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Measurement and modelling of organic fouling deposition in ultrafiltration by ultrasonic transfer signals and reflections
The development of a non-destructive, real-time observation technique to detect and monitor fouling during liquid separation processes is of great importance to the development of strategies to improve operating conditions. ...
Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry
An ultrasonic time-domain reflectometry (UTDR) technique has been applied to the non-invasive study of fouling in microfiltration (MF) membrane modules operating at 100kPa. The experimental results show a good correspondence ...
Ultrasonic cleaning of nylon microfiltration membranes fouled by Kraft paper mill effluent
An ultrasonic technique was successfully applied to remove fouling and recover the permeate flux of flat sheet microfiltration (MF) membranes. Three kinds of cleaning methods were used, namely: forwardflushing, ultrasonic ...
Non-invasive in situ visualisation of membrane fouling and cleaning processes in microfiltration by ultrasonic signal reflection
A better understanding of fouling-layer formation and its detection is needed in order to improve on existing cleaning techniques. An ultrasonic time-domain reflectometry (UTDR) technique has been applied to the non-invasive, ...
Flux flow and cleaning enhancement in a spiral membrane element, using continuous infrasonic backpulsing
The effect of backpulsing, into the permeate space of a 2.5 inch spiral wrap membrane, on the prevention of fouling (flux enhancement) was investigated experimentally. These experiments were performed using a 500 mg·l-1 ...
Direct monitoring of membrane fouling and cleaning during ultrafiltration using a non-invasive ultrasonic technique
An ultrasonic technique has been applied as a non-destructive, real-time, in situ measuring technique for the non-invasive study of fouling and cleaning during ultrafiltration (UF) with polysulfone (PSU) membranes. Paper ...