This standard describes sodium aluminate (Na2Al2O4) in both liquid and solid form for use in the treatment of potable water, wastewater, or reclaimed water. Sodium aluminate according to this standard is a combination of sodium oxide (Na2O) and aluminum oxide (Al2O3) with sufficient excess causticity (sodium oxide) for stabilization. It can be referenced in documents for purchasing and receiving sodium aluminate and can be used as a guide for testing the physical and chemical properties of sodium aluminate samples. The stipulations of this standard apply when this document has been referenced and then only to sodium aluminate used in the treatment of potable water, wastewater, or reclaimed water.<\/p>\n
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| 7<\/td>\n | Foreword I.A.\tBackground.\u2003Sodium aluminate (Na2Al2O4) is used to improve hardness reduction and coagulation when softening water with lime or lime and soda ash. It can also be used in conjunction with alum to improve coagulation. I.B.\tHistory.\u2003Prior to May 15, 1960, a tentative standard for sodium aluminate was designated AWWA B405-59T. On May 15, 1960, the first edition was approved. Subsequent revisions to ANSI\/AWWA B405 were prepared by the AWWA Standards Committee on Iron Salt I.C.\tAcceptance.\u2003In 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 <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | II.A.\tAdvisory Information on Product Application.\u2003Unlike many other flocculant chemicals purchased in liquid form, liquid sodium aluminate is usually purchased by weight of product including water. III.\tUse of This Standard.\u2003It 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.\tPurchaser Options and Alternatives.\u2003When purchasing sodium aluminate under the provisions of this standard, the following information should be provided by the purchaser: <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | V.\tComments.\u2003If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or e-mail at standards@awwa.org. III.B.\tModification to Standard.\u2003Any modification of the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV.\tMajor Revisions.\u2003Major changes made to the standard in this revision include the following: <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | AWWA Standard SECTION 1:\tGENERAL Sec. 1.1\tScope Sec. 1.2\tPurpose Sec. 1.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | SECTION 2:\tREFERENCES SECTION 3:\tDEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | SECTION 4:\tREQUIREMENTS Sec. 4.1\tPhysical Requirements* Sec. 4.2\tChemical Requirements <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Sec. 4.3\tImpurities\u2020 SECTION 5:\tVERIFICATION Sec. 5.1\tSampling <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Sec. 5.2\tTest Procedures <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Sec. 5.3\tNotice of Nonconformance <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | SECTION 6:\tDELIVERY Sec. 6.1\tMarking* <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Sec. 6.2\tPackaging and Shipping Sec. 6.3\tAffidavit of Compliance or Certified Analysis <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA B405-24 Sodium Aluminate<\/b><\/p>\n |