B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/34 (2006.01) B01D 53/14 (2006.01) B01D 53/22 (2006.01) B01D 53/84 (2006.01) B01D 61/00 (2006.01) B01D 61/14 (2006.01) C02F 1/26 (2006.01) C02F 3/02 (2006.01) C02F 3/12 (2006.01)
Patent
CA 2106983
ABSTRACT OF THE DISCLOSURE The invention concerns a process for cleaning exhaust air containing biodegrad- able contaminants which arc only slightly soluble in water. The contaminants are ab- sorbed by a washing liquid containing activated sludge and at least one high boiling solvent for the contaminants and are decomposed by the activated sludge. The solvent and the activated sludge are separated from at least part of the remaining washing li- quid which is then drained off. In order to reduce significantly the amount of sub- stances which are dangerous to the environment or to health in the washing liquid sep- arated off, it is proposed that part of the remaining washing liquid be separated off by membrane filtration using inorganic or hydrophilicized organic membranes. Silicone oil is a particularly suitable solvent for use in the process.
Blum Stefan
Kratz Gunther
Yueksel M. Levent
Borden Ladner Gervais Llp
Henkel Kommanditgesellschaft Auf Aktien
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