Abstract: Two cylinder devices are respectively connected to two flow path switching devices; first and second position detectors which detect movement and passage of a piston are disposed at one end side of the two cylinder devices; and third and fourth position detectors are disposed at an interval more toward the one end side. The cylinder device in the filling process is set to the pressure feeding process by a flow path switching device in accordance with signals of the first and second position detectors of the cylinder device in the pressure feeding process, and the cylinder device in the pressure feeding process is subsequently set to the filling process by a flow path switching device in accordance with signals of the third and fourth position detectors.

Abstract: Audible features are provided for a fluid filter assembly and a filter cartridge for use with a fluid filter assembly. The audible features generate sound when the filter cartridge is installed in the filter system so as to provide a signal indicating proper installation. Sound can also be created when the filter cartridge is removed. The filter system can also be provided with features for reducing clogging of the fluid path leading to the filter element.

Abstract: A water system for a hydraulic frac station. The water system includes a water source, a water retention pit, a pump, a riser station, and a water recycling system. The pump is configured to channel water from the retention pit to the riser station and to the hydraulic frac station. The water from the retention pit is channeled to the hydraulic frac station, which in turn is channeled to the recycling system via the riser station.

Abstract: A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialysate flow path and a blood flow path which flow in opposite directions through a dialyzer. The disposable cartridge further includes a filter for removing waste products from the dialysate as well as one or more flow sensors for measuring the flow of dialysate in the dialysate flow path. The preferred flow sensor includes a rotatable spoked wheel in the dialysate flow path which is rotated by the flow of dialysate. The spoked wheel includes one or more magnets which are rotated with the rotation of the spoked wheel. The flow sensor further includes a magnetic field sensor in the reused dialysis machine which is connected to a processor for monitoring the rotation of the spoked wheel to determine flow of fluid in the dialysate flow path.

Abstract: A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialysate flow path and a blood flow path which flow in opposite directions through a dialyzer. The disposable cartridge includes a filter for removing waste products from the dialysate. The reused dialysis machine possesses a reservoir for dialysate, various sensors including a reservoir level sensor assembly, and a processor connected to the various sensors for controlling and monitoring hemodialysis treatment. The reservoir level sensor assembly includes a vertically extending electrode array for transmitting electrical signals to the processor detecting whether the reservoir possesses sufficient dialysate for therapy, and for detecting whether there is a fault condition during therapy such as a loss of dialysate in the reservoir or an increase in fluid in the reservoir which may indicate a failure in the dialysis membrane.

Abstract: A system for isolating and flushing contaminants in a water supply system is disclosed. The system includes a monitoring and detection subsystem, a communication subsystem, and a flushing subsystem. Components of the system for isolating and flushing contaminants may be housed in a hydrant.

Abstract: Disclosed is a hydrant including an upper barrel; at least one hose nozzle; a valve associated with the hose nozzle; an electric motor to open and close the valve; and a controller coupled to the hydrant. In various embodiments, the hydrant includes a diffuser coupled to the hose nozzle. In various embodiments, the hydrant is in wired communication with a monitoring facility, a detection device, or a water motorized valve in a water distribution network. In various embodiments, the hydrant includes a transmitter and receiver.

Abstract: A liquid purification system is provided. Although not limited to water, the purification system is especially suitable for water. The purification system utilizes a vessel having antimicrobial inner wall load bearing surfaces and/or antimicrobial (antibacterial, anti-fungal, anti-mold, etc.) interior non-load bearing surfaces. When the liquid moves within the vessel and contacts the antimicrobial surfaces, the liquid becomes purified or sanitized. The inner wall load bearing surfaces and non-load bearing interior surfaces of the vessel may be manufactured from a host polymer that has antimicrobial organo-metallic additives which form a solid-solution with the host polymer and are distributed homogeneously throughout the host polymer. The host polymer matrix may be an organic material, an inorganic material or an organic-inorganic material blend. The antimicrobial agent polymer matrix may be located in localized zones within the vessel.

Abstract: A liquid purification system is provided. Although not limited to water, the purification system is especially suitable for water. The purification system utilizes a vessel having antimicrobial inner wall load bearing surfaces and/or antimicrobial (antibacterial, anti-fungal, anti-mold, etc.) interior non-load bearing surfaces. When the liquid moves within the vessel and contacts the antimicrobial surfaces, the liquid becomes purified or sanitized. The inner wall load bearing surfaces and non-load bearing interior surfaces of the vessel may be manufactured from a host polymer that has antimicrobial organo-metallic additives which form a solid-solution with the host polymer and are distributed homogeneously throughout the host polymer. The host polymer matrix may be an organic material, an inorganic material or an organic-inorganic material blend. The antimicrobial agent polymer matrix may be located in localized zones within the vessel.

Abstract: A system is disclosed for the treatment of wastewater as to reduce the biological oxygen demand, total nitrogen, total suspended solids, and phosphorous, as well as the reduction of liquid water discharged. A wastewater inlet allows the wastewater to enter a first vessel where wastewater is separated based on density. The wastewater is then transferred to a second vessel attached with a pump that sprays the water onto a media. Various other embodiments are also disclosed.

Abstract: A filtering device for treating ballast water and more particularly, a multicage-type device for filtering ballast water to prevent back pressure, wherein the multicage-type device for filtering ballast water includes a back pressure prevention tank on a backwash line for backwashing and discharging foreign substances that are inside a filter of the device for filtering, so that backwash water and the foreign substances in the backwash line are preliminarily stored in the back pressure prevention tank thereby preventing an increase of back pressure and preventing an increase of the back pressure on the backwash line by always maintaining a level of water inside the back pressure prevention tank at lower than an inlet port that is connected to the backwash line.

Abstract: A device for filtering treating ballast water by way of a filtering method, and more particularly, to a compact and operability-enhancing multicage-type device for filtering ballast water, which distributes a lower portion of the device for filtering a discharge portion for discharging foreign substances after backwashing a filter and a backwash line, among features that are concentrated at an upper portion of the device for filtering, and communicates discharge tubes of each filtering unit in a single line, by considering the unique installation environment of the device for filtering that is coupled to a ship, thereby simplifying structure, reducing space required for installing the device for filtering in the upper portion of the device for filtering, allowing efficient maintenance by integrating foreign substance discharge and back pressure maintenance of each of the filtering units.

Abstract: Fluid filtration devices and methods of filtering fluids are described. The devices generally include a housing and an annular filter assembly, wherein the filter assembly is located inside the housing and comprises a filter material. The filter material may be, for example, an electroformed nickel screen having a smooth working surface and expanding pores. A rotating cleaning assembly comprising a distributor and wipers may be located inside the filter assembly.

Abstract: A device (1) for subjecting a liquid to a purifying process comprises an assembly of a first container (10) and a second container (20) for receiving and containing a liquid, wherein means (11) for performing a purifying action on the liquid are arranged in the first container (10), wherein the second container (20) is arranged for receiving an overflow from the first container (10), and wherein a liquid passage (15) is present between the first container (10) and the second container (20). Furthermore, the device (1) comprises means (16) which are associated with the liquid passage (15) between the first container (10) and the second container (20), and which are adapted to assume various states, including a state for blocking the liquid passage (15), and a state for deblocking the liquid passage (15), wherein the device (1) may also be equipped with means (17) for controlling the blocking/deblocking means (16).

Abstract: An expandable water filtering pitcher having a pitcher with a top portion, a base portion and an inner wall surface defining an internal volume of the pitcher, a spout at the top portion at a pitcher opening, a handle attached to an exterior of the pitcher, a filter adapter mounted within the pitcher top portion. The filter adapter is within a reservoir comprising an opening therethrough from the top portion to the base portion of the pitcher and a reservoir sleeve movably coupled to the reservoir and top portion, at least one of the reservoir and the reservoir sleeve moveable in relation to the other between a refracted position defining a first reservoir volume within the reservoir and reservoir sleeve, and an expanded position defining a second reservoir volume within the reservoir and reservoir sleeve at least 40% larger than the first reservoir volume.

Abstract: The invention relates to a filtering device for highly viscous fluids, having at least two parallel screen plungers which are arranged in a displaceable fashion in screen plunger bores of a housing and which have in each case at least one screen cavity in which at least one filter element is arranged, wherein the housing has an inflow opening from which, on the untreated side, at least one flow duct leads to each screen plunger bore, and the housing has at least one flow duct which, on the clean side, leads from each screen plunger bore to an outflow opening. On the untreated side and/or on the clean side, in each case one common flow duct leads rectilinearly along both screen plunger bores and, in a production position, tangentially intersects the screen cavities.

Abstract: A fryer apparatus includes a cooking chamber, at least one heating element in the cooking chamber, a filter pan that filters cooking medium from the cooking chamber, a drain valve that controls flow of cooking medium from the cooking chamber, and a filter pump that pumps filtered cooking medium from the filter pan to the cooking chamber. Inlet orifices are disposed in the cooking chamber, and selectively eject filtered cooking medium into the cooking chamber. A controller controls the drain valve to adjust the rate of flow from the cooking chamber, and selectively activates at least inlet orifice of the plurality of inlet orifices to eject filtered cooking medium into the cooking chamber. The controller is configured to control the drain valve and the selective activation of the at least one inlet orifice to maintain a substantially constant level of cooking medium in the cooking chamber throughout a filtering operation.

Abstract: The present invention relates to an apparatus and a method for filtering liquid products. The apparatus includes a filtration bell provided with filtering device and connected to an inflow circuit and a first outlet circuit of the retentate, and to a second outlet circuit of the filtered liquid. The apparatus can include a monitoring and control unit, a first and second sensing device suitable for detecting the value of a first pressure PT1 in the first outlet circuit and of a second pressure PT2 in the second outlet circuit, a flow rate detection device that detects the value of a first flow rate FIT in the second outlet circuit, and value device arranged in the second circuit downstream of the second sensing device. The monitoring and control unit includes a device to control the closure of the valve device and to start a process of backwashing the filtering device.

Abstract: A water treatment apparatus including one or more mixed raw water stream jet nozzles, a filtering tank housing a filter layer disposed below the mixed raw water stream jet nozzle or nozzles, the filter layer having an upper layer and a lower layer, the upper layer containing a filter material with a smaller specific gravity and a larger particle diameter than a filter material of the lower layer, a water collecting and distributing pipe for removing water filtered through the filter layer and supplying reverse stream cleaning water to the filter layer during reverse cleaning, filter material vibrating means for vibrating a filter material of the upper layer including a vibrating element connected to a power source and vibration expanding element buried in the upper layer for transmitting vibration of the vibrating element, and an overflow outlet provided in the filtering tank above the filter layer.

Abstract: A disc filter is provided having a controller for controlling effluent surges that are produced by the disc filter. The method entails sensing one or more process variables that are a function of the effluent, and based at least in part on the sensed process variables, the disc filter controls the flow of effluent in order to control or minimize effluent surges.