A water filter assembly may include a filter body having vertical side walls that defines a cavity within which one or more filter layers may be housed, the filter body further including a plurality of vertical barriers that define a plurality of flow paths that converge on an outlet hole, the vertical barriers further including a plurality of cutouts defining alternative overflow paths permitting water therethrough, and each filter layer including a plurality of vertical barriers that define a plurality of flow paths.

There is disclosed a fluid distribution system for distributing fluid from a single source to a plurality of downstream receptacles. The system has a distribution manifold with a single inlet and a plurality of outlets arrayed around a circumferential outer periphery. The outlets may be directed to the different receptacles which each have their own vent filter, or each receptacle connects back to the distribution manifold for common venting.

The present invention is directed to a one-piece cell divider for use in a filter underdrain system that supports a parous plate that supports a filter media for filtering a fluid. The one-piece cell divider includes: a divider portion; a porous plate support portion, including a flange that supports the porous plate; a support member portion, including a flange that attaches the divider to a base. A filter underdrain using a one-piece cell divider may include; at least one porous plate tor supporting the filter media for filtering a fluid, the porous plate spanning across at least one of the dividers; the at least two dividers including: one or more one-piece cell dividers; one or more multiple-piece dividers, each multiple-piece cell divider comprising a divider portion and a support member, the support member being directly under the divider portion.

An apparatus for use in a filter system for filtering water or wastewater. The apparatus preferably includes at least one underdrain lateral having at least an inner chamber, a first outer chamber and a second outer chamber. The first outer chamber and the second outer chamber are preferably in fluid communication with the inner chamber. The inner chamber, the first outer chamber and the second outer chamber are preferably formed by an inner liner and an outer liner. The outer liner is a separate piece from the inner liner and surrounds the inner liner. The inner chamber is preferably configured to simultaneously receive a liquid and a gas during a washing procedure including simultaneous use of a liquid and gas to clean a filter bed to create a liquid and gas interface in the inner chamber.

A water filtering tank comprising a housing of the water filtering tank, water inlet pipe (3) installed on the housing receiving water into the tank, water distributing sheet (2) in which the said sheet is arranged inside the tank at the height lower than the inlet pipe (3) in which the said distributing sheet receives water flow through the inlet and comprises a plurality of pores positioned throughout the said sheet, rough filtering basket (1) in which the supporting lower surface comprises a plurality of pores and the said basket comprises rough filtering materials inside which arranged in the basket at the height less than the distributing sheet (2) and receives water flow through the said water distributing sheet, filtering material basket which is arranged inside the basket at the height less than that of the rough filtering basket (1) and comprises the filtering materials arranged into multiple layers and water outlet pipe (7) installed with the housing and releases water. Characterized in that the water filtering basket comprises a siphon tube supporting base (6) which is arranged at the lower part of the housing and further comprises a water outlet standing pipe (8) vertically installed on the said base and has the height less than the height of the inlet in which water is sucked out of the housing through the lower water outlet standing pipe (8) connected with the water outlet pipe (7) when water level filled inside the housing is at the same level as that of the water outlet standing pipe (8), siphon tube (10) covering the water outlet standing pipe (8) and further comprises snock tube (11) in which is in the U-shape having one end connected with the siphon tube at the predetermined height.

The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.

There is disclosed a fluid distribution system for distributing fluid from a single source to a plurality of downstream receptacles. The system has a distribution manifold assembly with a single inlet and a plurality of outlets arrayed around a circumferential outer periphery. The outlets may be directed to the different receptacles which each have their own vent filter, or each receptacle connects back to the distribution manifold for common venting. The distribution manifold assembly may be formed by identical fluid and vent manifolds with cylindrical exteriors, or by identical fluid and vent manifolds surrounded by cylindrical frame members, to form a compact cylindrical combined assembly. Flexible conduits connect the manifold assembly to a plurality of receptacles, and a consumable subsystem of the manifold assembly, conduits and receptacle caps may be pre-assembled for ease of use.

There is disclosed a fluid distribution system for distributing fluid from a single source to a plurality of downstream receptacles. The system has a distribution manifold assembly with a single inlet and a plurality of outlets arrayed around a circumferential outer periphery. The outlets may be directed to the different receptacles which each have their own vent filter, or each receptacle connects back to the distribution manifold for common venting. The distribution manifold assembly may be formed by identical fluid and vent manifolds with cylindrical exteriors, or by identical fluid and vent manifolds surrounded by cylindrical frame members, to form a compact cylindrical combined assembly. Flexible conduits connect the manifold assembly to a plurality of receptacles, and a consumable subsystem of the manifold assembly, conduits and receptacle caps may be pre-assembled for ease of use.