Veolia Water Solutions & Technologies Support

Hydrotech Nils-ake Persson Aktiebolag

Ake Ralvert

Per Larsson

Emil Svensson

Anders Mohlin

Ake Danielsson

A disc filter disposed around a drum for filtering water. The disc filter includes a frame structure and a plurality of filter segments arranged around the drum and secured to the support. Each filter segment includes a filter frame having first and second portions and filter material integrated with the first and second portions of the filter frame through an injection moulding process.

Method for making a filter segment for a disc filter

A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members.

Device and method for cleaning a filter cloth

A rotary disk filter comprises a rotatable drum (,) and at least one disk-shaped filter member (,), which on the outside of the drum extends outwards in the transverse direction of the drum. The filter member (,) has a filter support unit (,) and a filter portion (,) supported thereby. A liquid duct (,) extends from the drum (,) through the filter member (,) and out through the filter portion (,). The filter portion is formed of at least one filter segment (,) which comprises a filter frame (,) and a filter cloth (,) expanded by the frame. The filter segment (,) is detachably secured to the filter support unit.

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Hasslehlom, Sweden

Ake Ralvert