A water filtration and disinfection device comprises a water basin having an inlet for receiving water from a source. A sidestream treatment device is provided for treating water from the water basin, and the sidestream treatment device comprises a plurality of filtration or disinfection mechanisms for acting on water within the sidestream treatment device. A feed conduit extends between the water basin and the sidestream treatment device for feeding water from the water basin to the sidestream and a return conduit extends from the sidestream treatment device to the water basin for returning at least a part of the water to the water basin.

The present invention provides a system and methods for filtering fluid using filter papers, stationary paper, cloth sheets or any other porous material. In one embodiment, the present invention uses the lateral flow direction along the porous sheets, instead of conventional vertical flow direction, for the removal of bacteria and particle contamination in the range from nanometers to millimeters. The pore sizes in the filter media along the lateral direction are modulated by controlling the compression of the porous sheets, instead of conventionally designing filters with different pore sizes. The lateral flow fluid filter system is scalable simply by increasing the feed area, feed length, and the number of porous sheets. The invention presents a universal fluid filtration system for wide range of applications such as water purification, food processing, chemical industry, oil and gas industry, and biological applications.

A method for manufacturing wastewater filtration plates uses a flowable composition including pre-ceramic raw material. The flowable composition is extruded to form a thin plate preform. Carbon-containing material is included in the flowable composition and/or added to the surface of the thin plate perform during or after extrusion thereof. The carbon-containing material is preformed carbon filaments or carbon-fiber precursor material. The thin plate preform is subjected to elevated temperatures to convert the pre-ceramic raw material into porous ceramic with carbon filaments embedded therein or disposed on the surface of the finished ceramic plate.

The present invention is a self-regenerating biofilter. The biofilter tank receives untreated water through an intake inlet, filters it through a filtration mass and expels purified water through an output outlet. The filtration mass includes gravel and activated carbon layers separated by a mesh screen. A compressed air line is located below the mesh screen. Periodically, the biofilter self-cleans by opening a flush valve that expels a flush water stream carrying debris. The biofilter self-regenerates by periodically stopping filtration for a time, allowing biological matter left on the activated carbon to degrade into biomass. Periodically, the biofilter removes and flushes out biomass by application of water or a combination of air and water.

Provided is a water-purification cartridge to be replaceably accommodated in an accommodating portion of a water purifier. The cartridge includes activated carbon that removes impurities from water, forms, within the water purifier, a raw water flow path through which raw water flows downstream without passing through the activated carbon and a water purification flow path through which raw water flows downstream while passing through the activated carbon, and further includes a buffer portion that is disposed, within the water purifier, at a position upstream of flow path switching valves for selecting discharge from the raw water flow path or discharge from the water purification flow path and downstream of the activated carbon and that cuts off a water hammer propagating from the flow path switching valves to the activated carbon.

A modular distribution assembly comprises a top plate and a bottom plate, each of the top plate and the bottom plate comprises a plurality of recesses. A plurality of support members are slidably coupled to each of the top plate and the bottom plate, each support member of the plurality of support members comprising a protrusion on each of opposing sides thereof, each protrusion slidably coupled to a corresponding recess of the top plate and a corresponding recess of the bottom plate. Related assemblies comprising the modular distribution assembly and related methods of forming the modular distribution assembly and the assembly are disclosed.

A method for refilling an aquifer includes establishing an air extraction well into the aquifer. The aquifer includes a water table of groundwater. A vacuum pump is coupled in flow communication to the air extraction well. The vacuum pump is then activated to remove air from the aquifer, thereby reducing a subsurface air pressure and facilitating refilling the aquifer with groundwater.

The present invention relates to a filtration device adapted for removably installing to a container, comprising a first housing portion, a second housing portion coupled to the first housing portion, and a filter element assembly constructed as a replaceable cartridge. The filter element assembly comprising an enclosure defining a compartment therein, a first filter media situated upstream the compartment, and a second filter media disposed within the compartment. The enclosure is formed from a fluid permeable material and is structurally supported by a support member situated within the compartment and upstream the second filter media, the support member is provided with a deflector, such that at least a portion of fluid that has passed through the first filter media is directed away from a circumferential side of the enclosure before entering the second filter media. The present invention also discloses a water filtration pitcher comprising the filtration device.

Systems and methods to control colonization, amplification and/or growth of waterborne aerobic heterotrophic bacteria within potable water plumbing of a premises are provided, the premises having potable water plumbing having at least one point of use within the premises, the potable water plumbing being adapted to receive a potable water supply from a municipal water source. The systems and methods to control colonization, amplification, and/or growth of waterborne aerobic heterotrophic bacteria within cooling towers and evaporative condensers, recirculates system water through a deoxygenation device to reduce dissolved oxygen levels and prevent bacterial respiration within the heat exchanger and pressurized lines.

A filtered drinking straw for providing on demand filtered drinking water is presented herein. The straw includes an elongated body defining a first end, a second end and an internal passage disposed there between. At least one filter is positioned within the internal passage of the body for reducing an amount of impurities that may be contained in the fluid as the fluid flows there through. The filter may include a core with a mix of granulated materials such as activated granulated carbon, chlorine grain, and zeolite. One or more retention structures may also be provided for retaining the filter within the body of the straw. The retention structure(s) include one or more internal projections, a mouth cap and/or end cap.