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Patent Searching and Data


Title:
WATER FILTRATION PROCESS
Document Type and Number:
WIPO Patent Application WO/2014/170423
Kind Code:
A3
Abstract:
Filtration processes, especially for water filtration wherein a liquid permeates an asymmetric polymer membrane, are effectively carried out using membranes equipped within organic particles of zinc oxide, or a composite comprising one oxide selected from zinc oxide, aluminum oxide, titanium oxide, silicium oxide, zirconium oxide, and a metal and/or further metal oxide. These particles are largely removed by cleaning operations using chemically enhanced backwash. The processes show improved permeate flux, improved membrane stability, and permit reduced maintenance intervals of filter modules.

Inventors:
MALISZ JACEK (DE)
VOSS HARTWIG (DE)
HEIJNEN MARTIN (DE)
MENOZZI EDOARDO (CH)
NOZARI SAMIRA (DE)
WEISER JÜRGEN (DE)
Application Number:
PCT/EP2014/057868
Publication Date:
December 04, 2014
Filing Date:
April 17, 2014
Export Citation:
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Assignee:
BASF SE (DE)
International Classes:
B01D65/02; B01D67/00; B01D69/14; B01D71/02
Domestic Patent References:
WO2010031877A12010-03-25
Foreign References:
US20130004454A12013-01-03
EP2492000A12012-08-29
US20120251868A12012-10-04
US20110024355A12011-02-03
US5102917A1992-04-07
Attorney, Agent or Firm:
UPSCHULTE, Manfred (IP DepartmentP.O. Box, Basel, CH)
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