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.

The invention relates to a filter system for treating contaminated liquids, having a filter container (11) that is equipped with a filter bed (12) comprising filter granulate as the filter material, a retaining element (13) being provided for the filter material via the filter bed. In order to allow the retaining element (13) to be lightly cleaned after backwashing and prevent filter material from being lost during the backwash, the retaining element (13) has a substantially vertically arranged filter screen (14) which is arranged at least partly outside of the filter container (11) and encloses a cavity, and liquid can flow outwards from the inside during the backwash. The cavity is open at the bottom such that retained filter material falls back into the filter bed (12). Because the flow within the filter bed (14) is oriented downwards, at least one turbine blade (18) can be provided, and a channel (16) can provided from the filter container (11) to the head space (17) of the filter screen (14). Preferably, a dissolver disc or a stirring mechanism (15) is provided in order to improve the flow formation. Alternatively, instead of a turbine blade, a funnel (15′) can be arranged on the lower end of the filter bed (14).

The invention relates to a filter system for treating contaminated liquids, having a filter container (11) that is equipped with a filter bed (12) comprising filter granulate as the filter material, a retaining element (13) being provided for the filter material via the filter bed. In order to allow the retaining element (13) to be lightly cleaned after backwashing and prevent filter material from being lost during the backwash, the retaining element (13) has a substantially vertically arranged filter screen (14) which is arranged at least partly outside of the filter container (11) and encloses a cavity, and liquid can flow outwards from the inside during the backwash. The cavity is open at the bottom such that retained filter material falls back into the filter bed (12). Because the flow within the filter bed (14) is oriented downwards, at least one turbine blade (18) can be provided, and a channel (16) can provided from the filter container (11) to the head space (17) of the filter screen (14). Preferably, a dissolver disc or a stirring mechanism (15) is provided in order to improve the flow formation. Alternatively, instead of a turbine blade, a funnel (15′) can be arranged on the lower end of the filter bed (14).

A process for the separation of electrolyte from the carbon in a solid carbon/electrolyte cathode product formed at the cathode during molten carbonate electrolysis. The processes allow for easy separation of the solid carbon product from the electrolyte without any observed detrimental effect on the structure and/or stability of the resulting solid carbon nanomaterial.

The water purification module includes a tubular receiving container with a base member and a removable lid with through bores, through which liquid to be purified may be supplied at the top into the interior of the receiving container. The water purification module also includes a tubular filter insert, which is removably suspended within the inner wall of the receiving container and is sealed with respect to the inner wall of the receiving container by an annular seal, and at least one extraction opening for purified liquid, which extends through the wall of the receiving container and/or the base member.

The present precipitate removing apparatus is a precipitate removing apparatus for removing a precipitate, precipitating on the bottom of a water tank that stores a liquid (cooling water), and includes an injector provided in the water tank, and an introduction pipe for introducing the liquid in the water tank to the injector. The introduction pipe is provided with a pressure pump for pumping the liquid in the water tank to the injector.

Provided is a cartridge filter using nanofiber composite fiber yarn, the cartridge filter including: a core having a plurality of holes through which a liquid passes; and a filter medium wound around the core to collect an object to be filtered contained in the liquid, wherein the filter medium comprises composite fiber yarn in which a nanofiber web which is produced by accumulating nanofibers produced by an electrospinning method is laminated to a porous nonwoven fabric, to thus provide excellent durability and improved filtration performance.

A filtration media, system and method to passively remove phosphorus and coliforms from wastewater streams is provided. The filtration media system allows wastewater to enter via an inlet toward a diffusor, a filtration media and a filtration media support. The filtered wastewater exits through an outlet. In one aspect, the filtration media broadly comprises sand, activated alumina, peat moss or lime, or any combination thereof. In an exemplary embodiment, the dephosphatation media may further comprise about 20-65% filtration grade sand, about 7-14% granular activated alumina, about 25-50% peat moss and about 5-20% dolomitic lime. The filtration media system may be used in a wastewater treatment method to passively remove phosphorus and coliforms from sewage streams. The dephosphatation media system may be used to passively treat domestic, industrial and commercial sewage streams.

A filtration media, system and method to passively remove phosphorus and coliforms from wastewater streams is provided. The filtration media system allows wastewater to enter via an inlet toward a diffusor, a filtration media and a filtration media support. The filtered wastewater exits through an outlet. In one aspect, the filtration media broadly comprises sand, activated alumina, peat moss or lime, or any combination thereof. In an exemplary embodiment, the dephosphatation media may further comprise about 20-65% filtration grade sand, about 7-14% granular activated alumina, about 25-50% peat moss and about 5-20% dolomitic lime. The filtration media system may be used in a wastewater treatment method to passively remove phosphorus and coliforms from sewage streams. The dephosphatation media system may be used to passively treat domestic, industrial and commercial sewage streams.

A combination biological contactor and self-backwashing filter system for water treatment is disclosed. The system may include a treatment vessel defining an upper chamber and a lower chamber. A biological contactor may be disposed within the upper chamber, and a filter may be disposed in the lower chamber. A contactor outlet conduit and inlet manifold may be used to transfer water from the biological contactor to filter cells within the filter.