Mosshydro as

Aage Bjorn Andersen

Jason Dale

Kingsley Iwu

A method of applying a treatment to a surface of an open body having a volume within an interior of the open body comprises; providing an inner structure () shaped to complement the shape of the interior of the open body and to fill a major portion of the volume or a major portion of a width of the interior of the open body; positioning the inner structure () within the open body in order to form a treatment fluid inner volume comprising an inner space () confronting an inner surface within the interior of the open body; and introducing a treatment fluid into the treatment fluid inner volume to thereby modify the inner surface of the open body by applying the treatment using the treatment fluid. Optionally, the method includes providing a tank () shaped to complement and contain the open body; positioning the open body within the tank () in order to form a treatment fluid outer volume comprising an outer space confronting the outer surface of the open body; and introducing the treatment fluid into the treatment fluid outer volume to thereby modify the outer surface of the open body by applying the treatment using the treatment fluid.

Method and system for treating a surface

The present invention relates to a filter arrangement comprising a plurality of elongate hollow filtration elements, each containing a back-washing mechanism. The back-washing mechanisms comprise at least one debris receiving portion having a cross-section corresponding to the cross-section of the hollow filtration element.

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Oslo, Norway

Aage Bjorn Andersen