X-Flow B.v.

André Mepschen

Arie Cornelis Besemer

Elmar Van Mastrigt

A method for operation of a filtration moduleincluding a housingwith at least one filter elementpositioned therein, the filter element defining a first spacein the housing at a feeding side of its filtering surface and a second spaceat an opposite permeate side thereof, a fluid feedopening out in the first space at the feeding side of the filter element, and a permeate outletin flow communication with the second space at the permeate side of the filter element, in which the filter element is placed in an upright position. The permeate outlet is positioned at a lower end of the filter element, and a gas feedis provided opening out in the second space at said permeate side of the filter element. During filtration, pressurized gas is fed into the second space.

Filtration method for operating a filtration module with gas feed at its permeate side to prevent backflow of permeate

A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of periodate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95&#xb0; C.

Method for cleaning filter membranes

A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of peroxydisulphate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95&#xb0; C.

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Oosterhesselen, Netherlands

André Mepschen