This infiltration intake system for a revetment wall includes a structural body, set on an outer wall surface of a revetment wall, including a filter storage portion, a filter stored in the filter storage portion of the structural body, and a water guide portion guiding treated water passing through the filter toward the side of an inner wall surface of the revetment wall.

This infiltration intake system for a revetment wall includes a structural body, set on an outer wall surface of a revetment wall, including a filter storage portion, a filter stored in the filter storage portion of the structural body, and a water guide portion guiding treated water passing through the filter toward the side of an inner wall surface of the revetment wall.

A portable pool filter system is disclosed. The portable pool filter system is fully immersible and self-contained. Water is suction fed through the filter before entering the pump and being discharged. The device decontaminates water from all contaminations to include algae, iron, red clay, and oils.

A portable pool filter system is disclosed. The portable pool filter system is fully immersible and self-contained. Water is suction fed through the filter before entering the pump and being discharged. The device decontaminates water from all contaminations to include algae, iron, red clay, and oils.

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.

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.

Certain embodiments include a screen assembly of a vessel, where the screen assembly includes a plurality of fixed elements and a retainer, and the retainer includes a ring, a plurality of wedges disposed about the ring, and a plurality of keyholes at spaced locations about the ring. Each keyhole includes a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots have a width less than the bores, and the retainer may receive the fixed elements through the bores and may be rotated in a relation with the plurality of fixed elements to bring the plurality of fixed elements into simultaneous engagement with the wedges.

A mobile microalgae harvesting apparatus is disclosed. In one embodiment the mobile microalgae harvesting apparatus includes a harvesting boom coupled to a harvesting vessel, where the harvesting boom skims a microalgae mixture of microalgae and water from a surface of a body of water down to a predetermined depth below the surface. In the embodiment, the mobile microalgae harvesting apparatus also includes a separator aboard the harvesting vessel that separates water from the microalgae mixture and a microalgae collector that collects microalgae from the separator, wherein the microalgae collector deposits the collected microalgae on a transfer vessel coupled to the harvesting vessel. A mobile microalgae harvester and a system for harvesting microalgae are also disclosed.

A mobile microalgae harvesting apparatus is disclosed. In one embodiment the mobile microalgae harvesting apparatus includes a harvesting boom coupled to a harvesting vessel, where the harvesting boom skims a microalgae mixture of microalgae and water from a surface of a body of water down to a predetermined depth below the surface. In the embodiment, the mobile microalgae harvesting apparatus also includes a separator aboard the harvesting vessel that separates water from the microalgae mixture and a microalgae collector that collects microalgae from the separator, wherein the microalgae collector deposits the collected microalgae on a transfer vessel coupled to the harvesting vessel. A mobile microalgae harvester and a system for harvesting microalgae are also disclosed.

A distributor plate for a fluid tank such as a water softener pressure vessel separates the resin bed from a lower end of the resin tank. The distributor plate includes a disk that is supported on an upwardly facing surface from below and that is restrained from upward motion by a weld bead located above an outer periphery of the disk. The disk may have an inner slotted plate portion and an outer portion, and wherein the outer portion of the disk has an upper surface having an annular protrusion extending above an upper surface of the slotted plate portion, with an upper surface of the protrusion forms an engagement surface for the weld bead. The disk may be formed from a thermoplastic material having a relatively high dimensional predictability such as high-density polyethylene (HDPE) and unfilled or 30% glass-filled Noryl, respectively.