AWWA B503-2017 Sodium Tripolyphosphate.pdf

1、AWWA Standard SM Sodium Tripolyphosphate Effective date: Oct. 1, 2017. First edition approved by AWWA Board of Directors June 25, 1978. This edition approved June 11, 2017. Approved by American National Standards Institute June 19, 2017. ANSI/AWWA B503-17 (Revision of ANSI/AWWA B503-11) Copyright 20

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12、ngoing product development. Unauthorized distribution, either electronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of ISBN-13, print: 978-1-62576-257-3 eISBN-13, electronic: 978-1-61300-444-9 DOI:http:/dx.doi.or

13、g/10.12999/AWWA.B503.17 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 review purpo

14、ses, without the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USAiii Committee Personnel The AWWA Standards Committee on Scale and Corrosion-Control Chemicals, which reviewed and approved this standard, had the following personnel at the time of

15、approval: Robert A. Ryder, Chair General Interest Members E. Leung,* California State Water Board, Richmond, Calif. (AWWA) M.S. McFadden, HDR Engineering Inc., Denver, Colo. (AWWA) N.E. McTigue, EE write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standardsawwa.o

16、rg. Copyright 2017 American Water Works Association. All Rights Reserved. This page intentionally blank.1 AWWA Standard ANSI/AWWA B503-17 (Revision of ANSI/AWWA B503-11) Sodium Tripolyphosphate SECTION 1: GENERAL Sec. 1.1 Scope This standard describes sodium tripolyphosphate for use in the treatment

17、 of potable water, wastewater, and reclaimed water. Sec. 1.2 Purpose The purpose of this standard is to provide purchasers, manufacturers, and suppliers with minimum requirements for sodium tripolyphosphate (mate- rial), including physical, chemical, sampling, packaging, shipping, and testing requir

18、ements. Sec. 1.3 Application This standard can be referenced in documents for purchasing and receiving sodium tripolyphosphate and can be used as a guide for testing the physical and chemical properties of sodium tripolyphosphate samples. The stipulations of this standard apply when this document ha

19、s been referenced and only to sodium tri- polyphosphate used in the treatment of potable water, wastewater, and reclaimed water. Copyright 2017 American Water Works Association. All Rights Reserved. 2 AWWA B503-17 SECTION 2: REFERENCES This standard references the following documents. In their lates

20、t editions, they form a part of this standard to the extent specified within the standard. In any case of conflict, the requirements of this standard shall prevail. APHA,* AWWA, and WEF Standard Methods for the Examination of Water and Wastewater. ASTM E11Standard Specification for Woven Wire Test S

21、ieve Cloth and Test Sieves. NSF /ANSI 60Drinking Water Treatment ChemicalsHealth Effects. SECTION 3: DEFINITIONS The following definitions shall apply in this standard: 1. Day: A day is defined as a 24-hour period. 2. Manufacturer: The party that manufactures, fabricates, or produces materials or pr

22、oducts. 3. Potable water: Water that is safe and satisfactory for drinking and cooking. 4. Purchaser: The person, company, or organization that purchases any materials or work to be performed. 5. Reclaimed water: Wastewater that becomes suitable for beneficial use as a result of treatment. 6. Sodium

23、 tripolyphosphate: A crystalline solid that is a soluble sodium poly- phosphate containing Na 2 O and P 2 O 5in a molar ratio of approximately 1.67 Na 2 O to 1.0 P 2 O 5 . Its formula is Na 5 P 3 O 10 . 7. Supplier: The party that supplies material or services. A supplier may or may not be the manuf

24、acturer. 8. Tamper-evident packaging: Packaging having one or more indicators or barriers to entry that if breached or missing, can reasonably be expected to provide * American Public Health Association, 800 I Street, NW, Washington, DC 20001. Water Environment Federation, 601 Wythe Street, Alexandr

25、ia, VA 22314. ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2017 American Water Works Association. All Rights Reserved.