ISO INTERNATIONAL STANDARD 20468-1 First edition 2018-11 Guidelines for performance evaluation of treatment technologies for water reuse systems - Part 1: General Lignes directricespour I'évaluation des performances des techniques detraitement des systemesderéutilisation de I'eau Partie1:Géneralités Reference number IS0 20468-1:2018(E) ISO @ IS0 2018 IS020468-1:2018(E) COPYRIGHTPROTECTEDDOCUMENT IS02018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or IsO's member body in the country of the requester: ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122.749 0111 Fax: +41 22 749 09 47 Email:[email protected] Website: www.iso.org Published in Switzerland ii IS02018-Allrights reserved IS020468-1:2018(E) Contents Page Foreword iv Introduction. V 1 Scope. 1 2 Normativereferences .1 3 Terms,definitions and listofabbreviatedterms .1 3.1 Terms and definitions. 1 3.2 Listofabbreviatedterms 4 Concepts oftreatmenttechnology forwater reuse systems 4 4 4.1 General. 4 4.2 Treatment objective 5 4.3 Treatment technologies used in fit-for-purpose water reuse 6 5 Principles and general guidelines for performance evaluation .8 5.1 General. 8 5.2 Performance requirements 6 5.2.1 Treatmenttechnologyfunctional requirements 9 5.2.2 Treatmenttechnology non-functional requirements 9 5.2.3 Characteristics of functional and non-functional requirements in performance evaluation 10 5.3 Performance evaluation and meeting requirements .10 5.3.1 General. 10 5.3.2 Monitoring plan 11 5.4 .11 Applicationoftheguidelinestotreatmentsystems 5.4.1 Treatment system design 11 5.4.2 Treatment system configuration .11 Functional requirements .12 6 6.1 General 12 6.2 Performance evaluation procedures 12 .14 7 Non-functional requirements 7.1 Examples of performance indicators. .14 7.2 Evaluation method of environmental performance 14 7.2.1 Energyconsumption .14 7.2.2 Chemical consumption. 15 7.2.3 Amount of solid and liquid waste generated and requiring disposal .15 7.2.4 PerformanceindicatorsIntegratedconsiderations .16 7.3 Evaluationmethodofeconomicperformance .16 AnnexA (informative)Dependabilityoftreatmenttechnology .17 AnnexB (informative)Dependabilityevaluation .19 Bibliography .21 @ IS0 2018 - All rights reserved iii