Method for monitoring the degree of fouling of a filter

Details Method for monitoring the degree of fouling of a filter Method for monitoring the degree of fouling of a filter

2007-03-15

2009-11-03

Smith, Duane (Department: 1797)

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

C210S739000, C210S791000, C073S037000

Reexamination Certificate

active

07611634

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.

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patent: 2005/0258098 (2005-11-01), Vincent et al.
patent: 19607740 (1997-09-01), None
patent: WO 01/30483 (2001-05-01), None

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