1、 ANSI/AWWA B302-10 (Revision of ANSI/AWWA B302-05) AWWA Standard Effective date: Dec. 1, 2010. First edition approved by AWWA Board of Directors July 15, 1949. This edition approved June 20, 2010. Approved by American National Standards Institute Oct. 25, 2010. 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 WaterAmmonium Sulfate Copyright 2011 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is an American Wa
3、ter 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 by the use
4、r 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 standards is entir
5、ely 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 service.
6、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 notice. Americ
7、an 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 Standard do
8、es 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 cautioned to
9、 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 National Standard
10、s. 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 to reaffir
11、m, 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 York, NY 1003
12、6; (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 excerpts or quota
13、tions for review purposes, without the written permission of the publisher. Copyright 2010 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 Disinfectants, which developed a
14、nd approved this stan- dard, had the following personnel at the time of approval: Clifford L. McLain, Chair General Interest Members M.P. Chaulk, Halifax Regional Municipality, Canada (AWWA) D.J. Gates, Citrus Heights, Calif. (AWWA) M.C. Graves, HDR Engineering, Austin, Texas (AWWA) H. Johnson, Camp
15、 Dresser however, some states require food-grade material for use in potable water treatment. Depending on its source, ammonium sulfate material has a tendency to cake and arc when stored in bulk. This can be prevented by the addition of a small amount of amorphous silica (0.060.1 percent), a type o
16、f fused silica. For safety precautions, refer to material safety data sheets (MSDS) available from the supplier or manufacturer. I.B. History. The first edition of this standard was prepared by the AWWA Water Purification Division. It was approved as tentative on July 15, 1949, and made standard on
17、May 15, 1953, with the designation of AWWA B400-53. The second edition was prepared by AWWA Committee 7400P and was approved on Jan. 27, 1964, with the designation of AWWA B302-64. The third and fourth editions were prepared by the AWWA Standards Committee on Taste and Odor Control Chemicals and wer
18、e approved on Jan. 25, 1981, and June 22, 1986, respectively. The fifth edition was prepared by the AWWA Standards Committee on Disinfectants and approved on June 17, 1995. The * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2011 American Wat
19、er Works Association. All Rights Reserved. viii sixth edition, ANSI/AWWA B302-00, was approved by the AWWA Board of Directors on June 11, 2000. ANSI/AWWA B302-05 was approved on Jan. 16, 2005. This edition was approved on June 20, 2010. I.C. Acceptance. In May 1985, the US Environmental Protection A
20、gency (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 indirect drinking water additives. Other members of the original consortium included the American Water
21、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 the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, au
22、thority 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 state. To evaluate the health effects of products and drinking water additives from such products, stat
23、e and local agencies may use various references, including two standards developed under the direction of NSF, NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. Various certification organizations may be involved in certif
24、ying products in accor- dance with NSF/ANSI 60. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Accreditation of certi- fication organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and E
25、valuation 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 contaminant level (MCL). The MALs of an unspecified list of “unregulated contaminants” are based on toxicity testing guidelines (noncarcinog
26、ens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA B302 addresses additives requirements in Sec. 4.3.4 of the standard. The transfer of contaminants from chemicals to processed water or to residual so
27、lids is becoming a problem of greater concern. The language in Sec. 4.3.4 is a recommenda- tion only for direct additives used in the treatment of potable water to be certified by * Water Research Foundation, 6666 W. Quincy Avenue, Denver, CO 80235. Persons outside the United States should contact t
28、he appropriate authority having jurisdiction. NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105. Copyright 2011 American Water Works Association. All Rights Reserved. ix an accredited certification organization in accordance with NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effect
29、s. However, users of the standard may opt to make this certification a requirement for the product. Users of this standard should also consult the appropriate state or local agency having jurisdiction in order to 1. Determine additives requirements, including applicable standards. 2. Determine the s
30、tatus of certifications by parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. This standard has no applicable information for this section. III. Use of This Standard. It is the respons
31、ibility 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 purchaser. 1. Standard usedthat is, AN
32、SI/AWWA AWWA B302, Standard for Ammonium Sulfate, of latest revision. 2. Quantity of ammonium sulfate required. 3. Whether compliance with NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, is required. 4. Details of other federal, state or provincial, and local requirements (Sec. 4.1).
33、5. Whether the ammonium sulfate shall contain an anticaking agent (Sec. 4.2.2). 6. Whether optional markings will be required (Sec. 6.1.2). 7. Method of packaging and shipping required (Sec. 6.2). 8. An affidavit of compliance or certified analysis, or both, if required (Sec. 6.3). 9. Whether the pu
34、rchaser 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 the purchasers tests of representative samples, conducted in accordance with Sec. 5.2 demonstrate that the pr
35、oduct meets the standard. Failure to meet the standard or the absence of, or irregularities in, seals may be sufficient cause to reject a shipment. 10. Whether alternative security measures have been adopted to replace or aug- ment the security measures set out in Sec. 6.2.3 and 6.2.4. III.B. Modifi
36、cation to Standard. Any modification of the provisions, definitions, or terminology in this standard must be provided by the purchaser. Copyright 2011 American Water Works Association. All Rights Reserved. x IV. Major Revisions. Major changes made to the standard in this revision include the followi
37、ng: 1. Inclusion of a requirement for compliance with the Safe Drinking Water Act and other federal regulations (Sec. 4.1). 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 Engi
38、neering and Technical Services at 303.794.7711, FAX at 303.795.7603, write to the group at 6666 West Quincy Avenue, Denver, CO 80235- 3098, or e-mail the group at standardsawwa.org. Copyright 2011 American Water Works Association. All Rights Reserved. AWWA Standard 1 ANSI/AWWA B302-10 (Revision of A
39、NSI/AWWA B302-05) Ammonium Sulfate SECTION 1: GENERAL Sec. 1.1 Scope This standard describes ammonium sulfate, (NH 4 ) 2 SO 4 , for use in the treat- ment of potable water, wastewater, and reclaimed water. Sec. 1.2 Purpose The purpose of this standard is to provide the minimum requirements for ammon
40、ium sulfate, including physical, chemical, sampling, packaging, shipping, and testing requirements. Sec. 1.3 Application This standard can be referenced in documents for purchasing and receiv- ing ammonium sulfate and can be used as a guide for testing the physical and chemical properties of ammonium sulfate samples. The stipulations of this standard apply when this document has been referenced and then only to ammonium sulfate used in the treatment of potable water, wastewater, and reclaimed water. Copyright 2011 American Water Works Association. All Rights Reserved.
