AWWA B507-2016 Phosphoric Acid (First Edition).pdf
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1、AWWA Standard SM Phosphoric Acid Effective date: Aug. 1, 2016. This first edition approved by AWWA Board of Directors Jan. 16, 2016. Approved by American National Standards Institute Mar. 9, 2016. ANSI/AWWA B507-16 (First Edition) Copyright 2016 American Water Works Association. All Rights Reserved.
2、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 administrative information normally contained in specifications. The AWWA standards usually con
3、tain 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 constitute endorsement of any product or product type, nor does AWWA test, certify, or approve
4、 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 standards are intended to represent a consensus of the water industry that the product descr
5、ibed will provide satisfactory ser- vice. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the Official Notice section of Journal American Water Works Association. The action becomes effective on the first day of the month following the m
6、onth 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 provisions. An American National Standard is intended as a guide to aid the manufactur
7、er, 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, purchasing, or using products, processes, or procedures not conforming to the stan
8、dard. 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 on their own responsibility in advertising and promotional materials or on tags
9、 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 indicates completion of the ANSI approval process. This American National Standard m
10、ay 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 publication. Purchasers of American National Standards may receive current information on all standards by calling or writing
11、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: 978-1-62576-145-3 eISBN-13, electronic: 978-1-61300-370-1DOI: http:/dx.doi.org/10.12999/AWWA.B507.16 All rights reserved. No part of this publicat
12、ion 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 review purposes, without the written permission of the publisher. Copyright 2016
13、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 electronic or photocopied, is illegal and hinders AWWAs mission to support the wat
14、er community. This AWWA content is the product of thousands of Copyright 2016 American Water Works Association. All Rights Reserved.iii Committee Personnel The AWWA Standards Committee on Scale and Corrosion-Control Chemicals, which reviewed and approved this standard, had the following personnel at
15、 the time of approval: Robert A. Ryder, Chair General Interest Members J.H. Bambei Jr.,* Bambei Engineering Services, Arvada, Colo. (AWWA) M.S. McFadden, HDR Engineering Inc., Denver, Colo. (AWWA) N.E. McTigue, EE & T Inc., Newport News, Va. (AWWA) D. Orozco, Robert Cole & Associates, Engineers, Saf
16、ety Harbor, Fla. (AWWA) S.J. Posavec,* Standards Group Liaison, AWWA, Denver, Colo. (AWWA) R.A. Ryder, Kennedy/Jenks Consultants, San Francisco, Calif. (AWWA) R.D. Vaidya, Chastain Skillman Inc., Lakeland, Fla. (AWWA) Producer Members H.T. Belcher Jr., Corrtrac Systems Corporation, Currituck, N.C. (
17、AWWA) R. Hartsock, Occidental Chemical Corp., Dallas, Texas (AWWA) C.P. Principi, Carus Corporation, Belmont, N.C. (AWWA) User Members J.D. Musinski, Village of Arlington Heights, Arlington Heights, Ill. (AWWA) R.M. Powell, Pinellas County Utilities, Largo, Fla. (AWWA) Y. Zhang, Long Beach Water Dep
18、artment, Long Beach, Calif. (AWWA) * Liaison, nonvoting Copyright 2016 American Water Works Association. All Rights Reserved.This page intentionally blank. Copyright 2016 American Water Works Association. All Rights Reserved.v Contents All AWWA standards follow the general format indicated subsequen
19、tly. 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 . viii I.C Acceptance . ix II Special Issues. x II.A Storage and Handling Precautions x II.B Wastewater Discharge . xii III Use of This Standa
20、rd . xii III.A Purchaser Options and Alternatives . xii III.B Modification to Standard . xiii IV Major Revisions xiii V Comments . xiii Standard 1 General 1.1 Scope 1 1.2 Purpose . 1 1.3 Application 1 2 References 1 3 Definitions . 2 4 Requirements 4.1 Materials . 3 4.2 Chemical Requirements 3 4.3 I
21、mpurities 3 5 Verification 5.1 Sampling . 4 5.2 Test Procedures . 4 5.3 Notice of Nonconformance . 6 6 Delivery 6.1 Marking 6 6.2 Packaging and Shipping 7 6.3 Affidavit of Compliance or Certified Analysis . 8 Table 1 Sample Size Determination for Orthophosphate Analysis 5 Copyright 2016 American Wat
22、er Works Association. All Rights Reserved.This page intentionally blank. Copyright 2016 American Water Works Association. All Rights Reserved.vii Foreword This foreword is for information only and is not a part of ANSI*/AWWA B507. I. Introduction. I.A. Background. Phosphate chemicals are among the f
23、ew recognized chemical substances that can be safely and effectively used as a corrosion inhibitor in potable water. Several forms of phosphate inhibitors are available, one of which is phosphoric acid (H 3 PO 4 , ortho-phosphoric acid, white phosphoric acid). Commercial- or technical-grade phosphor
24、ic acid is a manufactured product principally obtained by the addition of sulfuric acid to phosphate rock that is mostly mined in Florida, Tennessee, and the West in the United States. Food-grade phosphoric acid is generally produced by the electric-furnace method. The reaction: Ca 3 (PO 4 ) 2 + 3H
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