Abstract: A method of filtering a fluid wherein after filtering a contaminated fluid, which causes the formation of a filter cake, a substantially non-contaminated fluid is fed through the filter cake and filter at varying flux or at varying driving force. At the same time the necessary driving force or the obtained flux, respectively, are measured. The measured value and the respective value setting are compared with at least one standard set of data and on the basis of this comparison the fouling status of the fluid to be filtered, the filter and the filter cake is determined. The method makes it possible to accurately determine characteristics of a fluid to be filtered. This may be realized by simply varying the flux and measuring the driving force at different flux values, or vice versa.
Type:
Grant
Filed:
March 15, 2007
Date of Patent:
November 3, 2009
Assignee:
NORIT Membraan Technologie B.V.
Inventors:
Harry Futselaar, Bastiaan Blankert, Bernardus Henricus Louis Betlem, Matthias Wessling
Abstract: A method of filtering a fluid wherein after filtering a contaminated fluid, which causes the formation of a filter cake, a substantially non-contaminated fluid is fed through the filter cake and filter at varying flux or at varying driving force. At the same time the necessary driving force or the obtained flux, respectively, are measured. The measured value and the respective value setting are compared with at least one standard set of data and on the basis of this comparison the fouling status of the fluid to be filtered, the filter and the filter cake is determined. The method makes it possible to accurately determine characteristics of a fluid to be filtered. This may be realized by simply varying the flux and measuring the driving force at different flux values, or vice versa.
Type:
Application
Filed:
March 15, 2007
Publication date:
October 18, 2007
Applicant:
NORIT Membraan Technologie B.V.
Inventors:
Harry Futselaar, Bastiaan Blankert, Bernardus Betlem, Matthias Wessling