1、May 2015 Translation by DIN-Sprachendienst.English price group 19No part of this translation 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 13
2、.030.01!%Bj7“2317120www.din.deDDIN EN 14429Characterization of waste Leaching behaviour test Influence of pH on leaching with initial acid/base addition;English version EN 14429:2015,English translation of DIN EN 14429:2015-05Charakterisierung von Abfllen Untersuchung des Elutionsverhaltens Einfluss
3、 des pH-Wertes auf die Elution unter vorheriger Sure/Base-Zugabe;Englische Fassung EN 14429:2015,Englische bersetzung von DIN EN 14429:2015-05Caractrisation des dchets Essais de comportement la lixiviation Influence du pH sur la lixiviation avec ajout initial dacide/base;Version anglaise EN 14429:20
4、15,Traduction anglaise de DIN EN 14429:2015-05SupersedesDIN CEN/TS 14429:2006-01www.beuth.deDocument comprises 56 pagesIn case of doubt, the German-language original shall be considered authoritative.04.15 DIN EN 14429:2015-05 2 A comma is used as the decimal marker. National foreword This document
5、(EN 14429:2015) has been prepared by Technical Committee CEN/TC 292 “Characterization of waste” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-02-05
6、 UA Elutionsverfahren of NA 119-01-02 AA Abfall- und Bodenuntersuchung. The present document serves to determine the pH-dependent amounts of mobilizable substances after the addition of an acid or base, and to determine the buffer capacity of the solids. When using the method described here, there i
7、s a risk of over titration, which can lead to false values regarding the mobility of substances and incorrect buffer capacities. Therefore, this method is not given any importance in terms of practical application. In Germany, the Deponieverordnung (DepV) (German Landfill Ordinance) stipulates that
8、the buffer capacity (acid neutralization capacity, or “ANC”) is to be determined in accordance with LAGA EW 98 Richtlinie fr das Vorgehen bei physikalischen, chemischen Untersuchungen von Abfllen, verunreinigten Bden und Materialien aus dem Altlastenbereich, 2002 edition, modified in 2007, published
9、 by the Bund/Lnder-Arbeitsgemeinschaft Abfall (LAGA) (Federal/State Waste Working Committee), which is a working committee of the Umweltministerkonferenz (UMK) (Conference of Environmental Ministers). The method described in this standard cannot be used in place of the above-mentioned method of dete
10、rmining the buffer capacity of waste that has been agreed by the German Lnder, and is therefore not for practical application. The DIN Standards corresponding to the International Standards referred to in this document are as follows, whereby EN ISO Standards are only listed below if these have not
11、been published as DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 ISO 5725-2:1994 DIN ISO 5725-2:2002-12 Amendments This standard differs from DIN CEN/TS 14429:2006-01 as follows: a) performance characteristics are now given in Clause 12 b) Annex E “Repeatability and reproducibil
12、ity data” has been added; c) the standard has been editorially revised. Previous editions DIN CEN/TS 14429: 2006-01 DIN EN 14429:2015-05 3 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specification and test methods DIN ISO 5725-2:2002-12, Accuracy (t
13、rueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method DIN EN 14429:2015-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14429 March 2015 ICS
14、 13.030.01 Supersedes CEN/TS 14429:2005English Version Characterization of waste - Leaching behaviour test - Influence of pH on leaching with initial acid/base addition Caractrisation des dchets - Essais de comportement la lixiviation - Influence du pH sur la lixiviation avec ajout initial dacide/ba
15、se Charakterisierung von Abfllen - Untersuchung des Elutionsverhaltens - Einfluss des pH-Wertes auf die Elution unter vorheriger Sure/Base-Zugabe This European Standard was approved by CEN on 26 December 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
16、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 standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standa
17、rd 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 and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the natio
18、nal standards 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, Slov
19、akia, 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 2015 CEN All rights of exploitation in any form and by any mean
20、s reserved worldwide for CEN national Members. Ref. No. EN 14429:2015 EEN 14429:2015 (E) 2 Contents Page Foreword 4 Introduction .5 1 Scope 7 2 Normative references 7 3 Terms and definitions .7 4 Symbols and abbreviations 8 5 Principle 9 6 Reagents .9 7 Equipment . 10 7.1 General . 10 7.2 Laboratory
21、 equipment 10 8 Sample preparation 11 8.1 Laboratory sample 11 8.2 Preparation of the test sample 11 8.3 Determination of dry residue . 11 8.4 Preparation of the test portion 12 9 Procedure 12 9.1 Contact time 12 9.2 pH range 12 9.3 Leaching test . 13 9.3.1 General . 13 9.3.2 Preparation of leachant
22、 13 9.3.3 Leaching procedure . 14 9.4 Natural pH 15 10 Eluate treatment, storage and analysis 16 11 Blank test . 16 12 Performance characteristics . 16 13 Test report . 17 Annex A (informative) Example of a data sheet 19 Annex B (informative) Operation and uses of the test Influence of pH on the lea
23、ching behaviour . 20 B.1 Clarification of the two modes of operation of the test: influence of pH on the leaching behaviour . 20 B.2 Expression of results . 22 B.3 Scope and limits of the application field of the test 22 B.3.1 Remarks on the use of pH dependence test results to assess the effects of
24、 ageing . 22 B.3.2 Examples of test result use and considerations on scope 23 B.4 Example: Identification of the sensitivity of leaching to pH over the environmentally relevant pH range 24 Annex C (informative) Preliminary determination of the acid/base consumption 25 C.1 General . 25 DIN EN 14429:2
25、015-05 EN 14429:2015 (E) 3 C.2 Titration procedure to estimate the ANC and the BNC . 25 C.2.1 Reagents and laboratory devices 25 C.2.2 Test portion 25 C.2.3 Procedure . 25 C.2.4 Expression of results 27 C.3 Arbitrary division of the maximum acid/base consumption for the extreme pH values . 27 C.3.1
26、General . 27 C.3.2 Reagents and laboratory devices 27 C.3.3 Test portion 27 C.3.4 Procedure . 27 C.3.5 Expression of results 28 Annex D (informative) Examples of acid and base neutralization capacities for waste, soil, sediment and construction materials 30 D.1 Examples of acid and base neutralizati
27、on capacities . 30 D.2 Use of acid and base neutralization capacity data 32 Annex E (informative) Repeatability and reproducibility data 33 E.1 Materials used in the interlaboratory comparison study 33 E.2 Interlaboratory comparison results . 33 Bibliography 51 DIN EN 14429:2015-05 EN 14429:2015 (E)
28、 4 Foreword This document (EN 14429:2015) has been prepared by Technical Committee CEN/TC 292 “Characterization of waste”, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a
29、t the latest by September 2015, and conflicting national standards shall be withdrawn at the latest by September 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 identifyin
30、g any or all such patent rights. This document supersedes CEN/TS 14429:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. The following significant technical changes have been implemented in this new edition of the t
31、ext: the status of the document has been changed from a CEN/TS into a European Standard; performance data has been added (see Annex E). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
32、stria, 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, Swe
33、den, Switzerland, Turkey and the United Kingdom. DIN EN 14429:2015-05 EN 14429:2015 (E) 5 Introduction This document has been developed primarily to support the requirements for leaching behaviour testing within EU and EFTA countries. This document specifies a test method to determine the influence
34、of pH on the leachability of inorganic constituents from waste materials. For the complete characterization of the leaching behaviour of waste under specified conditions the application of other test methods is required (see EN 12920). Anyone dealing with waste and sludge analysis should be aware of
35、 the typical risks of that kind of material irrespective of the parameter to be determined. Waste and sludge samples can contain hazardous (e.g. toxic, reactive, flammable, infectious) substances, which can be liable to biological and/or chemical reaction. Consequently these samples should be handle
36、d with special care. Gases which can be produced by microbiological or chemical activity are potentially flammable and will pressurize sealed bottles. Bursting bottles are likely to result in hazardous shrapnel, dust and/or aerosol. National regulations will be followed with respect to all hazards a
37、ssociated with this method. In the different European countries, tests have been developed to characterize and assess the constituents which can be leached from waste materials. The release of soluble constituents upon contact with water is regarded as one of the main mechanism of release which resu
38、lts in a potential risk to the environment during life-cycle of waste materials (disposal or re-use scenario). The intent of these tests is to identify the leaching properties of waste materials. The complexity of the leaching process makes simplifications necessary. Not all of the relevant aspects
39、of leaching behaviour can be addressed in one single standard. Procedures to characterize the behaviour of waste materials can generally be divided into three steps, using different tests in relation to the objective. The following test hierarchy is taken from the Landfill Directive 1)and the Decisi
40、on on Annex II of this Directive 2)for disposal of waste. a) Basic characterization constitutes a full characterization of the waste by gathering all the necessary information for a safe management of the waste in the short and long term. Basic characterization may provide information on the waste (
41、type and origin, composition, consistency, leachability, etc.), information for understanding the behaviour of waste in the considered management scenario, comparison of waste properties against limit values, and detection of key variables (critical parameters as liquid/solid (L/S) ratios, leachant
42、composition, factors controlling leachability such as pH, redox potential, complexing capacity and physical parameters) for compliance testing and options for simplification of compliance testing. Characterization may deliver ratios between test results from basic characterization and results from s
43、implified test procedures as well as information on a suitable frequency for compliance testing. In addition to the leaching behaviour, the composition of the waste should be known or determined by testing. The tests used for basic characterization should always include those to be used for complian
44、ce testing. b) Compliance testing is used to demonstrate that the sample of today fits the population of samples tested before by basic characterization and through that, is used to carry out compliance with regulatory limit values. The compliance test should therefore always be part of the basic ch
45、aracterization program. The compliance test focuses on key variables and leaching behaviour identified by basic characterization tests. Parts of basic characterization tests can also be used for compliance purposes. 1) Council Directive 1999/31/EC of 26 April 1999 on the landfill of waste. 2) Counci
46、l Decision 2003/33/EC of 19 December 2002. DIN EN 14429:2015-05 EN 14429:2015 (E) 6 c) On-site verification tests are used as a rapid check to confirm that the waste is the same as that which has been subjected to characterization or compliance tests. On-site verification tests are not necessarily l
47、eaching tests. The test procedure described in this document is a basic characterization test and falls in category a). In this European Standard leaching is carried out at different pH values as a result of the reaction between pre-selected amounts of acid or base and test portions of the waste mat
48、erial. Size reduction is performed to facilitate approaching equilibrium. This test is different from the “pH dependence test with continuous pH control“ (pH static test, see EN 14997) in which the pH is controlled at pre-selected values over the entire testing period by continuous measurement and automatic addition of acid or base. The test is aiming at approaching equilibrium at the end of the procedure. NOTE In Annex B specific uses of both the pH dependence test with initial acid/ base addition and the pH dependen
