A CO.sub.2 concentration device has an adsorbent body formed from sheet material. Solid adsorbent particles are adhered onto at least a single surface of the sheet material and then the sheet material is wound onto itself or laminated in layers. The adsorbent body is divided into at least into a processing zone and a regeneration zone. CO.sub.2 is adsorbed in the processing zone when the processing zone is wet with water and a CO.sub.2 containing gas is passed through. The regeneration zone desorbs CO.sub.2 when saturated steam is passed through. Condensation heat from the steam condensing causes CO.sub.2 desorption. The solid adsorbent particles may be aligned in a linear or a staggered arrangement when the solid adsorbent particles are adhered to the sheet material to follow a gas flow and form gas introduction paths between adjacent layers of the sheet material.

A method of manufacturing a media assembly comprises winding a filter media about a center axis into a media roll and cutting the media roll along at least two cut lines and into at least two media packs of at least two media assemblies. The media roll is cut along at least one plane that is parallel to the center axis.

This disclosure generally relates to perforated filter media and coalescing filter elements utilizing perforated filter media. One example coalescing filter element is structured to separate a dispersed phase from a continuous phase of a mixture. The filter media includes a first coalescing layer. The first coalescing layer includes a first filter media. The first filter media has a plurality of pores and a first perforation. Each of the plurality of pores is smaller than the first perforation. The first perforation is formed in the first filter media and extends through the first filter media. The plurality of pores are structured to capture a portion of the dispersed phase. The first perforation is structured to facilitate the transmission of coalesced drops of the dispersed phase through the first coalescing layer such that the coalesced drops of the dispersed phase are separated from the portion of the dispersed phase captured in the first coalescing layer.

A filter for use in filtering a fluid slurry that includes particles of varying size, such as pool water including debris, is provided. The filter is in electrical communication with a sensor and includes a housing having an inlet to receive the fluid slurry, an outlet, and an internal chamber. An actuator can be coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores. The filter also includes a controller connected to the actuator that is capable of receiving a signal from the sensor and controls the actuator to change the dimension of the pores based on the signal.

A system and method for treating fluid by providing a series of concentric chambers, tanks or tubes so that a fluid flow and treatment efficiency is maximized while size, complexity and cost of manufacture and operation is reduced. In one aspect, a generally non-turbulent fluid flow is received and directed in a radial sequential direction through the series of chambers. Each chamber is configured to house a filter assembly or media that provides a level of treatment for the fluid flow while directing the fluid toward a subsequent concentric filtration chamber. The last sequential chamber directs the fluid flow toward a fluid outlet and reduces the turbulence of the flow generated during the filtration process. The system can be configured to direct the fluid flow in inward or outward radial directions according to various arrangements and during filtration or back flushing operations.

A fluid filtration assembly (FFA) includes a housing having a thickness defined between an internal surface and an external surface, the housing receiving a filter and defining an outer annular flow passage between an outer surface of the filter and the internal surface of the housing; an inlet pipe communicates with the FFA and injects a fluid into the housing to impart a centrifugal force; an outlet pipe communicates with the FFA and discharges the fluid from the housing; and a collection area disposed towards an end of the outer annular flow passage collects particulate matter from the fluid; wherein a width of the outer annular flow passage increases towards the collection area.

A fluid filtration assembly (FFA) includes a housing having a thickness defined between an internal surface and an external surface, the housing receiving a filter and defining an outer annular flow passage between an outer surface of the filter and the internal surface of the housing; an inlet pipe communicates with the FFA and injects a fluid into the housing to impart a centrifugal force; an outlet pipe communicates with the FFA and discharges the fluid from the housing; and a collection area disposed towards an end of the outer annular flow passage collects particulate matter from the fluid; wherein a width of the outer annular flow passage increases towards the collection area.

A variable pore size filter media including an upper plate, a retainer, and a support profile disposed between the upper plate and the retainer. The variable pore size filter media also includes a plurality of wire rings disposed on the support profile and longitudinally distributed within a region between the upper plate and the retainer, the plurality of wire rings being distributed in a non-contiguous manner to form a plurality of spaces therebetween. The variable pore size filter media further includes a plurality of pores defined by the plurality of spaces between the plurality of wire rings and a pore size adjustment mechanism configured to vary a respective distance between each of the plurality of wire rings to increase or decrease a respective size of each of the plurality of pores by increasing or decreasing a size of each of the plurality of spaces.

The invention described herein is that of an outdoor drain filter useful for maintaining the operability of an outdoor drain despite the accumulation of debris that would otherwise obstruct the outdoor drain, resulting in flood prevention of surrounding areas. The outdoor drain filter of the present invention is placed above and around an existing outdoor drain or may be integral with a drain cover or drain reservoir. The outdoor drain filter comprises upper and side filtration means allowing the free flow of water therethrough. The outdoor drain filter further comprises a diverter comprising at least one air vent and at least one lateral pipe that defines a maximum water level to which water will accumulate around the outdoor drain before being diverted into the drain through the diverter. The outdoor drain filter may a manufactured unit or of modular construction.

A CO.sub.2 concentration device has an adsorbent body formed from sheet material. Solid adsorbent particles are adhered onto at least a single surface of the sheet material and then the sheet material is wound onto itself or laminated in layers. The adsorbent body is divided into at least into a processing zone and a regeneration zone. CO.sub.2 is adsorbed in the processing zone when the processing zone is wet with water and a CO.sub.2 containing gas is passed through. The regeneration zone desorbs CO.sub.2 when saturated steam is passed through. Condensation heat from the steam condensing causes CO.sub.2 desorption. The solid adsorbent particles may be aligned in a linear or a staggered arrangement when the solid adsorbent particles are adhered to the sheet material to follow a gas flow and form gas introduction paths between adjacent layers of the sheet material.