A filter medium layer includes filter media configured to capture suspended solids contained in a liquid to be treated and filtering aids configured to allow the suspended solids contained in the liquid to be treated to pass through the filtering aids. The filter media and the filtering aids are mixed together and the liquid to be treated is filtered by being passed through the filter media and the filtering aids as mixed together. A filter device includes the filter medium layer and a filter tank configured to accommodate the filter medium layer.

A filter is disclosed. The filter includes a vessel having at least one inlet and at least one outlet, a media bed including a plurality of media layers, an uppermost media layer of the media bed including substantially uniform and spherical glass micromedia, the plurality of media layers increasing in density from the uppermost media layer to a lowermost media layer and an air distributor configured to direct a volume of air through the plurality of media layers. A system for treating water is also disclosed. The system includes a source of water to be treated, a filter vessel as described herein, and a treated water outlet fluidically connected to a filter vessel outlet. A method of retrofitting a filter vessel as described herein is also disclosed. The method includes removing the uppermost media layer from the media bed and installing a media comprising substantially uniform and spherical glass bead micromedia into the media bed as the uppermost media layer. A method of facilitating water treatment is also disclosed. The method includes providing a filter vessel as described herein and instructing a user to connect an inlet of the filter vessel to a source of water to be treated.

A filter is disclosed. The filter includes a vessel having at least one inlet and at least one outlet, a media bed including a plurality of media layers, an uppermost media layer of the media bed including substantially uniform and spherical glass micromedia, the plurality of media layers increasing in density from the uppermost media layer to a lowermost media layer and an air distributor configured to direct a volume of air through the plurality of media layers. A system for treating water is also disclosed. The system includes a source of water to be treated, a filter vessel as described herein, and a treated water outlet fluidically connected to a filter vessel outlet. A method of retrofitting a filter vessel as described herein is also disclosed. The method includes removing the uppermost media layer from the media bed and installing a media comprising substantially uniform and spherical glass bead micromedia into the media bed as the uppermost media layer. A method of facilitating water treatment is also disclosed. The method includes providing a filter vessel as described herein and instructing a user to connect an inlet of the filter vessel to a source of water to be treated.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.

A water filter medium container includes a removable upper cover and a removable lower cover. The container includes a tube defining a filter medium compartment operative to receive a replaceable filter medium. A first containment element may be placed between the upper cover and the tube. A second containment element may be placed between the lower cover and the tube. The water filter medium container may be adapted to be placed in a water container.

A water filter medium container includes a removable upper cover and a removable lower cover. The container includes a tube defining a filter medium compartment operative to receive a replaceable filter medium. A first containment element may be placed between the upper cover and the tube. A second containment element may be placed between the lower cover and the tube. The water filter medium container may be adapted to be placed in a water container.

The disclosure relates to devices and systems for configurable, contaminat-specific water filtration and treatment. In particular, the disclosure relates to a contaminant-specific configurable and modular horizontal water filter and a water filtration system, comprising modular housings, each housing defining a plurality of reconfigurable compartments operable to accommodate contaminant-specific filtering units.

The disclosure relates to devices and systems for configurable, contaminat-specific water filtration and treatment. In particular, the disclosure relates to a contaminant-specific configurable and modular horizontal water filter and a water filtration system, comprising modular housings, each housing defining a plurality of reconfigurable compartments operable to accommodate contaminant-specific filtering units.

An aquarium filter assembly includes a transfer tube to convey aquarium liquid and a pre-filter member secured to an end of the transfer tube. The pre-filter member may include a rigid porous media basket, or it may include a micron filter of pleated media.