Abstract: In a hollow fiber membrane module including a housing case, potting material loaded into the housing case, a cap attached to each of both ends of the housing case, and an O-ring closely held by the potting material and the cap, a whole area of the O-ring between a first contact point and a second contact point is exposed when the area is viewed from a central axis passing through a center of the ring shape of the O-ring, the first contact point being a point of contact between the O-ring and the cap, which faces inner cavity defined by an end surface of the potting material facing the cap, an inner circumferential surface of the O-ring and an inner circumferential surface of the cap, and the second contact point being a point of contact between the O-ring and the potting material, which faces the inner cavity.

Abstract: A filter module has hollow fibers which are combined into fiber bundles having end face pottings. The pottings of the fiber bundles are received into a common end disk.

Abstract: A method for the forced dewatering, by pressing, of saline residues produced by drinking water production, or by the treatment of municipal or industrial wastewaters, in which method the saline residues are introduced into the cylinder (12a) of a piston press (12) comprising flexible drains (12e) formed by flexible sheaths from a material that is permeable to liquid but impermeable to solids, each drain (12e) comprising an inner passage that opens into an associated opening (12g), the press operating in batches, and characterized in that during pressing, the piston carries out reciprocal movements and applies alternating and variable pressures to the sludge, while the flexible drains are deformed, the liquid pressed out from the product passing through the wall of the drains and being discharged as a filtrate, while the dewatered sludge remains outside the drains and is discharged by opening the press.

Abstract: The invention relates to a surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions, to a method for binding and bioremediating hydrocarbon-containing compositions as well as to the use of surface-treated calcium carbonate for binding and bioremediating hydrocarbon-containing compositions and to a composite material comprising the surface-treated calcium carbonate and a hydrocarbon-containing composition.

Abstract: Composite filter media is formed from multiple layers of media material including a nanofiber media layer, where the layers are laminated, bound, or otherwise composited to each other. The composite filter media can comprise at least one nanofiber layer comprising polymeric media material having a geometric mean fiber diameter of about 100 nm to 1 ?m, and fibers configured in a gradient such that ratio of the geometric mean diameter of fibers at the upstream face of the nanofiber layer to the geometric mean diameter of fibers at the downstream face of the nanofiber layer is about 1.1 to 2.8, preferably about 1.2 to 2.4.

Abstract: An internally fed drum filter for treating waste water, includes an inlet distribution arrangement for distributing waste water entering the drum filter via an inlet duct, characterized in that the inlet distribution arrangement includes an adjustable flow deflection member arranged near the outflow opening of the inlet duct, downstream thereof, for adjusting the flow characteristics of waste water entering the drum filter via the inlet duct.

Abstract: A method is provided for using forward osmosis to remove impurities dissolved in an aqueous-based feed solution, where the method includes directing a solvent past a first side of a forward osmosis membrane and the feed solution is directed past a second side of the forward osmosis membrane, the solvent having a higher osmotic pressure than the feed solution so as to draw water across the membrane thereby diluting the solvent and concentrating the impurities in the feed solution, where the solvent is an amine-terminated branched PEG, such as amine-terminated glycerol ethoxylate, amine-terminated trimethylolpropane ethoxylate, or amine-terminated pentaerithritol ethoxylate, for example. The method further includes regenerating the solvent by exposing the diluted solvent to a gas containing CO2, whereby the CO2 is absorbed by the solvent, facilitating substantial separation of the solvent from water.

Abstract: The present disclosure provides a suction filter that filters a fuel inside a fuel tank of a vehicle. The suction filter includes a filter element, a partitioning wall element, a passage element, and an open/close valve. The filter element is disposed in and exposed inside of the fuel tank. The filter element filters a stored fuel stored in the fuel tank. The partitioning wall element is arranged in the inside space to divide the inside space into a first space and a second space that is lower than the first space. The inlet to take in the filtered fuel is open in the second space. The passage element defines an inflow opening open in the first space, an outflow opening to which a negative suction pressure is applied through the inlet, and a flow passage through which the filtered fuel flows.

Abstract: A subsurface sewage is provided and includes a plurality of leaching members oriented substantially vertically. A first volume defined within each of the plurality of the leaching members forms a void therein and includes a periphery, a top face that defines a first substantially horizontal plane, and a bottom face that defines a second substantially horizontal plane. A permeable enclosure is wrapped substantially around the periphery of each leaching member and a system frame maintains a location and a position of the plurality of the leaching members. A filter media is disposed in a second volume defined between at least two of the plurality of the leaching members. A leaching member balancing pipe is configured to hydraulically connect at least one of the plurality of the leaching members to at least one other of the plurality of the leaching members. A distribution pipe is configured to hydraulically connect at least one of the plurality of the leaching members to a source of an effluent flow.

Abstract: Disclosed is a modified activated sludge-based two-compartment treatment method for processing nitrate-contaminated drinking water. Raw water is firstly sent to a first TiO2-modified denitrifying activated sludge bioreactor (2), wherein organic carbon source is added in a controlled amount, and nitrate is partly reduced with nitrite being accumulated. Then, the effluent from the first bioreactor is sent to a second TiO2-modified denitrifying activated sludge bioreactor (3), wherein organic carbon source and hydrogen gas are supplemented, and remaining nitrate and accumulated nitrite are reduced to nitrogen gas. The denitrified effluent from the second bioreactor is sent to a settling tank (4), and TiO2-containing precipitates collected from the settling tank receive sequential alkaline and acidic treatment before being injected into the first bioreactor (2) for TiO2 recycling.