ANSI AWWA B406-2006 Ferric Sulfate《硫酸铁》.pdf

1、The Authoritative Resource on Safe WaterSMANSI/AWWA B406-06(Revision of ANSI/AWWA B406-97)AWWA StandardEffective date: May 1, 2006.First edition approved by AWWA Board of Directors Jan. 23, 1961.This edition approved Feb. 12, 2006.Approved by American National Standards Institute Dec. 22, 2005.Ferri

2、c SulfateAdvocacyCommunicationsConferencesEducation and TrainingH17012 Science and TechnologySections6666 West Quincy AvenueDenver, CO 80235-3098T 800.926.7337www.awwa.orgCopyright American Water Works Association Provided by IHS under license with AWWA Not for ResaleNo reproduction or networking pe

3、rmitted without license from IHS-,-,-iiAWWA StandardThis document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standardsdescribe minimum requirements and do not contain all of the engineering and administrative information normallycontained in specification

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10、 on the front cover of this standardindicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn atany time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than fiveyears from the date of publicat

11、ion. Purchasers of American National Standards may receive current information on allstandards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York,NY 10036; (212) 642-4900.Science and TechnologyAWWA unites the entire water community by develop

12、ing and distributing authoritative scientific and technologicalknowledge. Through its members, AWWA develops industry standards for products and processes that advance publichealth and safety. AWWA also provides quality improvement programs for water and wastewater utilities.All rights reserved. No

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14、er. Copyright 2006 by American Water Works AssociationPrinted in USACopyright American Water Works Association Provided by IHS under license with AWWA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiiCommittee PersonnelThe AWWA Subcommittee on Ferric SulfateFerro

15、us Sulfate, which developed this stan-dard, had the following personnel at the time:Gene Shull, ChairT.A. Barber Jr., Coca-Cola Company, Atlanta, Ga. (AWWA)J.E. Brown, Southern Ionics Inc., Whitney, Texas (AWWA)D.E. Gordon, QC Corporation, Baltimore, Md. (AWWA)M.E. Kenney, Hobart, Ind. (AWWA)P.J. Ol

16、son,*Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA)C.L. Payne, Synergy Production Inc., Reisterstown, Md. (AWWA)G. Shull, Kemiron Inc., Houston, Texas (AWWA)B.H. Wilder, Daytona Beach, Fla. (AWWA)The AWWA Standards Committee on Iron Salts, Aluminum Salts, and Related CoagulantAids, which rev

17、iewed and approved this standard, had the following personnel at the timeof approval:J.P. Corless, ChairGene Shull, Vice ChairGeneral Interest MembersM.B. Alvarez, CH2M Hill, Orlando, Fla. (AWWA)K.K. Au, Greeley it shall not exceed 0.5 percent on a basis of 10.0 percent ferriciron in liquid ferric s

18、ulfate unless otherwise specified by the purchaser.4.2.3 Water-insoluble matter. Not more than 6.5 percent of the dry ferricsulfate shall be insoluble in water and not more than 0.1 percent shall be insoluble inliquid ferric sulfate unless agreed on by the purchaser.4.2.4 Free acid. Dry ferric sulfa

19、te shall contain free acid, but it shall notexceed 4.5 percent as H2SO4. Liquid ferric sulfate shall contain not more than3.5 percent free acidity as H2SO4or as agreed on by the supplier and purchaser.4.2.5 Chlorides. Not more than 10 ppm chloride shall be present per 1 percentof ferric iron content

20、 at 100F (38C).Sec. 4.3 Impurities4.3.1 General impurities. Ferric sulfate conforming to this standard shallcontain no substances in quantities capable of producing deleterious or injuriouseffects on the health of those consuming water that has been properly treated withferric sulfate.4.3.2 Product

21、certifications. Ferric sulfate is a direct additive used in thetreatment of potable water. This material should be certified as suitable for contactwith or treatment of drinking water by an accredited certification organization inaccordance with NSF/ANSI 60. Evaluation shall be accomplished in accor

22、dance withrequirements that are no less restrictive than those listed in NSF/ANSI 60.Certification shall be accomplished by a certification organization accredited by theAmerican National Standards Institute.Copyright American Water Works Association Provided by IHS under license with AWWA Not for R

23、esaleNo reproduction or networking permitted without license from IHS-,-,-4 AWWA B406-06SECTION 5: VERIFICATIONSec. 5.1 Sampling5.1.1 Sampling point. Samples shall be taken at the point of destination.5.1.2 Dry ferric sulfate.5.1.2.1 If dry ferric sulfate is handled by conveyor or elevator, a mechan

24、icalarrangement for sampling may be used.5.1.2.2 If the material is packaged, 5 percent of the packages shall be sampled,but no fewer than 5 packages and no more than 15 packages shall be sampled fromany one shipment. No sample shall be taken from a broken package.5.1.2.3 Dry ferric sulfate shall be

25、 sampled using a sampling tube that is at least in. (19 mm) in diameter.5.1.2.4 The total gross sample, which shall weigh at least 10 lb (5 kg), shall bemixed thoroughly and divided to provide three 1-lb (0.45-kg) samples. The samplesshall be sealed in airtight, glass containers. Each sample contain

26、er shall be labeled toidentify it, and the label shall be signed by the sampler.5.1.3 Liquid ferric sulfate.5.1.3.1 Equal portions shall be taken at five equally spaced intervals duringthe unloading of a tank truck or railroad car. Where small quantities are purchased insmall containers, at least 5

27、percent of the containers shall be sampled, but not lessthan 5 and no more than 15 containers shall be sampled from any one shipment.The total gross sample shall be at least 2 qt (1.9 L).5.1.3.2 The total gross sample shall be thoroughly mixed, and three 1-pt(0.5-L) containers filled and retained. C

28、ontainers shall be polyethylene plasticcontainers or glass containers having a plastic, corrosion-resistant cap. Each samplecontainer shall be labeled to identify it, and the label shall be signed by the sampler.5.1.4 Distribution of samples. One of the three sealed samples is for immedi-ate use by

29、the purchaser for testing of the shipment in accordance with Sec. 5. Thetwo remaining samples shall be retained for future use in accordance with Sec. 5.10,if necessary.5.1.5 Sample retention. Samples shall be retained for at least 30 days after thedate of receipt of the shipment before they are dis

30、carded.Copyright American Water Works Association Provided by IHS under license with AWWA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FERRIC SULFATE 5Sec. 5.2 Laboratory Examination5.2.1 Completion of testing. The purchasers laboratory examination of oneof the

31、three samples collected in accordance with Sec. 5.1 shall be completed within10 days after receipt of the shipment.5.2.2 Test procedures. Methods of testing ferric sulfate shall conform to theprocedures set forth in this standard. Alternative procedures may be used only withthe written approval of t

32、he purchaser.Sec. 5.3 Laboratory Samples5.3.1 Sample preparation and sieve analysis for dry ferric sulfate. Riffle or quar-ter the sample to provide two samples: one sample of 150200 g for physical screensize determination, and a second sample of approximately 100 g for chemicalanalyses. After thoro

33、ugh mixing, store the quartered 100-g sample in an airtight glasscontainer and weigh it out rapidly to avoid a change in moisture content. Grindapproximately 50 g of the 100-g sample to such a size that all of it passes through aNo. 80 US Standard Sieve. Place this ground sample in a tightly closed

34、bottle or jaruntil analysis.Quantitatively transfer the 150200-g sample to an 8-in. diameter US Standardset of sieves composed of a No. 3 sieve, a No. 4 sieve, and a pan. Sieve by lateral andvertical motion accompanied by jarring action. Continue for about 5 min or until anadditional 3 min of sievin

35、g time fails to change the results of any sieve fraction by0.5 percent of the total sample weight.5.3.2 Sample preparation for liquid ferric sulfate. Weigh 20 g (0.001 g) ofthe sample collected in accordance with Sec. 5.1.3 and transfer it into a 100-mLvolumetric flask. Dilute to the volume mark wit

36、h deionized water and mix.Sec. 5.4 Moisture Content of Dry Ferric Sulfate5.4.1 Procedure. Weigh 10 g (0.001 g) of the ground sample in apreweighed porcelain dish. Dry for 5 hr in an oven at 230F (110C). Allow thesample to cool in a desiccator and then weigh it again.5.4.2 Calculation.percent moistur

37、eloss in weight, in grams 100weight of sample, in grams-=Copyright American Water Works Association Provided by IHS under license with AWWA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-6 AWWA B406-06Sec. 5.5 Test Procedure for Insoluble Matter5.5.1 Procedure for

38、 insoluble matter in dry ferric sulfate. Weigh 10 g (0.001 g)of the ground sample (Sec. 5.3.1) and transfer it into a 250-mL beaker. Add 100 mLof 70F (21C) distilled water and stir for 30 min. Filter the contents of the beakerusing a Fisher Filtrator, or equivalent, with preweighed Whatman No. 42 fi

39、lter paper,or equivalent, into a 400-mL filter flask and wash the residue with four successive20-mL portions of distilled water poured into the same flask. Transfer the contents ofthe filter flask quantitatively to a 500-mL volumetric flask. Add distilled water tomake up volume, and mix. Save this f

40、iltrate for other analyses. Dry the filter paperwith the residue to constant weight in an oven at 217F (103C). Cool and weigh (to0.001 g) again. Report results as percent insoluble matter on an oven-dry basis,using the percent moisture from Sec. 5.4 and the formula in Sec. 5.5.1.1.*5.5.1.1 Calculati

41、on for ferric sulfate.5.5.2 Procedure for insoluble matter in liquid ferric sulfate. After thoroughlyshaking the 100-mL sample prepared in Sec. 5.3.2, filter it using a Fisher Filtrator, orequivalent, equipped with preweighed Whatman No. 42 filter paper, or equivalent.Remove the filtrate and save it

42、 for further analyses, then thoroughly wash the residueon the filter with distilled water. Discard this wash water. Dry the filter paper withresidue to constant weight; cool and reweigh (accurate to 0.001 g).5.5.2.1 Calculation for liquid ferric sulfate.Sec. 5.6 Test Procedure for Soluble Ferrous Ir

43、on5.6.1 Reagents.5.6.1.1 0.01N ceric sulfate. To prepare, add slowly while stirring 30 mL ofconcentrated sulfuric acid (H2SO4) to 500 mL of water; dissolve 5.28 g of cericsulfate Ce(HSO4)4 in this acid solution and dilute to 1 L (standardized withelectrolytic-grade iron wire, arsenic oxide, or sodiu

44、m oxalate).*Actual weight of sample used in Sec. 5.5.1 to 0.001 g.Sec. 5.3.2.percent water-insoluble matterweight of residue, in grams 10010.0 g*100 percent moisture100-=percent water-insoluble matter by weightweight of residue, in grams 100weight of sample,in grams-=Copyright American Water Works A

45、ssociation Provided by IHS under license with AWWA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FERRIC SULFATE 75.6.1.2 Orthophenanthroline indicator solution. To prepare, dissolve 0.5 gof orthophenanthroline in 50 mL of ethyl alcohol and dilute to 100 mL.5.6.1.

46、3 1:1 hydrochloric acid. To prepare 1:1 hydrochloric acid, carefullyadd equal parts of concentrated hydrochloric acid to distilled water.5.6.2 Procedure for dry ferric sulfate. To a 10-mL aliquot of the filtrate fromSec. 5.5.1, plus 80 mL of distilled water, add 5 mL of hydrochloric acid. Titrate wi

47、th0.01N ceric sulfate, using orthophenanthroline indicator (use a 10-mL micro-burette). Run a blank on 50 mL of water using the same amount of indicatorsolution. Report results as percent water-soluble ferrous iron on an oven-dry basis,using the percent moisture from Sec. 5.4 and the formula in Sec.

48、 5.6.2.1.*5.6.2.1 Calculation for dry ferric sulfate.5.6.3 Procedure for liquid ferric sulfate. To a 10-mL aliquot of the solution inSec. 5.3.2, add 80 mL of distilled water and 5 mL of 1:1 hydrochloric acid. Titratewith 0.01N ceric sulfate, using orthophenanthroline indicator (use a 10-mLmicroburette). Run a blank on 50 mL of water using the same amount of indicatorsolution. Report results as percent water-