried product, is given by the formula: )()(10001212mmmmX= (2) where m0is the mass, in grams, of the empty crucible and lid; m1is the mass, in grams, of the crucible and lid plus the sample; m2is th
49、e mass, in grams, of the crucible and lid plus the ignited sample. 7.2.5.5 Precision - repeatability limit The absolute difference between two single test results, obtained under repeatability conditions, shall not exceed the repeatability limit, r, in more than 1 in 20 cases. 2070 Xr = , (3) 7.2.6 Capacity 7.2.6.1 Principle A sample of the zeolite is added to an ammonium chloride solution and the decrease of ammonium in the solution is determined after two hours. It is assumed that the ammonium capacity is a measure of the over
