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1、STD-AWWA BLi02-ENGL 2000 = 0783350 05LL3LiO Li20 American Water Works Association (Revision of ANSVAWWA 8402-95) ANSIIAWWA 8402-00 A W A STANDARD F O R FERROUS SULFATE Effetive dater January 1,2001. First edition approved by AUWA Board of Directors June 2, 1968. This edition approved June 11,2000. A
2、pproved by American National Standards Institute October 6,2000. AMERICAN WATER WORKS ASSOCIATION 6666 West Quincy Avenue, Denver, Colorado 80235 Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03
3、/21/2007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AWWA BqOZ-ENGL 2000 M 0783350 05LL3Lil 3b7 W A W A Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements an
4、d do not contain all of the engineering and administrative 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 define
5、d. 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 entirely voluntary. AWWA standards are intended to represent a consensus of the water supply industry that the product d
6、escribed will provide satisfactory 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 AWW
7、A publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and,pmvisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The ex
8、istence of an American National Standard does not in any respect preclude anyone, whether that person has approved the standard or not, fmm manufactur- ing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to p
9、eriodic review, and users are cautioned 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
10、with particular American National Standards. CAUTION NOTICE: 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
11、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 the American National Standards Institute, 11 W . 42nd S
12、t., New York, NY 10036; (212) 642-4900. Ail 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
13、for review purposes, without the written permission of the publisher. Copyright O 2000 by American Water Works Association Printed in USA 11 Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2
14、007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AWWA B402-ENGL 2000 0783350 0511342 2T3 Committee Personnel The AWWA Subcommittee on Fernus Sulfate-Ferric Sulfate, which developed this standard, had the following personnel at the time of approval: Brannon H
15、. Wilder, Chair T.A. Barber Jr., Coca-Cola Company, Atlanta, Ga. J.E. Brown, United Water Service, Houston, Texas D.E. Gordon, QC Corporation, Baltimore, Md. M.E. Kenney, Hobart, Ind. C.L. Payne, Synergy Production Inc., Reistentown, Md. F.E. Rowe, Boliden Intertrade Inc., Atlanta, Ga. Gene Shull, F
16、ini Enterprises, BaclifT, Texas B.H. Wilder, Atlanta, Ga. The A W A Standards Committee on Iron Salts, Aluminum Salts, and Related Coagulant Aids, which reviewed and approved this standard, had the foilowing personnel at the time of approval. Joe E. Brown, Chair Gene Shull, Vice Chair Consumer Membe
17、rs B.S. Aptowicz, Philadelphia Water Department, Philadelphia, Pa. T.A. Barber Jr., Coca-Cola Company, Atlanta, Ga. J.E. Brown, United Water Service, Houston, Texas J.P. Corless Jr., Washington Suburban Sanitary District-Water Operations, ( A W N (AWWA) (AWWA) Laurel, Md. ( A W N ( A W N (AWWA) (AWW
18、A) (AWWA) ( A W N ( A W N S.A. Dolan, United Water Delaware, Wilmington, Del. E.D. Lowther Jr., American Water Works Service Company, Voorhees, N.J. C.A. Owen, City of Tampa Water Department, Tampa, Fla. R.S. Schultz, Bloomington Water Works, Hudson, Ili. J.S. Trotter, City of Bloomhgton Utilities,
19、Bloomington, Ind. D.P. Wok, City of Wyoming Clean Water Plant, Grandville, Mich. iii Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 03:28:08 MDTNo reproduction or networking permitted
20、without license from IHS -,-,- STD-AWWA BLi02-ENGL 2000 = 0783350 0533343 33T 9 General Interest Members M.B. Alvarez, CH2M Hill, Orlando, Fla. KK Au, American Water Works Service Company, Belleville, Ill. D.T. Duke, East Liverpool, Ohio J.D. Edwards, Burgess and Niple Ltd., Columbus, Ohio J.J. Gemi
21、n, Earth Tech Inc., Kitchener, Ont. R.D. Haniger, Eaglebrook Inc., Williamsburg, Va. T.J. Lane,* Malcolm Pirnie Inc., Mahwah, N.J. J.F. Myatt,t Earth Tech Inc., London, Ont. P.J. Olson, Standards Engineer Liaison, AWWA, Denver, Colo. J.W. Patterson, J.W. Patterson Environmental Consultants, Silverth
22、orne, Colo. L.W. Vandeventer, Metcalf not more than 2.0 percent, by weight, of free sulfuric acid, expressed as H2S04; and not more than 3.0 percent, by weight, of insoluble matter. 4.2.2 Dried ferrous sulfate. Dried ferrous sulfate shall contain not less than 19.5 percent, by weight, of total solub
23、le i r o n in the heptahydrate form; not less than 29 percent, by weight, of total soluble i r o n in the monohydrate form; not more than 2 . 0 percent, by weight, of free sulfuric acid, expressed as H,SO,; and not more than 3.0 percent, by weight, of insoluble matter. Dried fermus sulfate heptahydr
24、ate may contain up to 1 percent of either calcium carbonate or bentonite to inhibit caking, however, the addition of either of these substances shall not reduce the available i r o n to less than 19.5 percent in the dried ferrous sulfate heptahydrate form. 4.2.3 Liquid ferrous sulfate. Liquid ferrou
25、s sulfate shall contain a minimum of 5.5 percent total soluble i r o n with 0.6 percent h e sulfuric acid and not more than 0.9 percent insoluble matter. For material with a higher total soluble-iron content, the free sulfuric acid and insoluble matter may be proportionally higher, if acceptable to
26、the purchaser. Sec. 4 . 3 Impurities* 4.3.1 General. The ferrous sulfate supplied according to this standard shall contain no substances in quantities capable of producing deleterious or injurious effects on the health of those consuming a water that has been properly treated with fermus sulfate. Dr
27、ied ferrous sulfate shal contain no detergent compound or sequestering agent. In addition, the ferrous sulfate supplied shall not contain any substances in quantities that will result in treated sludges that wili be designated as hazardous wastes by local, state, or federal authorities. 4.3.2 Produc
28、t certifications. Ferrous sulfate is a direct additive used in the treatment of potable water. This material should be certified as suitable for contact with or treatment of drinking water by an accredited certification organization in accordance with ANSUNSF Standard 60, Drinking Water Treatment Ch
29、emicals- Health Effects. Evaluation shall be accomplished in accordance with requirements that are no less restrictive than those listed in ANSIMSF Standard 60. Certification *See Sec. I.C. of the foreword. Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=I
30、HS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 AWWAB402-00 shall be accomplished by a certification organization accredited by the American National Standards Institute. SECTION 5: VERIFICATIO
31、N Sec. 5.1 Sampling 5 . 1 . 1 Sampling point. 5 . 1 . 2 Moist or dried ferrous sulfite. Samples shall be taken at the point of destination. If the ferrous sulfate is dried, a gross sample of at least 10 I b (4.5 kg) shall be obtained by combining individual samples obtained as follows: 5.1.2.1 For p
32、ackaged material, the number of packages closest to 5 percent of the total number shall be sampled, but no less than 5 nor more than 15 packages in any one shipment shall be sampled. Sampling of packages may be done with a sampling tube at least Y4 in. (19.1 mm) in diameter. A minimum of five equal
33、portions shall be taken at different locations within a package. 5 . 1 . 2 . 2 5.1.2.3 For bulk material, a mechanical sampling device may be used. The gross sample shd be mixed thoroughly and then divided to provide three l-lb (0.45-kg) material samples. These samples shall be stored in airtight, m
34、oistureproof glass containers; each clearly identified with a label signed by the sampler. 5 . 1 . 3 Liquid ferrous sulfate. If the ferrous sulfate is liquid, three l-pt (473-mL) samples shall be taken from each tank car or tank truck load. These material samples shall be sealed in airtight glass co
35、ntainers; each clearly identified with a label signed by the sampler. 5.1.4 Distribution of material samples. One of the three sealed material samples is for immediate use by the purchaser for testing of the shipment according to Sec. 5 . 2 . The two remaining material samples shall be retained for
36、future use according to Sec. 5.3.1, i f necessary. 5.1.5 Material sample retention. Material samples shall be retained for at least 30 days add 30 mL of phosphoric acid and 7 to 10 drops of diphenylamine barium sulfonate indicator. The total volume of the solution should be between 150 and 200 rnL.
37、2. Stannous chloride reduction method: To the solution, add 10 mL of hydrochloric acid and heat to boiling. Add the stannous chloride solution by drops until the last trace of greenish-yellow color disappears. Then add one additional drop Copyright American Water Works Association Provided by IHS un
38、der license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AWWA B402-ENGL 2000 0783350 05LL357 724 FERROUS SULFATE 7 in excess to ensure complete reduction. Cool to SOOC,
39、 add 60 mI, of deionized water, and then add, in one pouring, 20 mL of saturated mercuric chloride solution with agitation to ensure insta trivalent arsenic raises the results. 2. When potassium dichromate is used in titration, there is no fading. Back the titration with the standard ferrous solutio
40、n if possible. There is no interference from either organic substances of zinc, aluminum, manganese, nickel, cobalt, or Chromium. 5.2.6 5.2.6.1 Reagents. Test procedure for free acid. 1. Isopropyl alcohol, 99 percent. 2. Sodium hydroxide (carbonate free), 0.05N. 3. Phenolphthalein indicator. Copyrig
41、ht American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- STDqAWWA B402-ENGL 2000 0783350 0533358 bb 8 AWWAB402-00 5.2.
42、6.2 hucedure. 1. Place 8.45 g of the dried ferrous sulfate monohydrate sample, or 12.25 g of the moist or dried f e m u sulfate heptahydrate sample, or 32.5 g of the liquid ferrous suifate sample in a 500-mL glass-stoppered Erlenmeyer flask. 2. Add 100 mL of isopropyl alcohol and shake with a rotary
43、 motion for 10 min. 3. Filter through a h o c h crucible, retaining as much of the ferrous sulfate i n the f l a s k as possible. 4. Wash the residue in the f l a s k with 25-mL portions of alcohol. 5. Wash the Gooch crucible with a f i n a l 25-mL portion. 6. Titrate the filtrate with sodium hydrox
44、ide using phenolphthalein as the indicator 7. Run a blank using the same procedure and the same amount of alcohol. 8. Subtract the reading obtained on the blank from that obtained on the tzieated sample. 5.2.6.3 Calculation. % kee acid (as H2S0,) -9 (mLNaOH-blank) x (NNaOH) x 0.049 x 100 weight of s
45、ample, in grams (Sec. 5.2.6.2) (Es 3) 5.2.6.4 Sodium hydroxide correction. The amount of NaOH used in the determination includes the amount used in reacting with ferric sulfate that is taken in solution by the alcohol. If the percentage of free acid, as calculated, does not exceed the maximum set in
46、 the specifications, no correction needs to be made for the NaOH used by the ferric sulfate. If the percentage of free acid, as calculated, exceeds the amount specified, the quantity of NaOH used in the reaction with the ferric sulfate must be subtracted from the actual quantity used in titrating th
47、e alcoholic solution. This correction is determined as follows: After the titration with the NaOH is completed, evaporate the alcohol on a steam bath. Determine the amount of i r o n in the residue, either colorimetrically or gravimetrically. Then calculate the quantity of NaOH used in the reaction
48、with the i r o n as ferric iron from Eq 4 IA 0.05N NaOH - weight of i r o n . in m a m s x (2.149 NaOHkFe) 0.002g NaOWmL 0.05 N NaOH Copyright American Water Works Association Provided by IHS under license with AWWA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/21/2007 03:28:08 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-AWWA B402-ENGL 2000 m 0783350 05LL357 5T7 m FERROUSSULFATE 9 NOTE: Ferrous sulfate always contaias some femc suifate. Ferrous sulfate is insoluble in isopropyl alcohol, but ferric sulfate is slightly s