ISO INTERNATIONAL STANDARD 18749 First edition 2004-02-15 Water quality Adsorption of substances on activated sludge Batch test using specific analytical methods Qualité de I'eau Adsorption des substances sur la boue activee - Essai de lot utilisant des méthodes analytiques spécifiques Reference number ISO 18749:2004(E) ISO @ ISO 2004 CopyrightInternational Organization for Standardization No reproductin or networking pemited without license from IHs Not for Resale ISO 18749:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the @ISO2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either Iso at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56· CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland CyghenatalganizatioSdadizatio @ISO2004-All rightsreserved No reproduction or networking permited without license from IHS Not for Resale ISO 18749:2004(E) Contents Page 1 Scope 1 2 Terms and definitions 1 3 Principle 2 4 Reagents and materials 2 5 Apparatus 4 6 Test environment 5 7 Procedure 5 8 Calculation 7 9 Validity of the test 9 10 Test report 9 Bibliography 10 Copyright International Organization forstandardization'ghts reserved ili No reproduction or networking permitted without license from IHS Not for Resale ISO 18749:2004(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 18749 was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 5, Biological methods. onal Organization for Standardization @ ISO 2004 - All rights reserved Not fr Resale ISO 18749:2004(E) Introduction This test is used as a screening test to determine the degree of adsorption of substances on activated sludge V No reproduction or networking permited withou license from IHs Not for Resale No reproduction or networking permitted without license from IHS Not for Resale ISO 18749:2004(E) INTERNATIONAL STANDARD Water quality Adsorption of substances on activated sludge Batch test using specific analytical methods WARNING - Activated sludge and sewage contain potentially pathogenic organisms. Take appropriate precautions when handling them. Handle with care toxic test compounds and those whose properties are unknown. 1 Scope This International Standard specifies a screening test method for the determination of the degree of adsorption The conditions described in this Internationa