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Use of Sodium Aluminate as a Coagulant at Council Bluffs
Author(s) -
Rew Myron E.
Publication year - 1960
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1960.tb00563.x
Subject(s) - alum , sodium aluminate , lime , aluminate , sodium , waste management , pulp and paper industry , chemistry , environmental science , materials science , metallurgy , engineering , aluminium , cement
This article discusses the use of new sodium aluminate in conjunction with lime‐soda‐ash softening at the Council Bluffs treatment plant. It has proved successful and has several advantages over the use of alum, including: well defined coagulant requirements that are simple to control; although the cost of 1 ppm sodium aluminate is equivalent to the cost of 3.68 ppm alum, the smaller dosage requirements of sodium aluminate make it more economical than alum; lime requirements are smaller for alkali and magnesium reduction; soda‐ash requirements were substantially reduced, resulting in significant cash savings; and, filter beds stay in better condition.