1、 AWWA Standard SM Online Chlorine Analyzer Operation and Maintenance Effective date: Oct. 1, 2015. First edition approved by AWWA Board of Directors June 14, 2009. This edition approved June 7, 2015. Approved by American National Standards Institute April 15, 2015. ANSI/AWWA C670-15 (Revision of ANS
2、I/AWWA C670-09) Copyright 2015 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements and do not contain all of the engineering and administr
3、ative information normally contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA pub- lication of a standard does not constitu
4、te endorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or code of any governmental authority. AWWA standa
5、rds are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed in the Official Notice section of Journal - American Water Works Association.
6、 The action becomes effective on the first day of the month fol- lowing the month of Journal - American Water Works Association publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisi
7、ons. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether that person has ap - proved the standard or not, from manufacturing, marketing, pur
8、chasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encour - aged to state
9、on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. Caution n oti Ce : The American National Standards Institute (ANSI) approval date on the front cover of this standard indic
10、ates completion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of ANSI approval. Purchasers of American National
11、Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; 212.642.4900; or emailing infoansi.org. ISBN-13, print: 978-1-62576-107-1 eISBN-13, electronic: 978-1-61300-343-5DOI: htt
12、p:/dx.doi.org/10.12999/AWWA.C670.15 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or quotations for
13、review purposes, without the written permission of the publisher. Copyright 2015 by American Water Works Association Printed in USA hours of work by your fellow water professionals. Revenue from the sales of this AWWA material supports ongoing product development. Unauthorized distribution, either e
14、lectronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of Copyright 2015 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Standards Committee on Online Monitoring, which revie
15、wed and approved this standard, had the following personnel at the time of approval: Darryl Green, Chair General Interest Members T.A. Pajor, City of Wichita, Wichita, Kan. (AWWA) E.S. Ralph,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) W.J. Soucie, Central Lake Company Water Agency, Lake
16、 Bluff, Ill. (AWWA) C.D. Tona, City of Redding, Redding, Calif. (AWWA) R. Vaidya, Jones Edmunds, Tampa, Fla. (AWWA) Producer Members J. Evans, Chemtrac Systems Inc., Norcross, Ga. (AWWA) B.G. LaBelle, GF Piping Systems, Irvine, Calif. (AWWA) K.C. Morgan,* Standards Council Liaison, Town of Gilbert,
17、Gilbert, Ariz. (AWWA) D. Page, PDA Security Solutions Inc., Greer, S.C. (AWWA) M. Sadar, Hach Company, Loveland, Colo. (AWWA) User Members D. Green, Jackson Energy Authority, Jackson, Tenn. (AWWA) M.E. Richardson, Cape Fear Public Utility Authority, Wilmington, N.C. (AWWA) T.M. Scribner, City of Wes
18、tminster, Broomfield, Colo. (AWWA) R. Sparks, City Utilities of Springfield, Springfield, Mo. (AWWA) * Liaison, nonvoting Copyright 2015 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2015 American Water Works Association. All Rights Reserved. v Conte
19、nts All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Foreword I Introduction vii I.A Background. vii I.B History vii I.C Acceptance vii II Special Issues. . ix II.A Information on the Appl
20、ication of This Standard . ix III Use of This Standard ix III.A Purchaser Options and Alternatives ix III.B Modification to Standard . ix IV Major Revisions ix V Comments . ix Standard 1 General 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 2 2 References 2 3 Definitions . 3 4 Requirements 4.1 Princip
21、les of Operation 5 4.2 Sensor Systems 6 4.3 Reagents and Electrolytes 7 4.4 Sample Collection System . 8 4.5 Electrical System . 9 4.6 Sampling Techniques 10 4.7 Analyzer Performance . 11 4.8 Calibration Techniques . 12 5 Verification 5.1 Instrument Verification . 14 5.2 Record Keeping . 14 6 Delive
22、ry . 15 Appendix A Additional Resources . 17 Copyright 2015 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2015 American Water Works Association. All Rights Reserved. vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA C
23、670. I. Introduction. I.A. Background. This standard describes online chlorine analyzer operation and maintenance (O write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standardsawwa.org. Copyright 2015 American Water Works Association. All Rights Reserved. This pa
24、ge intentionally blank. Copyright 2015 American Water Works Association. All Rights Reserved. 1 AWWA Standard Online Chlorine Analyzer Operation and Maintenance SECTION 1: GENERAL Sec. 1.1 Scope This standard describes online chlorine analyzer operation and maintenance (O&M) when the online chlorine
25、 analyzer is used in the treatment and monitoring of potable water, reclaimed water, or wastewater. Sec. 1.2 Purpose Continuous chlorine residual monitoring is used for two primary purposes: process control and regulatory compliance. Process control implies that the reason for testing the chlorine c
26、ontent of water is primarily to determine how well a pro- cess is working (e.g., how consistent the chlorine residual is in effluent from a flash mixer, how much chlorine is removed from disinfected water, etc.), to control chlo- rine feed equipment, and to ensure appropriate chlorination of the fin
27、al product. The rate of ammonia application may be controlled by the residual from the chlorine analyzer to maintain an acceptable chloramine speciation. Process control may also imply analyzing residual chlorine content in distribution or transmission systems. A sudden decrease in measured chlorine residual may be indicative of malfunctioning equipment, system failure, groundwater intrusion, or introduction of some chlorine- consuming contaminants. ANSI/AWWA C670-15 (Revision of ANSI/AWWA C670-09) Copyright 2015 American Water Works Association. All Rights Reserved.
