A pocket filter adapted for filtering grease and other liquid aerosols has first and second depth loading media with a separator that prevents wicking thereby to extend filter life and capacity. The first layer is also of lower efficiency than the second to distribute loading and further extend life. The spacer may be of unwoven fiber mesh. Various feature of the pocket filter ensure free flow of effluent streams.

A pocket filter adapted for filtering grease and other liquid aerosols has first and second depth loading media with a separator that prevents wicking thereby to extend filter life and capacity. The first layer is also of lower efficiency than the second to distribute loading and further extend life. The spacer may be of unwoven fiber mesh. Various feature of the pocket filter ensure free flow of effluent streams.

A method of filtering a wastewater stream and a filter media comprising a non-woven felt material for filtering particles from a wastewater stream wherein the non-woven felt material filter is positioned within a wastewater stream from a washing machine and wherein the filter is positioned downstream of a washing machine wastewater drainage outlet. The filter media may be configured for use with a gravity based wastewater filter mountable to a surface external to the washing machine or may be configured for use with a motorized wastewater filter mountable to a surface external to the washing machine.

A method of filtering a wastewater stream and a filter media comprising a non-woven felt material for filtering particles from a wastewater stream wherein the non-woven felt material filter is positioned within a wastewater stream from a washing machine and wherein the filter is positioned downstream of a washing machine wastewater drainage outlet. The filter media may be configured for use with a gravity based wastewater filter mountable to a surface external to the washing machine or may be configured for use with a motorized wastewater filter mountable to a surface external to the washing machine.

Provided is a porous membrane which has a high water permeability performance, a high blocking performance, and a durability performance against loads of long-term and high operation pressures, which are suitable for filtering applications. The porous membrane includes one surface to be on a side of a filtrate; and the other surface to be on a side of a liquid to be filtered, wherein a surface pore diameter index of the one surface is 2.5 or more, the surface pore diameter index being determined by dividing a pore diameter in a top surface by a pore diameter in a second top surface.

Provided is a porous membrane which has a high water permeability performance, a high blocking performance, and a durability performance against loads of long-term and high operation pressures, which are suitable for filtering applications. The porous membrane includes one surface to be on a side of a filtrate; and the other surface to be on a side of a liquid to be filtered, wherein a surface pore diameter index of the one surface is 2.5 or more, the surface pore diameter index being determined by dividing a pore diameter in a top surface by a pore diameter in a second top surface.

In an embodiment, the present invention provides a filter element including: a bellows in the shape of a zig-zag having pleat walls and a pleat ridge, edges of the pleat walls and the pleat ridge being provided with edge elements; and a frame element being assigned to at least one end pleat of the bellows. The frame element surrounds the end pleat so as to form a positive fit on both sides, the frame element being fixed to the edge elements.

In an embodiment, the present invention provides a filter element including: a bellows in the shape of a zig-zag having pleat walls and a pleat ridge, edges of the pleat walls and the pleat ridge being provided with edge elements; and a frame element being assigned to at least one end pleat of the bellows. The frame element surrounds the end pleat so as to form a positive fit on both sides, the frame element being fixed to the edge elements.

A filter module for the separation of overspray from overspray-laden cabin air of coating plants, in particular of painting plants, having a filter housing which delimits a filter chamber through which overspray-laden cabin air can be conducted in a main flow direction. A plurality of separation elements composed of a separation material which is permeable to the cabin air is arranged in the filter chamber such that a flow labyrinth is formed between the separation elements. A separation device and a plant for coating articles having such a filter module is also provided.

A filter module for the separation of overspray from overspray-laden cabin air of coating plants, in particular of painting plants, having a filter housing which delimits a filter chamber through which overspray-laden cabin air can be conducted in a main flow direction. A plurality of separation elements composed of a separation material which is permeable to the cabin air is arranged in the filter chamber such that a flow labyrinth is formed between the separation elements. A separation device and a plant for coating articles having such a filter module is also provided.