Alum pellets

Details Alum pellets Alum pellets

2005-11-01

2005-11-01

Hruskoci, Peter A. (Department: 1724)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S683000, C210S714000, C210S728000, C210S747300, C210S906000, C252S176000, C252S181000

Reexamination Certificate

active

06960303

ABSTRACT:
Compositions including pellets of alum, a smectite mineral material and optionally sodium or calcium carbonate that can be delivered to a phosphate impoundment located at the bottom of a body of water at the bottom. The pellets of alum, smectite mineral material and optionally sodium or calcium carbonate are dropped through the body of water so that the alum is released when the pellet reaches the bottom of the impoundment thereby treating the phosphates.

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Foreign search report from a related counterpart application dated May 21, 2004.
Abstract No. JP 54041924 A dated Apr. 3, 1979, entitled Lightweight Inorganic Aggregate Made by Thermal Foaming—from Alum, Slaked Lime, Alkali Borate, Phosphate or Aluminum Hydroxide Added to Siliceous Material, Bentonite and Alkali Silicate.

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