Abstract:
A compact, rapid upflow deep media filter (10) for removing suspended solids from a liquid flow, which includes: a filter casing (12) having a liquid inlet port (16), a liquid outlet port (18), and a filter bed (26) composed of a volume of granular filter media (24) and located between the inlet port and the outlet port; and a screen (32), selectably movable between a first operative position and a second operative position within the filter casing, whereat in the first operative position the screen maintains the filter bed in a packed state so as to permit filtration therethrough of a liquid flow from the inlet port to the outlet port, and whereat in the second operative position the screen does not maintain the filter bed in a packed state such that in the presence of a liquid flow from the inlet port to the outlet port the volume of filter media expands so as to enable separation therefrom of suspended solids accumulated during filtration of the liquid flow therethrough.
Abstract:
Methods and systems for filtration are disclosed. A feed mixture including at least one liquid component and at least one solid component and a flow of gas may be directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side. The gas loosens and removes foulants accumulating within and on the upstream surface of the filter medium. The gas and filtrate may be separated from one another after passing through the filter medium.
Abstract:
One embodiment of a sediment filter includes a filter head having an inlet opening, an outlet opening, a drain outlet, and a sump connector, the sump connector includes a first opening in fluid communication with the inlet opening and a second opening in fluid communication with the outlet opening, a cylindrical filter having a cylindrical screen, an upper end having a filter outlet opening, and a lower end having a tube opening, the filter outlet opening in fluid communication with the sump connector second opening, a sump receptacle having a lower end having a sump and an upper end having an opened end, the open end having a head connector for coupling with the sump connector, and a tube having a lower end and an upper end, the tube extends through the cylindrical filter, with the lower end ending into the sump and the upper end extending into the filter head, with the upper end in fluid communication with the drain outlet, whereby sediment may be drained from the sediment filter with water flow from the head inlet opening, down into the sump, up through the tube and out the head drain outlet.
Abstract:
One embodiment of a sediment filter (10) includes a filter head (12) having an inlet opening, an outlet opening, a drain outlet (34) , and a sump connector, the sump connector includes a first opening in fluid communication with the inlet opening and a second opening in fluid communication with the outlet opening, a cylindrical filter (28) having a cylindrical screen, an upper end having a filter outlet opening, and a lower end having a tube opening, the filter outlet opening in fluid communication with the sump connector second opening, a sump receptacle (26) having a lower end having a sump and an upper end having an opened end, the open end having a head connector for coupling with the sump connector, and a tube (30) having a lower end and an upper end, the tube extends through the cylindrical filter, with the lower end ending into the sump and the upper end extending into the filter head, with the upper end in fluid communication with the drain outlet, whereby sediment may be drained from the sediment filter with water flow from the head inlet opening, down into the sump, up through the tube and out the head drain outlet.
Abstract:
Methods and systems for filtration are disclosed. A feed mixture including at least one liquid component and at least one solid component and a flow of gas may be directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side. The gas loosens and removes foulants accumulating within and on the upstream surface of the filter medium. The gas and filtrate may be separated from one another after passing through the filter medium.
Abstract:
The present invention relates to a system and a process of running the system that allows for the long term filtration of product without loss of filtration capability due to clogging or fouling. The system is a normal flow filtration system having one or more filter cartridges attached to an outlet of a housing in the system. The filter cartridge(s) are contained within a bowl and depend preferably vertically from the outlet. Liquid enters the bowl of the housing and contacts the outer surfaces of the one or more cartridges. Impurities are trapped on or in the surface of the filter and the filtered liquid flows through the filter and through the outlet. One or more parameters such as flow rate, transmembrane pressure drop and/or time are measured and when the desired parameter(s) are met, the filtration ceases. A backflushing occurs back through the filter cartridges so as to remove the trapped impurities on or in the filter surface. This backwashed material is directed to an outlet of the bowl that is connected to a drain. Additionally a port formed in the side of the housing adjacent an outer surface of the cartridge(s) can be used to provide a lateral washing of the filter surfaces. The system is then recirculated in a downstream manner to reestablish equilibrium and filtration is the restarted.
Abstract:
The invention relates to a device and a method for the purification of effluent. The device comprises a filter container (1A), containing a filter medium (2a, 2b), through which the contaminated effluent (3) is run in a direction (filtration direction), thus depositing dirt particles on the filter medium (2a, 2b). The risk of filter blocking is present in such filtration devices, especially at low filtration speeds. It is known that filter blockages can be avoided by the addition of flocculating agents or by increasing the filtration speed. The addition of flocculating agents makes the filter process more expensive and increasing the filtration speed reduces the quality of the filtrate. According to the invention, a high filtrate quality may be guaranteed without addition of flocculating agents with said device, whereby the cross-sectional area of the filter container (filtration area) running perpendicular to the filtration direction, expands in the filtering direction, whereupon the speed of the effluent being run through (filtration speed) continually reduces along the filtration direction.
Abstract:
Equipment and procedure for the separation of solid particles and colloids suspended in liquid with automatic washing system of filtering meshes by means of high pressure water jets generated by a group of mobile spray nozzles, moved vertically by a hydraulic piston controlled by the same washing liquid pressure, operating when the filter is empty of liquid in filtration. The liquid jets are generated by a single nozzles or a group of nozzles, supplied with water through the shaft of the same piston. The nozzles are disposed in such a way to sprinkle the whole surface of the filtering mesh. Feeding the cylinder upper chamber with washing liquid with suitable pressure and flow determines the descending movement of the piston and with it of the nozzle or group of nozzles, mounted at the end of the piston shaft. The velocity of movement of the group of nozzles is regulated, creating in different ways, a resistance to the flow of liquid from the cylinder lower chamber. The upward motion of the plunger to its starting position is obtained by the injection of the liquid, which comes from a pneumatic device or from a dedicated circuit, in the cylinder lower chamber, with the consequent flow of liquid from the superior chamber through the nozzles.
Abstract:
Equipment and procedure for the separation of solid particles and colloids suspended in liquid with automatic washing system of filtering meshes by means of high pressure water jets generated by a group of mobile spray nozzles, moved vertically by a hydraulic piston controlled by the same washing liquid pressure, operating when the filter is empty of liquid in filtration. The liquid jets are generated by a single nozzles or a group of nozzles, supplied with water through the shaft of the same piston. The nozzles are disposed in such a way to sprinkle the whole surface of the filtering mesh. Feeding the cylinder upper chamber with washing liquid with suitable pressure and flow determines the descending movement of the piston and with it of the nozzle or group of nozzles, mounted at the end of the piston shaft. The velocity of movement of the group of nozzles is regulated, creating in different ways, a resistance to the flow of liquid from the cylinder lower chamber. The upward motion of the plunger to its starting position is obtained by the injection of the liquid, which comes from a pneumatic device or from a dedicated circuit, in the cylinder lower chamber, with the consequent flow of liquid from the superior chamber through the nozzles.