A filter element of a rotating disc filter including an internal space thereof that is limited by one or more perforated and profiled filter plates and is connected to a vacuum source. Efficiency should herein be increased in that the outside of the filter plates that faces away from the internal space has a plurality of elevations, whose cross section is round or elongated and/or at least one filter plate on the outside facing away from internal space has a plurality of elevations of different shapes and/or sizes.

A filter element of a rotating disc filter including an internal space thereof that is limited by one or more perforated and profiled filter plates and is connected to a vacuum source. Efficiency should herein be increased in that the outside of the filter plates that faces away from the internal space has a plurality of elevations, whose cross section is round or elongated and/or at least one filter plate on the outside facing away from internal space has a plurality of elevations of different shapes and/or sizes.

The present invention relates to a fabric disc filter having a structure for preventing damage to a filter panel. In this regard, an object of the present invention is to provide a fabric disc filter having a structure for preventing damage to filter panel, being capable of preventing the filter panel attached to the filter panel from being torn or being disconnected from the filter frame in the washing process of suctioning and removing foreign matter. To accomplish this object, the present invention provides a fabric disc filter having a structure for preventing damage to filter panel, the fabric disc filter including: a rotary drum; and a plurality of filter segments arranged on an outer circumferential surface of the rotary drum, wherein each of the filter segments includes: a segment frame that is partially open so as to enable inlet of a fluid therethrough, and being configured to discharge the inlet fluid to the rotary drum; a filter frame assembled to the segment frame so as to be positioned on the fluid inlet side of the segment frame; a filter panel provided in the filter frame so as to filter foreign matter in the fluid flowing therethrough; and a rod-shaped stopper provided in the filter panel so as to distribute a load applied to the filter panel in a washing process of the filter panel and couple the filter panel to the filter frame or the segment frame.

The present invention relates to a fabric disc filter having a structure for preventing damage to a filter panel. In this regard, an object of the present invention is to provide a fabric disc filter having a structure for preventing damage to filter panel, being capable of preventing the filter panel attached to the filter panel from being torn or being disconnected from the filter frame in the washing process of suctioning and removing foreign matter. To accomplish this object, the present invention provides a fabric disc filter having a structure for preventing damage to filter panel, the fabric disc filter including: a rotary drum; and a plurality of filter segments arranged on an outer circumferential surface of the rotary drum, wherein each of the filter segments includes: a segment frame that is partially open so as to enable inlet of a fluid therethrough, and being configured to discharge the inlet fluid to the rotary drum; a filter frame assembled to the segment frame so as to be positioned on the fluid inlet side of the segment frame; a filter panel provided in the filter frame so as to filter foreign matter in the fluid flowing therethrough; and a rod-shaped stopper provided in the filter panel so as to distribute a load applied to the filter panel in a washing process of the filter panel and couple the filter panel to the filter frame or the segment frame.

According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.

According to various aspects and embodiments, a system and method for two-stage filtration is provided. The system includes an inlet fluidly connectable with wastewater, a first stage filter assembly that is fluidly connectable with the inlet and has a rotary drum with a filter surface configured for radially inward fluid flow, a second stage filter assembly that is fluidly connectable with the first stage filter and has a plurality of filter discs configured for radially outward fluid flow, and an outlet fluidly connectable with filtrate generated by the second stage disc filter assembly.

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

A filter element for a filter apparatus includes at least one filter member and a frame member arranged to support the at least one filter member in such a manner that an internal cavity is formed. The filter member includes a permeable membrane layer which has a first filter surface for receiving a pressure and directed towards an internal cavity arranged in-side the filter element, and a second filter surface for receiving solid particles filtered from a feed. The filter member forms a capillary filter.

A filter element for a filter apparatus includes at least one filter member and a frame member arranged to support the at least one filter member in such a manner that an internal cavity is formed. The filter member includes a permeable membrane layer which has a first filter surface for receiving a pressure and directed towards an internal cavity arranged in-side the filter element, and a second filter surface for receiving solid particles filtered from a feed. The filter member forms a capillary filter.