PROCESS FOR PURIFYING AND REUSING SURFACTANT-CONTAINING WASTE WATERS

World Intellectual Property Organization Patent

APP PUB NO WO-1995024362-A1
SERIAL NO

PCTDE9500241

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Abstract

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Waste water from a laundry (1) is collected in a storage container (3), fluffs and textile sheddings are separated through filtering sieves (2). The volume of the container is set so that it may store the amount of waste water produced for example during two days. The waste water is supplied to a bioreactor (4) that works in aerobic conditions. Air is led into the bioreactor (4) at its lower end (5), establishing aerobic conditions therein. The biologically conditioned water leaves the bioreactor (4) at the top end (6) of the column-shaped bioreactor (4) and is supplied to an active coal column that acts as an adsorber (7). The adsorptively purified water leaves the adsorber (7) packed with active coal through the duct (8), is collected in a storage container (9) and if required is returned through duct (10) to the laundry, if required after 5 to 20 % fresh water are added.

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Patent Owner(s)

Patent OwnerAddress
BUCK CHEM TECH WERKEDEGERMAN HERRENBERG

International Classification(s)

Inventor(s)

Inventor Name Address
SCHWARZ RALF HEIDELBERG
HILLEMANN DORIS W-4800 BIELEFELD
ROHBECK HARTMUT D-16303 SCHWEDT
KNEIST KARIN D-16303 SCHWEDT
LERCHE ELKE D-16303 SCHWEDT

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