Abstract: A liquid removal apparatus adapted to separate liquid from a composite slurry of liquid and solids. The apparatus includes a movable, permeable membrane having opposing first and second sides. A ‘loaded belt portion’ of the second side is configured to receive the slurry. A permeable membrane support system is configured to provide movable support for the loaded belt portion and includes a transport deck located in contact with the first side of the permeable membrane below the loaded belt portion. The liquid removal apparatus has a housing with a low-pressure chamber in sealing contact with the first side of the permeable membrane. A pressure conditioning system applies a differential pressure via the housing to generate a lower pressure on the first filter belt side than on the second side. The transport deck is located within the low pressure chamber.

Abstract: Disclosed is a hot detachable and replaceable water filter assembly, including a filter core cover and a filter cartridge; wherein the filter cover and the filter cartridge are fastened together. The filter cover includes an upper ceramic piece, a lower ceramic piece and a rotating shaft. The contact surface between the upper ceramic piece and lower ceramic piece is smooth. The upper ceramic piece includes a first through hole. The lower ceramic piece includes a corresponding second through hole. The lower ceramic piece includes a first groove. The rotating shaft includes a first projection to drive the lower ceramic piece to rotate. The filter cartridge includes a water division end cap which is cooperated with the rotating shaft.

Abstract: An exfiltration apparatus for removing contaminants from a fluid, the exfiltration apparatus including a housing defining a fluid flow path and having a first filter/sorptive layer positioned within a first portion of the housing and a second filter/sorptive layer positioned within a second portion of the housing. The first portion of the housing and the first filter/sorptive layer are removable as a unit from the second portion of the housing. The exfiltration apparatus may also include a container positioned within the second filter/sorptive layer and a third filter/sorptive layer disposed within the container. The exfiltration apparatus may also include a container defining a fluid retaining chamber. The chamber may be generally positioned between the first filter/sorptive layer and the second filter/sorptive layer.

Abstract: A filtration and monitoring system. An inlet pipe provides fluid to a filter block chamber and has an inlet valve located therein configured to shut off the flow of the fluid through the inlet pipe. A filtered fluid conduit fluidically connects the filter block with the monitoring device. The outlet axis of the outlet pipe in the filter chamber is offset from the inlet axis of the inlet pipe such that the fluid undergoes a change of direction while passing through the filter block chamber thereby causing turbulent flow within the filter block chamber to reduce the buildup of filter cake on the filter element. Closing the inlet valve block, results in a back-flushing flow of fluid through the filter element from a pressure accumulator located in the filtered fluid conduit.

Abstract: A method for the biological purification of ammonium-containing wastewater. The wastewater is purified in an aeration tank in which a low oxygen concentration of less than 1.0 mg/l is set so as to first convert, using aerobically oxidizing bacteria, ammonium contained in the wastewater to nitrite and then to convert, using anaerobically oxidizing bacteria, ammonium and nitrite to elemental nitrogen. At least a part of surplus sludge formed in the aeration tank is separated into a heavy sludge phase and a light sludge phase. The light sludge phase is fed as surplus sludge to a sludge digestion. Sludge water that is separated off from the sludge in a sludge dewatering is fed to a deammonifying tank. Nitrogen compounds in the sludge water are converted, by deammonification in the deammonifying tank, to elemental nitrogen. Surplus sludge formed in the deammonifying tank is fed to the aeration tank.

Abstract: A filter for use with bulk filtration includes filters arranged in parallel flow and a manifold arrangement. The manifold arrangement has a first pipe within a second pipe. An inlet channel conveys unfiltered fluid to the filters, and an outlet channel conveys filtered fluid from the filters. The inlet channel is an interior volume between an outside surface of the first pipe and an inside surface of the second pipe. The outlet channel is an interior volume of the first pipe. Methods of servicing and filtering are provided.

Abstract: A household laundry dryer has at least one filter container which includes a chamber with an inlet for condensate water to be cleaned. The chamber has a first outlet, a second outlet and a filter element which is arranged between the inlet and the first outlet and which divides the chamber into an inlet-side first chamber part and a second chamber part. The filter container can be configured in such a way that the inlet is arranged below the filter element and the filter element is arranged below the first outlet, and the second outlet opens into the first chamber part. Particles deposited on the filter element by water being pushed through the inlet into the chamber are detachable from the filter element by water flowing back into the chamber, when no water is being pushed through the inlet, and removable through the second outlet.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system pumps air into the water treatment system to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system may pump air into the water treatment system at atmospheric pressure or may pump air at higher pressures such that the air may be recharged while also treating the water. The aeration control valve may also control the release of air from the water treatment system. The operating cycles may include, for example, a service cycle, a backwash cycle, an air regeneration cycle, a service/air charge cycle, an air release cycle, and a rinse cycle.