Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Abstract: In accordance with aspects and embodiments, a filtration system is provided comprising a membrane module comprising an upper header and a lower header, a plurality of hollow fiber membranes having an upper end potted in the upper header and a lower end potted in the lower head, a cage at least partially surrounding the plurality of hollow fiber membranes, and a screen in contact with and surrounding the cage, the filtration system further comprising an aeration cap coupled to the lower header of the membrane module. The screen may protect the hollow fiber membranes from damage from coarse contaminants contained in the feed liquid, may improve module integrity, and may improve the efficiency of the filtration system.

Abstract: An automatic filtering system for filtering a cooking medium in a fryer, includes a frypot; a filter manifold having removable filter; a pump, that supplies cooking medium from the filter manifold to the frypot; a pressure sensor that senses a pressure of the cooking medium supplied by the pump; and a controlling mechanism that controls an operation of the pump in response to the sensed pressure data. The control mechanism halts the operation of the pump after sensing a drop in the pressure of the cooking medium pressure that is greater than or equal to a predetermined pressure drop threshold. The systems and methods of the invention provide automatic filtering that may reduce or eliminate an incorrect refilling operation after the filtering of cooking medium, so that the filtering process may be performed correctly each time.

Abstract: Described herein is a disposable module for purifying a fluid, in particular water, adapted to form part of a fluid purification system and method of cleaning at least a portion of a fluid purification system using such a disposable module, where the method includes the steps of: (a) providing a disposable module which includes a housing containing a cleaning agent from the outset: (b) connecting the module to a purification system which is downstream of the module and starting a system cleaning procedure, thereby to clean at least a portion of the purification system.

Abstract: A filter device and a method for the filtration of beer, where, for an improved and simplified filtration, the filter includes a nonfiltrate chamber having a nonfiltrate inlet and a nonfiltrate outlet, wherein the nonfiltrate flows into the nonfiltrate chamber substantially tangentially to the walls thereof, and the bottom of the nonfiltrate chamber is constructed at least partially as a filter. The filter also includes a filtrate chamber underneath the bottom, and a filtrate outlet.

Abstract: A method of cleaning a membrane filtration module (6), the module (6) including at least one membrane (8) located in a feed-containing vessel (7), the membrane (8) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprising the steps of: suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter therefrom into liquid surrounding the membrane (8); performing a high velocity sweep of the feed-containing vessel (7) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation. An improved gas scouring method is also disclosed.

Abstract: The present invention relates to a membrane separation method and a relevant equipment, in particular to a method and an equipment for membrane separation utilizing concentration polarization during membrane filtration process, especially, to a concentration process and equipment and a drawer special for drawing a concentration polarization layer. The direct removal of the concentration polarization layer from membrane surface not only decreases the adverse influence of concentration polarization on membrane separation but also obtains concentrated retention components, thereby significantly improving the ability to maintain membrane flux, solving the twinborn problems concerning concentration polarization and membrane fouling during the membrane separation process, and achieving a high-efficiency concentration for retention components.

Abstract: Disclosed herein is a ballast water treatment device. The device includes a filtering unit filtering ballast water introduced into a ship using a filter, a vortex generating unit generating an artificial vortex in the ballast water filtered by the filtering unit, and an ultraviolet treatment unit having an ultraviolet lamp which sterilizes the ballast water discharged from the vortex generating unit using ultraviolet rays, thus preventing secondary contamination resulting from by-products, preventing a ballast tank from becoming contaminated, affording effective maintenance, and making it convenient to control. Further, an artificial vortex is formed in the ballast water when it is mixed, thus allowing a large quantity of ultraviolet rays to be radiated onto the ballast water passing through the ultraviolet treatment unit, therefore improving a sterilization effect.

Abstract: A pool pump strainer having a rotatable trim assembly within a flooded housing cavity. A suction inlet and filtered suction outlet pair and a backwash inlet and backwash outlet pair are formed in and pass through opposite regions of a housing with at least 30 degrees between each part of a pair. A strainer disposed inside a conduit fixed between a pair of shutter plates makes up the trim assembly which is rotated between strainer and backwater positions by a stem extending through the housing. In the strainer position, water is drawn through the strainer to catch debris and then passes to the pump's suction side. In the backwash position, water is drawn through the flooded housing cavity to the suction side of the pump by a shunt. Thereafter, water discharged from the pump flows under pressure across the strainer to dislodge debris to be deposited into a catch box.

Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Abstract: A membrane treatment plant having at least two stages (53), (69), (75) arranged serially is disclosed. Each stage (53), (69), (75) comprises at least four membrane units (55) arranged in parallel, with each membrane unit (55) having an inlet (57), a feed/concentrate outlet (59) and a permeate outlet (61). Each stage (53), (69), (75) has a common inlet header (51), (67), or (73) and a common outlet header (65), (71), or (77), with the common outlet header (65) (71) of an upstream stage connecting to has the common inlet header (67) (73) respectively of an immediately downstream stage. Each membrane unit (55) has an inlet flow control valve (93) connecting between its inlet (57) and the common inlet header of the stage in which it is located, and an outlet flow control valve (63) connecting between its outlet (59) and the common outlet header of the stage in which it is located.

Abstract: A portable device for filtering and purifying water comprised of an outer chamber and an inner chamber that is slidable within a section of the outer chamber, and a small pore size pre-filter, whereby water is drawn through the pre-filter into the first container section of the outer chamber where it is isolated and treated with a disinfectant agent, then is drawn out of the first container section and into the second container section, and then into the inner chamber, where it is passed across another filtering material such as an activated carbon bed, removing any remaining contaminants before the potable water exits through a mouthpiece.

Abstract: A portable device for filtering and purifying water comprised of an outer chamber and an inner chamber that is slidable within a section of the outer chamber, and a small pore size pre-filter, whereby water is drawn through the pre-filter into the first container section of the outer chamber where it is isolated and treated with a disinfectant agent, then is drawn out of the first container section and into the second container section, and then into the inner chamber, where it is passed across another filtering material such as an activated carbon bed, removing any remaining contaminants before the potable water exits through a mouthpiece.

Abstract: Plant for treating the leftover liquids of mechanical processing, comprising a filtering partition (9) for filtration of the fluid and means for cleaning the partition by washing of the layer of mud deposited hereon, comprises vibratory means suitable for causing a generally fast and continuous vibratory state at least in the active portion of the partition. The plant comprises at least one chamber (6) that is divided into two parts by the filtering partition (9), one part being intended for the exit of the filtered fluid, means suitable for causing a generally fast and continuous vibratory state at least in the active portion of the partition are associated with said chamber. Method for treating the leftover fluids of mechanical processing, comprising filtration of the fluid through a filtering partition and periodic cleaning of the partition through washing of the layer of mud deposited here; it foresees that at least the surface of the partition on which the mud deposits is subjected to vibratory motion.

Abstract: The present invention relates generally to an environmentally sensitive mobile cleaning system, and more specifically relates to a closed loop water recirculation system for high or ultra-high pressure mobile cleaning apparatus. The system includes a water tank sized to contain an established volume of fluid sufficient to circulate through the system, a pump to pressure the fluid to a cleaning head, a vacuum system to return the contaminated fluid to the system, and a filter means to remove the contaminants from the fluid so that clean fluid can be reintroduced to the cleaning head. The method comprises the steps of increasing the pressure of a fixed volume of fluid in a closed-loop system, jetting or blasting the surface with the pressurized fluid, vacuuming the blasted fluid into the system, and removing the contaminants from the fluid.

Abstract: A method of cleaning an screen in a manufacturing process step that employs a chamber including a drain line having a screen configured and disposed in the chamber above the drain line to trap soluble materials includes detecting a build-up of soluble material on the screen, ceasing a work operation in the chamber, and initiating a screen cleaning operation. The screen cleaning operation includes closing a computer operated valve fluidly connected to the drain line to fluidly isolate a portion of the chamber, automatically introducing an amount of solvent into the chamber once the computer operated valve is closed with the amount of solvent filling the chamber and/or the drain line to fully immerse the screen, and opening the operated valve after a predetermined amount of time to empty the chamber and the drain line of solvent once the soluble materials trapped on the screen are dissolved.

Abstract: A multi-step press apparatus for sludge dewatering and waste water filtration comprising: a tank, an inflatable membrane, a level sensor, and a nozzle assembly.

Abstract: A home RO filtration system includes a membrane module having an inlet connected to a feed line, the membrane module also having a concentrate outlet coupled to a concentrate line, and a permeate outlet coupled to a permeate line. The permeate line communicates with a faucet. The system includes a flush reservoir communicatively coupled between the permeate line and the feed line. The system is configured such that after the faucet is turned off, a portion of permeate is delivered to the reservoir and then delivered to the inlet of the module to flush the module.

Abstract: A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is initially passed across a pre-filter secured over the inlet to the first chamber and having a very small pore size and an inner cavity in which a disinfecting agent is place to filters most contaminants before the water is drawn into said filtering device, and once in the first holding chamber the water is isolated and may be further treated with a disinfectant agent, and then is passed though at least additional filtering substance including an activated carbon or nano-filter.

Abstract: A method of starting up a filtration plant for the filtration of a process liquid, after cleaning of the filtration plant, and a filtration plant which is arranged to be able to started up in accordance with this method. A secondary liquid supply unit connected to the post-treatment equipment during the starting up of the plant provides a flow of e.g. sterilized water to the post-treatment equipment, so that this can be held in a condition in which it is ready for operation. Thereafter, the process liquid is led to the filtration equipment, and the flow of liquid from the secondary liquid supply unit to the post-treatment equipment is shut off when a flow of filtered process liquid is obtained, and which thereafter replaces the liquid from the secondary liquid supply unit.

Abstract: A regeneration circuit for the in situ regeneration of an inline adsorbent filter, said filter being part of a normal circuit that is configured to remove one or more contaminant from a fluid circulated through a machine; the regeneration circuit includes a regeneration unit configured to remove one or more contaminant from a contaminated fluid creating a regenerated fluid, such that in operation the regenerated fluid is pumped from the regeneration unit and through the filter extracting the or each contaminant from the filter creating the contaminated fluid, this contaminated fluid then returns to the regeneration unit for contaminant removal, the pressure and flow rate of the regenerated fluid through the filter are maintained at a level that ensures minimal damage to the filter; said machine is isolated from the inline filter during regeneration.

Abstract: The present invention relates to a membrane separation method and a relevant equipment, in particular to a method and an equipment for membrane separation utilizing concentration polarization during membrane filtration process, especially, to a concentration process and equipment and a drawer special for drawing a concentration polarization layer. The direct removal of the concentration polarization layer from membrane surface not only decreases the adverse influence of concentration polarization on membrane separation but also obtains concentrated retention components, thereby significantly improving the ability to maintain membrane flux, solving the twinborn problems concerning concentration polarization and membrane fouling during the membrane separation process, and achieving a high-efficiency concentration for retention components.

Abstract: A system and method for scouring membranes in a membrane bioreactor system are disclosed. The system employs scouring devices and controls by which pressurized air creates bursts of bubbles that act to scour the membranes of fouling.

Abstract: A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is passed across a micro-filter positioned within a section of the second chamber through which water can be forced by said pumping action to an outlet for purified water.

Abstract: A quickly cleanable water processor includes a shell, a water pipe, at least one filtering unit and a cleaning unit. The shell includes a space defined therein, a water inlet, a water outlet and an air inlet. The water inlet and outlet and the air inlet and outlet are in communication with the space. The water pipe is disposed in the shell and made with slots in communication with the water inlet. The filtering unit is detachably provided around the water pipe. The filtering unit includes alternately arranged membrane bags and water-guiding discs. The cleaning unit includes an air pump and an air pipe extended into the shell from the air pump through the air inlet. The air pipe includes apertures through which air reaches the membrane bags from the air pipe.

Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Abstract: A method for controlling fouling of a settler vessel overflow system comprises maintaining at least a minimum stream flow in the overflow system by recirculating a portion of the overflow stream. A system for performing the method is also disclosed.

Abstract: The process includes operation as follows: putting ozone generated by an ozone generator into raw water, in a normal mode, to subject the raw water to ozone treatment; injecting a flocculant into the raw water before or after the ozone treatment; filtering the raw water by a separation membrane after the ozone treatment and the injection of the flocculant; and intermittently setting cleaning mode to put a larger quantity of cleaning ozone than that in the normal mode into the raw water so as to intermittently increase the concentration of dissolved ozone, thereby cleaning the filtration membrane.

Abstract: An apparatus and method are provided that enable the control of a screening operation based on a calculated screen blockage percentage and the velocity throughput of the screen. The apparatus includes an upstream level detector, a downstream level detector and flume or weir placed downstream of the screen. The apparatus may further include a blockage determination unit which determines the percent screen blockage based on the flow level upstream of the screen and the flow level downstream of the screen.

Abstract: Disclosed herein is a filtering apparatus for treating ballast water. The apparatus is constructed so that a housing cover plate and an exhaust unit are removably coupled to each other at an upper position of a housing. The exhaust unit includes a base flange on a portion thereof coupled to the housing cover plate and the base flange includes a projecting step that projects to be inserted into a core through hole formed in the housing cover plate. A core serving as a discharge passage of foreign substances includes a shaft coupling unit on a portion thereof coupled to the driving shaft, and is coupled at the shaft coupling unit to the driving shaft via a coupling means. The outer diameters of the coupling means and the shaft coupling unit are formed to be smaller than the outer diameter of the core.

Abstract: Exemplary systems and techniques for treating contaminated water are described. In one instance a plant or system includes a membrane filtration mechanism operable to receive an influent water stream containing a contaminant and to separate at least a first portion of the contaminant from a resulting first effluent water stream. The system also includes a reactive filtration mechanism operable to receive the first effluent water stream and to remove a waste stream containing a second portion of the contaminant to produce a resultant second effluent stream.

Abstract: A method for purifying fluids and a sedimentation tank, the sedimentation tank includes: a perforated plate spaced from an upper and of the sedimentation tank dividing the sedimentation tank into an upper chamber and a lower chamber; an inlet adapted to inlet fluid into the tank; a first outlet, positioned above the perforated plate for outletting a clarified fraction of the fluid; a second outlet positioned at a bottom of the tank, for outletting a concentrated sludge fraction of the fluid; a pump; and a washing mechanism, positioned at least partially above the perforated plate; wherein the pump is adapted to provide a washing fluid to the washing mechanism when a level of fluid in the sedimentation tank is below a predefined level; and wherein the washing mechanism washes an upper surface of the perforated plate by the washing fluid.

Abstract: A method of assessing biofilm thickness in a membrane supported biofilm reactor (MSBR) of the type comprising a lumen containing a gas phase, a liquid phase, and a gas permeable membrane providing an interface between the gas and liquid phases, the method comprising the steps of charging the lumen with an inert gas, closing the lumen to establish an initial elevated pressure in the lumen, measuring the rate of change of pressure within the lumen, and correlating the rate of change of pressure (dP/dt) with biofilm thickness. The step of correlating dP/dt with biofilm thickness involves correlating dP/dt with the rate of diffusion of the inert gas (dn/dt), correlating dn/dt with an overall mass transfer coefficient (K), correlating K with the mass transfer coefficient of the biofilm (ICB), and correlating k? with the biofilm thickness.

Abstract: An apparatus for filtering liquid that includes a filter having an external surface; a rotatable shaft extending through the filter; and a movable member coupled to the rotatable shaft. The movable member is configured to impart a suction force at various locations across the external surface of the filter. The movable member has a trailing portion that extends further than the leading portion in the direction toward the filter.

Abstract: A screen cleaning apparatus for use, for example, in connection with a discharge conduit of a sewage pumping station, may include a housing, a screen, a rake and a float. The housing may operate to contain a fluid (and/or define a container for the other components) and include a fluid inlet and a fluid outlet. The screen may be positioned in the housing and define one or more apertures. The rake may also be positioned in the housing and have one or more protrusions, with each protrusion extending into a respective aperture in the screen. The float may apply a force to the rake so that the rake moves relative to the screen and in dependence upon variations of a volume of fluid received in the housing. Accordingly, the rake may rise and fall will the fluid level to remove debris from the screen.

Abstract: A lubricant reclamation configuration includes a series of fluid inlets that distribute the fluid to a series of parallel arrangement of individual filter assemblies. A filter control valve assembly is assembled between the distribution manifold and each respective filter assembly individually controlling fluid flow between the distribution manifold and each respective filter assembly. The filter assembly processes the fluid. The processed fluid is collected and retuned to the system via a series of collection channels. The distribution manifold is preferably fabricated of a series of plates.

Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Abstract: Exemplary systems and methods relating to washboxes are described.

Abstract: A water treatment system is provided having an encapsulate manifold with a reverse osmosis cartridge and one or more filter cartridges. The filter cartridge includes a detent for being received within a slot in the manifold head for secure locking engagement. The water treatment system further includes a single probe conductivity monitoring system for monitoring the performance of a reverse osmosis membrane. The water treatment system is also provided in a modular arrangement wherein manifold heads are physically and fluidly coupled together via a clip which interfaces with the modular manifold heads. The water treatment system also allows for a retrofit application to include a permeate pump. The cartridges are also designed to provide a minimum annular inlet gap to minimize spillage during changing of the cartridges.

Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

Abstract: Embodiments of the invention provide a twin tank water treatment system and method. The water treatment system includes first tank with a first set of sensors and a first resin bed, a second tank with a second set of sensors and a second resin bed, and a valve assembly with a flow meter and a controller in communication with the first set of sensors, the second set of sensors, and the flow meter. The method includes determining when the resin beds are exhausted based on input from the flow meter, the sensors, and a water hardness setting.

Abstract: A method of cleaning an screen in a manufacturing process step that employs a chamber including a drain line having a screen configured and disposed in the chamber above the drain line to trap soluble materials includes detecting a build-up of soluble material on the screen, ceasing a work operation in the chamber, and initiating a screen cleaning operation. The screen cleaning operation includes closing a computer operated valve fluidly connected to the drain line to fluidly isolate a portion of the chamber, automatically introducing an amount of solvent into the chamber once the computer operated valve is closed with the amount of solvent filling the chamber and/or the drain line to fully immerse the screen, and opening the operated valve after a predetermined amount of time to empty the chamber and the drain line of solvent once the soluble materials trapped on the screen are dissolved.

Abstract: Exemplary systems and methods relating to washboxes are described.

Abstract: A beverage bottling plant for filling bottles with a liquid beverage filling material, a container filling plant container filling machine, and a filter apparatus for filtering a liquid beverage. The filter apparatus has a plurality of filter chambers and associated valves for controlling flow of filtered liquid out of the filter chambers to optimize filtration.

Abstract: A filter system includes a distribution valve operable to direct a received fluid stream to first and second outlets during respective first and second cycles. A filtering system filters at least some fluid output from the first outlet of the distribution valve during the first cycle with a first filter while back-flushing a second filter and filters at least some fluid output from the second outlet of the distribution valve during the second cycle with the second filter while back-flushing the first filter.

Abstract: Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules positioned in a feed tank, at least one of the membrane modules having a gas slug generator positioned below a lower header thereof, the gas slug generator configured and arranged to deliver a gas slug along surfaces of membranes within the at least one of the membrane modules and a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator, the global aeration system configured and arranged to induce a global circulatory flow of fluid throughout the feed tank.

Abstract: Methods and apparatus relate to removing selenium from a fluid. The fluid includes non-selenium constituents that are insoluble at a pH in which the fluid is passed through a sorbent bed in order to remove the selenium. Fouling of the sorbent bed can thereby result due to accumulation of the non-selenium constituents, which are precipitated solid materials. Intermittent washing of the sorbent bed with a heated and alkaline wash dissolves and removes the non-selenium constituents to maintain efficient operation and sustain selenium removal performance.

Abstract: A method and apparatus for monitoring an underdrain in a filter system for filtering water or wastewater. At least one diagnostic condition relating to the performance of the underdrain is monitored to determine if the underdrain is operating in an acceptable manner.

Abstract: The invention relates to a device which is used to continuously filter material mixtures, in particular for separating impurities from plastic melts. The device includes a hollow cylindrically-shaped filter element (2) which is arranged inside a housing (1), an annular chamber (22) which is defined from the outside of the filter element (2) and an inner wall of the housing, and at least one stripper (23) which can be pressed onto the filter body by an adjusting device. The stripper is used to remove the impurities detained on the filter element (2) due to a relative movement of the filter element (2) and the stripper (23). The adjusting device contains a pressure sensor (42, 53) which is used to detect the pressure of the material mixture upstream from the filter body and an actuator (43) which is connected to the pressure sensor, the actuator being used to adjust the pressure of the stripper (23) according to the pressure detected by the pressure sensor.

Abstract: The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The invention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.