Abstract: A drum structure for corrugated type rotary filters has relatively high filtering efficiency and relatively low manufacturing and/or installation costs. More specifically, a corrugated deck section is rigidly connected to a rotary drum structure by means of solid non-apertured divider grids which establish a drain channel. The drain channel is subdivided into respective compartments by means of intermediate solid non-apertured grids which are unconnected to the corrugated deck, but provide subjacent radial support thereto. Drainage slits are provided in the corrugated deck in alignment with each of the compartments. Plug dams are provided in the corrugation spaces between the upper edge of the intermediate grids and the lower corrugated deck surface so as to prevent substantially filtrate flow between individual compartments.

Abstract: A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream and then routing the mother liquor and or wash filtrate to an oxidation zone.

Abstract: A separator and method according to which substances having relatively high densities are separated from a pressurized flow stream.

Abstract: A cylindrical rotating thickening device including an axial core, a plurality of longitudinally extending spaced apart support ribs extending radially from the axial core, and a shell surrounding the support ribs and supported thereon. The shell includes a plurality of longitudinally extending spaced apart grooves, and a perforated deck surrounding and supported on the shell. The deck includes a plurality of closely adjacent deck segments, and each deck segment includes a leading edge and a trailing edge. Each deck segment further includes an integral bar attached to the leading edge and received in the shell groove, and a plurality of fasteners for securing the bar to the shell.

Abstract: A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catalyst from an oxidizer purge stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.

Abstract: A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream and then routing the mother liquor and or wash filtrate to an oxidation zone.

Abstract: A separator and method according to which substances having relatively high densities are separated from a pressurized flow stream.

Abstract: A method for withdrawing and filtering a partial volume of a particle-containing process fluid enclosed in a container, a combination of a container enclosing a process fluid and an assembly for continuously withdrawing and filtering a partial volume of a process fluid and a cross-flow filtering device are disclosed. The method, the assembly and the filtering device can be used in connection with biological process systems, in which the removal of sand, sludge, fibers and alike from partial volumes of the process fluid is necessary before additional filtration and subsequent sample analysis.

Abstract: A method and apparatus is provided for removing fluids, particularly entrained and/or adherent fluids, from drill cuttings generated during the well drilling process. A generally cylindrical wire-wrapped screen having a bore therethrough rotates about its longitudinal axis. Suction pressure is applied through the inner bore of the cylindrical wire-wrapped screen. As fluid-laden drill cuttings are deposited on the outer surface of the cylindrical wire-wrapped screen, fluids are drawn off of the cuttings and evacuated from the inner bore of the cylindrical wire-wrapped screen. Solid components of the cuttings remain on the outer surface of the cylindrical wire-wrapped screen and eventually roll off the screen. A scraper member is provided to agitate cuttings deposited on the outer surface of the cylindrical wire-wrapped screen.

Abstract: A drum type paper stock refine screen is provided which is capable of efficiently filtering a refined paper stock to the outside of a laterally suspended rotary drum and efficiently discharging foreign matter to the outside of the drum while rotating the drum. The drum type paper stock refine screen includes a lower water infiltration zone formed by infiltrating a lower circular part on one end side of a laterally suspended rotary drum in a water tank, a non-water infiltration zone continuous with the lower water infiltration zone on the other end side of the rotary drum, and a paper stock injection port for injecting a paper stock in the lower water infiltration zone.

Abstract: A filtering system used on a meat injection machine that injects pickling into meat products. The filter consists of a tank and a first and second rotary filter. The first rotary filter uses a wedge wire wound cylinder and augers having flutes that rotate to catch and push away solid particles toward the second filter. The second filter then uses more wedge wire in a whirlpool effect to ensure all solid materials and foam are in the outside of the filter. Injector fluid is then taken from the center of the inside volume of the second filter to be used in injection needles.

Abstract: A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation step uses a dense, non-porous filtration membrane. The process is able to remove both emulsified oil and dissolved oil from the wastewater to low levels.

Abstract: A filtering system used on a meat injection machine that injects pickling into meat products. The filter consists of a tank and a first and second rotary filter. The first rotary filter uses a wedge wire wound cylinder and augers having flutes that rotate to catch and push away solid particles toward the second filter. The second filter then uses more wedge wire in a whirlpool effect to ensure all solid materials and foam are in the outside of the filter. Injector fluid is then taken from the center of the inside volume of the second filter to be used in injection needles.

Abstract: The application relates to a process for producing high-purity bis(4-hydroxyaryl)alkanes from adducts of bis(4-hydroxyaryl)alkanes and aromatic hydroxy compounds, which are obtained by acid-catalysed reaction of the aromatic hydroxy compounds with ketones.

Abstract: A spin filter apparatus for cleaning an influent stream is provided and includes a housing having at least one inlet port for receiving the influent stream, at least one waste port for discharging waste and at least one output port for discharging a processed clean effluent stream. The apparatus also includes a discharge conduit coupled to the at least one outlet port for discharging the processed clean effluent stream; and a spin filter assembly disposed within the housing and including a filter screen set formed of at least two screen filters that are rotatable about the discharge conduit and freely movable in a vertical direction along the discharge conduit.

Abstract: An improved method for using replaceable filtration media in a rotatable drum. A plurality of media cartridges are installed on the rotatable drum. As the drum rotates, the media cartridges are alternately submerged and lifted from the water. The constant cycle of flooding, draining, and tumbling of the media provides excellent water filtration.

Abstract: A rotating drum pressure differential filter is provided whereby a layer of filter medium is continuously refreshed by a spray applicator device after the layer is utilized to filter components sample medium and a portion of the layer is subsequently scraped to remove sample medium waste from the layer. Methods of filtration using the device are also provided as are systems employing two or more such filters. A spray applicator device useful for refreshing a filter medium on the outer surface of a rotating drum pressure differential filter is also provided as is a retro fit kit useful in modifying existing rotating drum pressure differential filters to enable the continuous formation of a refreshed filter medium layer. The continuously refreshed filter and filter systems provide a minimized down time of the filter and system operations. Multiple-stage filtration processes are also provided and are particularly in the recovery of enzymes from fermentation broths.

Abstract: A method of vacuum drying sludge or slurry input material comprises providing a closed-ended vacuum tunnel with at least two interior augers. The tunnel has an interior bed recessed with adjacent troughs separated by a low partition for accommodating the two augers in closely-spaced generally-horizontal side-by-side relation. The augers are driven counter-rotating such the input material re-circulates in an endless loop down one auger, over to the other and back again. The augers have screws formed with stubby flights to form a cut-and-fold arrangement and disintegrate the material. The chamber is heated up to or over 70° C. and a current of air is suctioned into the tunnel through inlets and out through ports in part pull a slight vacuum in the tunnel as well as to suction up and draw out disintegrating fractions of the material including gasified fractions, waftable finely divided particulate fractions and other waftable fractions.

Abstract: Device and process for conveying filter elements to a filter element magazine. The device includes a rotatable drum comprising at least one seat for receiving a filter element and a detection device that controls a rotation of the drum and detects the filter elements. The process includes conveying at least one filter element in a lengthwise axial direction to a drum that includes seats, wherein at least one of the seats is adapted to receive the at least one filter element, guiding the at least one filter element past a detection device, generating a start signal as soon as an end of the at least one filter element has passed the detection device, rotating the drum in a crosswise axial direction after receiving the start signal, and moving the at least one filter element into the filter element magazine.

Abstract: A method and apparatus is provided for removing fluids, particularly entrained and/or adherent fluids, from drill cuttings generated during the well drilling process. A generally cylindrical wire-wrapped screen having a bore therethrough rotates about its longitudinal axis. Suction pressure is applied through the inner bore of the cylindrical wire-wrapped screen. As fluid-laden drill cuttings are deposited on the outer surface of the cylindrical wire-wrapped screen, fluids are drawn off of the cuttings and evacuated from the inner bore of the cylindrical wire-wrapped screen. Solid components of the cuttings remain on the outer surface of the cylindrical wire-wrapped screen and eventually roll off the screen. A scraping member is provided to agitate cuttings deposited on the outer surface of the cylindrical wire-wrapped screen.

Abstract: A self-cleaning water filter, coupled to a water flow having particulates therein, that includes a pair of canisters, each having a cylindrical wedge wire water filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of the water flow into the two dislodge subchambers. The particulate contaminants and the limited amount of water then pass through the apertures at a high velocity and into the drain subchamber which exits through the drain.

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cilinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within the tumbler cilinder to raise moistured solids, wherein said water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cilinder and raised by the blades which comprises a separator to separate the remaining water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cilinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cilinder is mounted to, and which said collecting and recycling hopper collects and recycles the wastewater to the tu

Abstract: The invention relates to homo- and copolymers that contain less than 400 particles with >200 &mgr;m per m2 surface, to thermoplastic molding compounds that contain said homo- and/or copolymers and to the use of the homo- and/or copolymers and of the molding compounds for producing molded bodies. The invention further relates to the molded bodies themselves and to a method for producing the homo- and/or copolymers.

Abstract: The invention relates to a device for filtering liquids, comprising two shafts (11) which are parallel to each other or at an acute angle to each other. Each shaft (1) carries a stack of discs (2) which extend perpendicularly to the shaft axis and which are connected to the shaft (2) in a rotationally fixed manner. The discs (2) of one disc stack are engaged in the intermediate spaces between the discs of an adjacent discs stack. At least one of the shafts (1) is drivable and at least one of the shafts is hollow and is provided with bores (1-2). Some of the discs have channels (2-4) inside them which are conductively connected to the inside of their hollow shaft (1). A ring-shaped distancing element (3) is located between each pair of adjacent discs (2) of a shaft.

Abstract: A method for withdrawing and filtering a partial volume of a particle-containing process fluid enclosed in a container, a combination of a container enclosing a process fluid and an assembly for continuously withdrawing and filtering a partial volume of a process fluid and a cross-flow filtering device are disclosed. The method, the assembly and the filtering device can be used in connection with biological process systems, in which the removal of sand, sludge, fibers and alike from partial volumes of the process fluid is necessary before additional filtration and subsequent sample analysis.

Abstract: The invention at hand relates to an improved wastewater treatment plant consisting of a reactor and a filter device, such as for gaining drinking water or wastewater treatment.

Abstract: A self-cleaning water filter, coupled to a water flow having particulates therein, that includes a pair of canisters, each having a cylindrical wedge wire water filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of the water flow into the two dislodge subchambers. The particulate contaminants and the limited amount of water then pass through the apertures at a high velocity and into the drain subchamber which exits through the drain.

Abstract: Process and decker for bringing together a first aqueous pulp suspension layer with at least one additional suspension layer. The process includes moving the first pulp suspension layer and the at least one additional suspension layer on moving layer supports, and guiding sides of the first pulp suspension layer and the at least one additional suspension layer that are adapted to contact each other on guiding surfaces that are one of stationary and limitedly moving. The guide surfaces include contoured surfaces arranged to run substantially parallel to the layer supports. The process further includes applying the at least one additional suspension layer onto the first pulp suspension layer at a wedge-shaped gap, and draining the first pulp suspension layer and the at least one additional suspension layer. The decker includes at least one rotating cylinder, and an endless wire guided around at least a portion of an outer circumference of the at least one rotating cylinder.

Abstract: Method and arrangement for filtering particles out of a liquid, in which the liquid containing particles is supplied to a sedimentation tank (12), and the liquid is made, by means of hydrostatic liquid pressure prevailing in the tank, to flow through a filter member (18) on the shell surface of a drum (14) mounted in the tank (12). When the liquid in the tank has risen to a predetermined level above the drum (14) as a result of clogging of the filter member (18), cleaning of the filter member (18) in situ in the tank is initiated.

Abstract: A process for recovering crystals from a slurry which comprises supplying a slurry comprising crystals and a solvent to a rotary vacuum filter and successively conducting filtration under suction, washing, filtration under suction and cleavage of a cake continuously by rotation of a cylindrical filter medium, wherein a vapor having a same composition as that of the solvent is supplied as a blowing gas for cleaving the cake. The crystals can be continuously recovered for a long period of time without clogging of a filter medium when the crystals are recovered from a slurry by using a rotary vacuum filter.

Abstract: A disc-type filtration apparatus including at least one filter element and a shower system configured to wash media portions on sides the at least one filter element as the filter element moves rotationally downward toward and into a slurry reservoir and subsequent to scraping of filter cake therefrom. The shower system may be fixed and extend across the sides of the filter element or, alternatively, the shower system may include a movable head which is caused to traverse radially across the sides of the filter element. The shower system may be operated on a discontinuous or periodic basis or, optionally, on a continuous basis. Methods of operation of a filtration apparatus are also disclosed.

Abstract: A precoat renewal system for a filter, such as a disc filter. The renewal system includes a plurality of nozzles coupled to spray piping and valving with each nozzle being positioned for spraying an area of one side of a disc. The nozzles and at least a portion of the spray piping is movable such that the nozzles may be displaced relative to the discs. The nozzles and piping are arranged in groups or zones with each zone covering a specified percentage of the discs in the filter and each zone representing about 40% or less of the surface area of the filter media of the discs in the filter. Each zone is configured such that high pressure fluid may be supplied to that particular zone for removal of a precoat layer on the disc. The system may be configured so that other zones may be concurrently washed with a lower pressure fluid. The zones may be sequentially or otherwise segmentally provided with high pressure fluid until the precoat layers of each respective zone have been removed and renewed.

Abstract: An apparatus for de-watering sludge. A main shaft is rotated about a longitudinal axis at a first rate. A screw shaft coupled to the main shaft is rotated about the longitudinal axis at the first rate. Screw flighting coupled to the screw shaft is rotated about the longitudinal axis at the first rate. A first and second stage drum are rotated about the longitudinal axis at a second rate. Sludge is introduced to a first area defined by an outer surface of the screw shaft and an inner surface of the first stage drum. Moisture is removed from the sludge through a first slot coupled to the first stage drum. The sludge is transported with the screw flighting from the first area to a second area defined by an outer surface of the screw shaft and an inner surface of the second stage drum, the second area being larger than the first area. Moisture is removed from the sludge through a second slot coupled to the second stage drum.

Abstract: Apparatus and a method are presented for the mechanical removal of moisture from a filter cake. Differential pressure causes the flow of a treatment fluid through the filter cake. The treatment fluid displaces liquid originally present in the filter cake to prevent cracking of the filter cake.

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cylinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within te tumbler cylinder to raise moistured solids, wherein said waste water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cylinder and raised by the blades which comprises a separator to separate the remaining waste water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cylinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cylinder is mounted to, and which said collecting and recycling hopper collects and recycles the waste wat

Abstract: Method for dewatering of water-containing sludge in a sewage well or the like, wherein the water-containing sludge is collected in a tank, the sludge is separated in a downstream filter and the purified water is returned to the well, wherein at least one adjustable and inflow controlling valve is coupled between a suction tank and a downstream filter, a feeding device is arranged for continuous or intermittent discharge of the sludge separated in the filter to one or more compressing units, intended for compressing of the fed sludge, further comprising a container for storing the compressed sludge and tanks units and pumps for receiving and transporting the squeezed out and purified, respectively, and in the process oxygenated water.

Abstract: A process for recovering crystals from a slurry which comprises supplying a slurry comprising crystals and a solvent to a rotary vacuum filter and successively conducting filtration under suction, washing, filtration under suction and cleavage of a cake continuously by rotation of a cylindrical filter medium, wherein a vapor having a same composition as that of the solvent is supplied as a blowing gas for cleaving the cake.

Abstract: An apparatus for collecting oil from a surface of a water body comprising a drum, the drum rotatably mounted on a vessel such that a lower portion of the drum is positioned below a waterline of the vessel, and a wiper member on the vessel, the wiper member positioned and configured to wipe oil from the drum below the surface of the water body. Wiped oil is collected below the surface of the water body through a series of collection tanks. A dryer wiper wipes water from an unsubmerged portion of the drum to improve oil uptake.

Abstract: An integrated system for diverting and reducing the size of waste materials in an effluent stream comprising a frame having a bottom housing and a top housing and mountable in the stream. A grinder unit is mounted to the frame bottom housing and comprises a cutter assembly positioned in the stream and a drive mechanism coupled to the cutter assembly to rotate the cutter assembly. The drive mechanism may be electric or hydraulic. A diverter unit is mounted to the frame. It may be a single diverter or dual diverters. The diverter unit comprises a cylindrical drum rotating on a stub shaft. It may also be a helical coil. A drive assembly operably couples the drive mechanism to the drum shaft to rotate the cylindrical drum as the cutter assembly rotates. In operation the diverter unit is positioned side by side to the grinder unit to diverts solids in the effluent stream toward the grinder unit for size reduction. Side rails are employed for flow control around both the diverter unit and the grinder unit.

Abstract: A screening device useful in water and waste water treatment plants separates fluid flow into two streams. The screening device is perforated so that solids having a predetermined cross-section will be maintained within a first fluid stream, and a portion of the fluid flow that has been screened of solids will flow into a second split-off fluid flow. The streams may go to different locations; only the first stream need be processed for the solids. The screening device is preferably cylindrical or another surface of rotation or a section of such a surface, and rotates. These features help maintain the screening device free of solids, and supplemental cleaning devices may also be used.

Abstract: The invention relates to a filter assembly for producing a paste-like filter cake and a substantially solids free filtrate or permeate. The filter assembly includes a substantially cylindrical member having an exterior foraminous surface, the cylindrical member being mounted on an elongate shaft for rotating the surface about an axis defined by the shaft. The exterior foraminous surface is covered by a microporous filter media. A stationary housing is positioned adjacent a portion of the exterior surface of the cylindrical member. The stationary housing includes a filter feed inlet and a sealing device and is spaced from the exterior surface a distance sufficient to enable cross flow relative to the filter media. Unique filter seal members promote retention of fluid to be filtered in a filtration area defined by the housing and cylindrical member. As the cylindrical member is rotated about the axis, a cake removal or membrane cleaning device removes filter cake from the filter media.

Abstract: Apparatus and a method are presented for the mechanical removal of moisture from a filter cake. Differential pressure causes the flow of a treatment fluid through the filter cake. The treatment fluid displaces liquid originally present in the filter cake to preent cracking of the filter cake.

Abstract: An apparatus for de-watering sludge. A main shaft is rotated about a longitudinal axis at a first rate. A screw shaft coupled to the main shaft is rotated about the longitudinal axis at the first rate. Screw flighting coupled to the screw shaft is rotated about the longitudinal axis at the first rate. A first and second stage drum are rotated about the longitudinal axis at a second rate. Sludge is introduced to a first area defined by an outer surface of the screw shaft and an inner surface of the first stage drum. Moisture is removed from the sludge through a first slot coupled to the first stage drum. The sludge is transported with the screw flighting from the first area to a second area defined by an outer surface of the screw shaft and an inner surface of the second stage drum, the second area being larger than the first area. Moisture is removed from the sludge through a second slot coupled to the second stage drum.

Abstract: An auxiliary filter for removing residual particles from already filtered cutting fluids used in metal cutting machines, the auxiliary filter including a hollow wheel member rotated in a sealed tank into which the filtered liquid flows. Pressurized liquid passes through a fine screen on the perimeter of the rotating wheel to capture any residual particles. A high pressure backwash jets are directed at the screen as it rotates past an array of nozzles, and a collection trough draws any dislodged material away and out of the tank.

Abstract: An apparatus for removing sludge is applied to a generally cylindrical filter for use in an electric discharge machine. The filter removes sludge in a process solution used in the electric discharge machine by flowing the process solution from an inner periphery surface to an outer periphery surface and/or the outer periphery surface to the inner periphery surface of the filter. A filter support device holds the filter rotatively with the central axis thereof as the central figure and inclining the central axis by a predetermined angle to the horizontal direction. The filter support device also includes cams for providing rotational driving force and successive impactive force to the filter. A motor provides rotational driving force to the cams. Sludge storage may receive the sludge falling from the filter. The filter support device may further alternate the inclined direction of the filter in a predetermined cycle by rotating with an axis perpendicular to the central axis as the central figure.

Abstract: A self-cleaning fuel oil strainer, coupled to a continuous fuel flow, that includes a pair of canisters, each having a cylindrical wedge wire fuel oil filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of fuel oil into the two dislodge subchambers. The particulate contaminants and the limited amount of fuel oil then pass through the apertures at a high velocity and into the drain subchamber which exits through the drain.

Abstract: A method and device for drainage of a fibrous suspension where a converging drainage gap is formed between a first area and a second area. At least one of the first area or the second area is water permeable. A curved drainage zone is connected to the converging drainage gap. The first area moves relative to the second area. A fibrous suspension is introduced into the converging drainage gap. The fibrous suspension is transported by one of the first area and the second area as a layer. The first area and the second area are compressed closer together thereby causing drainage from the fibrous suspension through one of the first area or the second area.

Abstract: A system for filtering fluids uses the pressure differential across a filter element between an internal filter volume and an external filter volume to control the rate of fluid flow through the filter element. The internal filter volume communicates with a backwash volume contained in the external filter volume. The backwash volume may be movable relative to the filter element to clean accumulated filtrate from the filter element through backwashing. By increasing the pressure in the internal filter volume, the rate of backwashing can be increased while the rate of fluid flow into the internal filter volume is decreased. Particularly when the filter element becomes clogged, damage to a filter caused by an excessive pressure differential across the filter element may be decreased.

Abstract: A medium is separated into a solids-containing component and a liquid component. The latter flows through a filter. Clogging of the filter is avoided in that the latter is moved relative to the medium perpendicularly to the flow direction of the liquid through the filter element. At the same time, the medium is agitated.

Abstract: An oil-water separation method to separate oil-contaminated water into clean, filtered water for use. The method comprises filtering prefiltered, coalesced oil-water in an oleophobic depth-type filter.