Method and system for suppression of foam of waste streams

Details Method and system for suppression of foam of waste streams Method and system for suppression of foam of waste streams

1995-05-05

1997-09-30

Walker, W. L.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210697, 210698, 202264, 202265, 252321, B01D 1904

Patent

active

056722788

ABSTRACT:
A method and a system is disclosed for the suppression of foams during the processing of streams containing waste materials. An additive is introduced into a waste stream and the waste stream is processed for a period of time at an elevated temperature and substantially atmospheric pressure. The tendency toward foam formation is suppressed by particles from the additive becoming suspended in the waste stream. The waste materials containing a substantial reduction of foam are removed from the processing system without the usual spattering and formation of sticky residue which causes fowling and frequent shutdowns of the processing system.

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Osipow, Lloyd I., Surface Chemistry, Theory and Industrial Applications, Chapter 12, "Foams," pp. 344-376, Reinhold Publishing Corporation (1962).
Perry, Robert H. and Cecil H. Chilton, Chemical Engineers' Handbook, Fifth Edition, "Gas-in-Liquid Systems," pp. 18-93--18-96 (1973).
EPA Memorandum of Sep. 30, 1991 from Sylvia Lowrance, Dir., Solid Waste to Allyn M. Davis, Dir., Region 6.

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