0630687-A1 is referenced by 4 patents and cites 6 patents.

The present invention relates to a method of treating residues (1) coming from effluents of plants for incinerating household waste and similar waste (residues), in particular so-called fly ash coming from the electrostatic filtration treatment and/or from the residues from neutralising the flue gases by lime treatment, characterised in that the said materials (1) coming from the effluents are washed (at 11), separating, using a filter (9), on the one hand a solution (13) containing the majority of the soluble salts, principally calcium chloride, and on the other hand a filter cake (15) stripped to a large extent of the soluble salts, the washing water (11) being continuously recycled, while at the same time taking off a purge (19) which is concentrated with soluble salts.; According to the invention, the solution, rich in calcium chloride, obtained is suitable for purifying, from sulphates and phosphates, waste water, especially urban waste water.

Title
Method of treating residues from incineration plants for household waste and similar residues.
Application Number
EP19940870094 19940609
Publication Number
0630687 (A1)
Application Date
June 9, 1994
Publication Date
December 28, 1994
Inventor
De La Roche Serge Dr Sc
BE
Assignee
Sipac
BE
IPC
C04B 18/04
B09B 03/00
B03B 09/04
C04B 22/00
C04B 18/04
C02F 01/52
B03B 09/00
C04B 22/00
C04B 18/10
C02F 01/52
B03B 09/04
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