Method for treating a desizing waste stream

Details Method for treating a desizing waste stream Method for treating a desizing waste stream

1978-07-07

1980-05-13

Hart, Charles N.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

8138, 210 49, 210 56, 210 22D, C02B 120, C02C 502

Patent

active

042027454

ABSTRACT:
A dispersed synthetic polymeric organic size is efficiently recovered as a material of low salt content from an aqueous desizing waste stream by combining the stream with a solution of an inoganic salt under high shear mixing conditions to a final salt concentration greater than about four percent, thereby precipitating the dispersed polymeric size. The aqueous phase remaining can be subjected to electrodialysis to produce a concentrated salt brine and an aqueous solution low in salt content.

REFERENCES:
patent: 3960485 (1976-06-01), Fantl et al.
patent: 3986951 (1976-10-01), Fremont
patent: 4066541 (1978-01-01), Sando et al.
patent: 4106900 (1978-08-01), Perkins
King, Separation Processes, McGraw Hill, 1971, pp. 26-31.
"Elvanol Polyvinyl Alcohols", (DuPont), 1947.

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