AWWA B503-2011 Sodium Tripolyphosphate.pdf

1、 ANSI/AWWA B503-11 (Revision of ANSI/AWWA B503-05) AWWA Standard Effective date: June 1, 2011. First edition approved by AWWA Board of Directors Jan. 25, 1978. This edition approved Jan. 23, 2011. Approved by American National Standards Institute April 8, 2011. 6666 West Quincy Avenue Advocacy Denve

2、r, CO 80235-3098 Communications T 800.926.7337 Conferences www.awwa.org Education and TrainingScience and TechnologySections The Authoritative Resource on Safe WaterSodium Tripolyphosphate SM Copyright 2011 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is an A

3、merican 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 specifi- cations. The AWWA standards usually contain options that must be evaluated

4、by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standard

5、s is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory

6、 service. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official noti

7、ce. 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 manufacturer, the consumer, and the general public. The existence of an American National S

8、tandard does not in any respect preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. Ameri- can National Standards are subject to periodic review, and users are ca

9、utioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American Nationa

10、l 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 may be revised or withdrawn at any time. ANSI procedures require that action be taken

11、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 the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New Yor

12、k, NY 10036; (212) 642-4900, or e-mailing infoansi.org. 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 excerpt

13、s or quotations for review purposes, without the written permission of the publisher. Copyright 2011 by American Water Works Association Printed in USA Copyright 2011 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Standards Committee on Scale and Corrosion Co

14、ntrol Chemicals, which reviewed and approved this standard, had the following personnel at the time of approval: Robert A. Ryder, Chair General Interest Members J.H. Bambei Jr.,* Denver Water, Denver, Colo. (AWWA) M.P. Chaulk, CBCL Limited Consultants Ltd., Halifax Regional Municipality, N.S. (AWWA)

15、 M.S. McFadden, HDR Engineering Inc., Bellevue, Wash. (AWWA) D. Orozco, Cole & Associates Engineers, Safety Harbor, Fla. (AWWA) R.A. Ryder, Kennedy/Jenks Consultants, San Francisco, Calif. (AWWA) S.J. Posavec,* Standards Group Liaison, AWWA, Denver, Colo. (AWWA) R. Vaidya, Camp Dresser & McKee, Tamp

16、a, Fla. (AWWA) Producer Members H.T. Belcher Jr., Corrtrac Systems Corporation, Currituck, N.C. (AWWA) C.P. Principi, Carus Corporation, Belmont, N.C. (AWWA) V.J. Verdone, Pristine Water Solutions Inc., Waukegan, Ill. (AWWA) Y. Zhang, DXV Water Technologies Inc., Tustin, Calif. (AWWA) User Members E

17、.J. Kiefer, North Shore Water Commission, Milwaukee, Wis. (AWWA) R.M. Powell, Pinellas County Utilities, Largo, Fla. (AWWA) J.C. Thurrott, City of Daytona Beach, Daytona Beach, Fla. (AWWA) * Liaison, nonvoting Copyright 2011 American Water Works Association. All Rights Reserved. This page intentiona

18、lly blank. Copyright 2011 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. Foreword I Introduction vii I.A Background . vii I.B History vii I.

19、C Acceptance vii II Special Issues viii II.A Storage and Handling Precautions . viii 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 1 2 Re

20、ferences 2 3 Definitions . 3 4 Requirements 4.1 Physical Requirements . 3 4.2 Chemical Requirements 4 4.3 Impurities 5 5 Verification 5.1 Sampling . 5 5.2 Test Procedures . 6 5.3 Notice of Nonconformance . 9 6 Delivery 6.1 Marking 9 6.2 Packaging and Shipping 9 6.3 Affidavit of Compliance or Certifi

21、ed Analysis 10 Table 1 Approximate Bulk Density of Granular Sodium Tripolyphosphate . 4 SEC. PAGESEC. PAGE Copyright 2011 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2011 American Water Works Association. All Rights Reserved. vii Foreword This fore

22、word is for information only and is not a part of ANSI*/AWWA B503. I. Introduction. I.A. Background. Sodium tripolyphosphate (Na 5 P 3 O 10 ) is a manufactured product obtained by combining a comparatively pure chemicalsoda ash (Na 2 CO 3 ) or caustic soda (NaOH)with phosphoric acid (H 3 PO 4 ). The

23、 resultant product is subjected to controlled conditions of heating to form a crystalline solid, which is subsequently ground and sized. Sodium tripolyphosphate is a white, solid material, commercially available in gran- ular or powder forms. The density of crushed or granular is approximately 68.7

24、lb/ft 3(approximately 1,100 KG/m 3 .) A solution of 1 lb/gal (0.12 kg/L) has a specific gravity of approximately 1.10. Refer to material safety data sheets (MSDS) available from the supplier or manufacturer for additional information. Water utilities use sodium tripolyphosphate to control scale and

25、corrosion and to treat red water. I.B. History. The first edition of ANSI/AWWA B503 was developed by the AWWA Committee on Scale and Corrosion-Control Chemicals. It was first published in 1978. Subsequent revisions were approved by the AWWA Board of Directors in 1984, 1989, 1994, 2001, and 2005. Thi

26、s edition was approved on Jan 23, 2011. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct and i

27、ndirect drinking water additives. Other members of the original consortium included the American Water Works Association Research Foundation (AwwaRF, now Water Research Foundation) and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association (AWWA) and

28、 the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, authority to regulate products for use in, or in contact with, drinking water rests with individual states. Local agencies may choose to impose requirements more stringent than those required by the s

29、tate. To evaluate the health * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Water Research Foundation, 6666 W. Quincy Avenue, Denver, CO 80235. Persons outside the United States should contact the appropriate authority having jurisdiction. Copyright 2

30、011 American Water Works Association. All Rights Reserved. viii effects of products and drinking water additives from such products, state and local agencies may use various references, including two standards developed under the direction of NSF, NSF*/ANSI 60, Drinking Water Treatment ChemicalsHeal

31、th Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. Various certification organizations may be involved in certifying products in accor- dance with NSF/ANSI 60. Individual states or local agencies have authority to accept or accredit certification organizations within their

32、jurisdiction. Accreditation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and Evaluation Procedures,” to NSF/ANSI 60 does not stipulate a maximum allowable level (MAL) of a contaminant for substances not regulated by a USEPA final maximum co

33、ntaminant level (MCL). The MALs of an unspecified list of “unregulated contaminants” are based on toxicity testing guidelines (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA B503 addres

34、ses additives requirements in Sec. 4.3 of the standard. The transfer of contaminants from chemicals to processed water or to residual solids is becoming a problem of great concern. The language in Sec. 4.3.3 is a recommenda- tion only for direct additives used in the treatment of potable water to be

35、 certified by an accredited certification organization in accordance with NSF/ANSI 60 Drinking Water Treatment ChemicalsHealth Effects. However, users of the standard may opt to make this certification a requirement for the product. Users of this standard should consult the appropriate state or loca

36、l agency having jurisdiction in order to 1. Determine additives requirements, including applicable standards. 2. Determine the status of certifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification

37、. II. Special Issues. II.A. Storage and Handling Precautions. Sodium tripolyphosphate is slightly hygroscopic and must be stored under dry conditions. Exposure to humidity produces a caked condition and accelerates reversion to orthophosphate. This results in poor flow and caking, which interferes w

38、ith the rate of dilution and effectiveness of the product. For additional information, refer to the MSDS available from the manufacturer or supplier. * NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105. Copyright 2011 American Water Works Association. All Rights Reserved. ix III. Use of Th

39、is Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchase

40、r. 1. Standard usedthat is, ANSI/AWWA B503, Sodium Tripolyphosphate, of latest revision. 2. Whether compliance with NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, is required. 3. Details of other federal, state, or provincial, and local requirements (Section 4). 4. Physical form(s) a

41、nd quantity (Sec. 4.1). 5. Specific maximum impurity content limits, if required (Sec. 4.3). 6. Whether the purchaser will reject product from containers or packaging with missing or damaged seals. The purchaser may reject product from bulk containers or packages with missing or damaged seals unless

42、 the purchasers tests of representative samples, conducted in accordance with Sec. 5.2, demonstrate that the product meets the standard. Failure to meet the standard or the absence of, or irregularities in, seals may be sufficient cause to reject a shipment. 7. Form of shipmentbulk or package, type,

43、 and size of container (Sec. 6.2.1). 8. Whether alternative security measures have been adopted to replace or augment the security measures set out in Sec. 6.2.3 and 6.2.4. 9. Affidavit of compliance, certified analysis, or both, if required (Sec. 6.3). III.B. Modification to Standard. Any modificat

44、ion of the provisions, definitions, or terminology in this standard must be provided by the purchaser. I V. Major Revisions. Major changes made to the standard in this revision include the following: 1. Inclusion of a requirement for compliance with the Safe Drinking Water Act and other federal regu

45、lations. 2. Inclusion of a requirement for tamper-evident packaging (Sec. 6.2.3 and 6.2.4). V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, FAX at 303.795.7603, write to the department at 6666 West Quincy Av

46、enue, Denver, CO 80235-3098, or e-mail at standardsawwa.org. Copyright 2011 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2011 American Water Works Association. All Rights Reserved. AWWA Standard 1 ANSI/AWWA B503-11 (Revision of ANSI/AWWA B503-05) So

47、dium Tripolyphosphate SECTION 1: GENERAL Sec. 1.1 Scope This standard describes sodium tripolyphosphate for use in the treatment 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 requir

48、ements for (material), including physical, chemical, sampling, packaging, shipping, and testing requirements. 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 proper

49、ties of sodium tripolyphosphate samples. The stipulations of this standard apply when this document has been referenced and only to sodium tri- polyphosphate used in the treatment of potable water, wastewater, and reclaimed water. Copyright 2011 American Water Works Association. All Rights Reserved. 2 AWWA B503-11 SECTION 2: REFERENCES This standard references the following documents. In their latest editions, they form a part of this standard to the extent specified within the standard. In any case of conflict, the requirements of this sta