Abstract: As shown for example in FIG. (5), the strainer (13) has a body (2) that defines a plurality of inlet holes (3). Each of the inlet holes (3) is in fluid communication with a hollow internal chamber. In use, liquid is sucked through the holes (3), thereby straining out larger contaminants such as rocks and stones, into the hollow internal chamber and then out the outlet. The majority of the strainer (13), is formed from a resilient deformable material that allows opposed sides of the internal chamber to be brought into contact with each other in response to the application of a compressive force. Once the force is no longer being applied, the resilience of the material allows the body (2) to resiliently return to substantially its pre-deformation shape.

Abstract: A belt filter apparatus for treating material to separate solid and liquid components comprises an endless belt structure adapted to circulate around a path incorporating guide roller structures around which the belt structure passes. The endless belt structure comprises an elongate belt portion of water permeable material, and has two opposed longitudinal edges. A zipper releasably connects the two longitudinal edges together to form a tubular structure with a flexible sidewall. The circulating path includes an assembly zone where the longitudinal edges are brought together and connected by the zipper to form the tubular structure, and a disassembly zone at which the zipper is released to separate the longitudinal edges and open the tubular structure. Means are provided for compressing a portion of the tubular structure to express liquid from the material contained in the tubular structure. The liquid discharges from the tubular structure through the water permeable belt portion.

Abstract: A screen changer for filtering a thermoplastic material heated to a flowable state comprises a filter head defining a melt passage for the heated thermoplastic material, and a guide channel having entry and exit sections arranged on opposite sides of the melt passage. The entry and exit sections are configured and arranged to direct a continuous screen filter along a guide path extending transversely across the melt passage from an entry side to an exit side of the filter head. The screen filter is incrementally advanced along the guide path. An internal first cavity is provided in the filter head on an upstream side of the filter screen and at a juncture of the melt passage and the exit section of the guide channel. The first cavity is positioned to receive contaminants accumulated on the screen filter. A waste removal mechanism removes contaminants from the first cavity.

Abstract: A coal slurry dewatering arrangement includes a filter belt press with a filter belt having first and second sides, the first side being water-impermeable and the second side having pores and being water-permeable, wherein the water-permeable side includes a layer of water-absorbent material.

Abstract: Disclosed is a process for separating solids from liquid in a slurry. The process is characterized by using two filtration media. One filtration medium contains less than 10 mm in thickness of a filter cake containing the solids, and the other filtration medium contains at least 10 mm in thickness of a filter cake containing the solids. The second filtration medium has a higher separation efficiency that the first filtration medium. The process is particularly useful for separating terephthalic acid solids from an oxidation product slurry.

Abstract: A method of controlling separation of solid particles from a fluid is described, wherein the separation is carried out by means of a sieve apparatus (10) which includes an endless sieve cloth (1) structured in a manner allowing it to rotate around at least two spaced-apart turning rollers (14), wherein the method comprises: arranging at least two sieve cloth sheets (1?) in series in the direction of movement of the sieve cloth (1), wherein at least two of the at least two sieve cloth sheets (1?) have dissimilar filtering characteristics; controlling the endless sieve cloth (1) by rotating the turning rollers (14) in such a manner that a desirable amount of solid particles and fluid is supplied to at least one of, or is distributed between two or more of, the at least two sieve cloth sheets having desirable filtering characteristics. A sieve cloth for use in the method is also described.

Abstract: A belt filter apparatus for treating material to separate solid and liquid components comprises an endless belt structure adapted to circulate around a path incorporating guide roller structures around which the belt structure passes. The endless belt structure comprises an elongate belt portion of water permeable material, and has two opposed longitudinal edges. A zipper releasably connects the two longitudinal edges together to form a tubular structure with a flexible sidewall. The circulating path includes an assembly zone where the longitudinal edges are brought together and connected by the zipper to form the tubular structure, and a disassembly zone at which the zipper is released to separate the longitudinal edges and open the tubular structure. Means are provided for compressing a portion of the tubular structure to express liquid from the material contained in the tubular structure. The liquid discharges from the tubular structure through the water permeable belt portion.

Abstract: A machine or apparatus featuring a first processor and a second processor. The first processor is configured to receive a mixture of fluid, valuable material and unwanted material and a functionalized polymer coated member configured to attach to the valuable material in an attachment rich environment, and provide an enriched functionalized polymer coated member having the valuable material attached thereto. The second processor is configured to receive a fluid and the enriched functionalized polymer coated member in a release rich environment to release the valuable material, and provide the valuable material released from the enriched functionalized polymer coated member.

Abstract: The present invention relates to an apparatus for removing liquid from a suspension. More particularly, the present invention relates to a filtration apparatus using vacuum pressure, compressed air and radiant heat to facilitate extraction of water from a suspension and an air flow within the vacuum chamber to remove the evaporate as a cost-efficient and resource-efficient means of filtering and drying solids in large volumes of suspension to remove interstitial and chemically bound liquids, resulting in up to 100% total solids.

Abstract: A solid-liquid separating apparatus is provided with: a separating roll which has a substantially cylindrical shape with a plurality of through holes, which penetrate between an inner surface and an outer surface in radial direction thereof, and is rotatable in circumferential direction thereof; and a pair of separating filter cloths which is endless belts capable of traveling in a rotation direction of the separating roll and are wound around the outer circumference of the separating roll so as to overlap each other, wherein a material supplied between the pair of filter cloths is squeezed by being rolled together with the pair of filter cloths therebetween on the outer circumference of the separating roll, and the material is dehydrated by ventilating via each through hole.

Abstract: A screening installation includes, provided in a flume (5) conveying a fluid flowing with a total flow QE: a screening device (10) including a screen which includes at least one filter member in order to screen a fraction Q10 of the total flow, at least one first passage (31) in the flume which is adapted to allow a fraction Q31 of the total flow to pass such that QE=Q10+Q31, so long as the head loss between the upstream side and the downstream side of the screening device is less than a predetermined value, and at least one second passage (32) in the flume which is adapted to allow a fraction Q32 of the total flow to pass such that QE=Q10+Q31+Q32 when the head loss is greater than the predetermined value.

Abstract: A process for separating a first mother liquor stream is provided. The process comprises: separating a first mother liquor stream in a second solid liquid separation zone to produce a secondary wet cake stream and a second mother liquor stream; wherein the first mother liquor stream comprises water non-dispersible microfiber, water, and water dispersible sulfopolyester; wherein the second mother liquor stream comprises water and water dispersible sulfopolyester; and wherein the secondary wet cake stream comprises water non-dispersible polymer microfiber.

Abstract: A production apparatus and a production method of toner particles are provided which efficiently and stably reduce the water content of the wet toner particle cake obtained by separating and washing toner particles from toner particle dispersion in a production apparatus of toner particles granulated in a wet process. A wet toner particle cake 1 formed on a belt filter is aerated and dehydrated with air, and at the same time, sealing units 6 provided on the upstream and downstream sides of the aeration unit 3 can be operated to efficiently seal aeration air.

Abstract: An industrial separator and dewatering plant delivers an influent to an inclined rotating filter belt for filtering out solid matter from the influent. A wash water is sprayed on the return portion of the belt to dislodge residual solid matter captured within the belt. A dewatering portion has an auger screw positioned for receiving the solid matter and the wash water. The auger screw transports the wash water and the solid matter to a compression cage where water is driven out of the solid matter by compression as it exits the plant. Alternately, the solid matter and wash water may be delivered together to a plant exit. Excess wash water is able to drain from the auger screw through a separate drain.

Abstract: A coolant filtration system and method for use with one or more metal working machines. The system includes a housing, pump, conveyer assembly, drum assembly, and centrifugal separator. The housing includes a tank that receives and holds coolant coming out of the one or more metal working machines. The pump is used to drive the coolant through the coolant filtration system. A part of the conveyer assembly is disposed within the housing in order to carry-away workpiece chips from the coolant. The drum assembly is located near the conveyer assembly in order to filter the coolant. The centrifugal separator receives coolant processed by the conveyor and drum assemblies. The system can further include one or more fine filters for additional filtering of the coolant outputted by the centrifugal separator.

Abstract: A sewage solids separator and dewatering plant and method of use including a raw sewage inlet through which waste water enters the plant, and a baffle within the inlet for receiving and reducing kinetic energy, of the waste water. A curved ramp positioned below the baffle is enabled for directing the waste water to an inclined conveyor. The conveyor has a continuous belt enabled for passing water to a reservoir below the reservoir and for carrying solid matter to a top of the conveyor. The belt is stretched between an upper pulley and a lower pulley thereby establishing a linear path having a straight run of both an upper and the lower portions of the belt. A drag-out basin is positioned below the conveyor, and has an auger screw capable of removing the solid matter from the drag-out basin.

Abstract: Method for the liquid solid separation of material mixtures and suspensions in which the material mixture under pressure is fed into a closed chamber having at least one filter surface and a hydrostatic pressure is generated within said chamber for separating the liquid phase. After separating the liquid phase the chamber is opened and the filter surface together with the filter cake is removed from said chamber. The material mixture firstly is treated by the means of hydrostatic pressure of about up to 0.2 bar, wherein 80 to 90% of the fed volume is removed as filtrate. Thereafter the concentrated remaining volume is drawn off and is further treated in the closed chamber with a pressure of up to 5 bar. By reducing the volume of the chamber finally with a pressure of up to 50 bar the remaining filtrate is separated.

Abstract: A separation method for extracting a target 1 from a separation subject (101) in which the target (1) to be extracted and a non-target (2) are mixed. The method includes the steps of distinguishing the target (1) from the non-target (2); obtaining positional information of the target (1) distinguished; attaching a liquid to the target (1) based on the positional information; and extracting the target (1) from the separation subject (101) by bringing a catch member (140) into contact with the separation subject (101) such that viscosity of the liquid causes the target (1) to adhere to the catch member.

Abstract: Method for the liquid solid separation of material mixtures and suspensions in which the material mixture under pressure is fed into a closed chamber having at least one filter surface and a hydrostatic pressure is generated within said chamber for separating the liquid phase. After separating the liquid phase the chamber is opened and the filter surface together with the filter cake is removed from said chamber. The material mixture firstly is treated by the means of hydrostatic pressure of about up to 0.2 bar, wherein 80 to 90% of the fed volume is removed as filtrate. Thereafter the concentrated remaining volume is drawn off and is further treated in the closed chamber with a pressure of up to 5 bar. By reducing the volume of the chamber finally with a pressure of up to 50 bar the remaining filtrate is separated.

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 coolant filtration system and method for use with one or more metal working machines. The system includes a housing, pump, conveyer assembly, drum assembly, and centrifugal separator. The housing includes a tank that receives and holds coolant coming out of the one or more metal working machines. The pump is used to drive the coolant through the coolant filtration system. A part of the conveyer assembly is disposed within the housing in order to carry-away workpiece chips from the coolant. The drum assembly is located near the conveyer assembly in order to filter the coolant. The centrifugal separator receives coolant processed by the conveyor and drum assemblies. The system can further include one or more fine filters for additional filtering of the coolant outputted by the centrifugal separator.

Abstract: A ship comprises a bilge water sump collecting bilge water and contaminants. A first contaminant separation device is provided comprising a conveyor arrangement with an endless belt comprising adsorbing/absorbing material. The conveyor arrangement has a first portion submergible into the bilge water and contaminants in the bilge water sump, and a second portion being spaced from the first portion and provided with means for releasing adsorbed/absorbed contaminants from the conveyor belt and means for collecting the contaminants released. The conveyor arrangement is further provided with means for driving the endless belt along a moving path defined by guiding means.

Abstract: The present disclosure is directed towards systems and methods for the treatment of wastewater. A system in accordance with one particular embodiment may include a vacuum filter band system configured to receive a saturated ion exchange resin tank and to apply a water rinse to the resin to generate a resin slurry. The vacuum filter band system may further include a vacuum filter band configured to receive the resin slurry. The vacuum filter band system may also be configured to generate a mixed metal solution. The system may further include a metal specific purification system including a plurality of purification units configured to receive a continuous flow of the mixed metal solution, each of the purification units configured to target a particular metal from the mixed metal solution. Numerous other embodiments are also within the scope of the present disclosure.

Abstract: An industrial separator and dewatering plant has a filtering portion using an inclined conveyor belt for carrying away a watery cake from an aqueous mixture containing solid matter. The filtering portion further has a wash water spray nozzle directed at the conveyor belt so as to dislodge the watery cake penetrated within the conveyor belt. A dewatering portion has a compression auger screw positioned for receiving the dislodged watery cake and the wash water. An auger screw receives the wash water and cake which is transported to a compression cage where compression drives water out of the cake leaving a semi-solid cake which is pressed against a door where it exits the plant.

Abstract: A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement away from the particles.

Abstract: A system and method for automatically removing debris from a surface of a pool. The apparatus for cleaning debris from a pool surface includes a support and a conveyor belt supported by the support. The conveyor belt is inclined and includes upper and lower ends. The conveyor belt is driven from the lower end to the upper end. A diverter is used for diverting debris from the pool surface to the lower end of the conveyor belt. The diverter is connected at the lower end of the support and configured to be positioned outside a skimmer opening of a pool. The apparatus is positioned at the skimmer opening to receive floating debris prior to entering the skimmer opening. The conveyor belt moves the floating debris to the upper end of the conveyor belt. The debris is then deposited into a receptacle.

Abstract: A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement away from the particles.

Abstract: A device for treating cooling lubricants and chips of machine tools. The device includes a container for receiving the untreated mixture of cooling lubricant liquid and solids, an endless conveyor installed in the container for carrying off the collected solids from the container, at least one filtration unit disposed in the container for separating the cooling lubricant liquid from the solids, whereby the filtration unit is formed so as to be mobile and can be positioned as an insertion in the container over the lower run of the endless conveyor.

Abstract: A method for increasing the removal of a higher fraction of liquid from the press cake in any belt press is described. Specifically, the invention incorporates a series of rollers that create multiple pinch points to compress the solid fraction while removing liquid. After each pinch point, the solid material is allowed to separate from the belt, fall by gravity, and repack so that more liquid can be released at each successive pinch point than is possible if the material is fed to multiple rollers and pinch points in series without decompressing as is done is prior art.

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: A filter apparatus includes a endless filter belt loop disposed in an interior space within a tank which receives liquid to be filtered. The filter belt has a series of closely spaced parallel guide-flight bars attached which are successively engaged by an extendible element on a pivot plate which is periodically oscillated to under the filter belt. The bars are received in guide spaces to hold the filter belt in position over a filter support having openings allowing filtering flow therethrough. Collapsible sealed hoses partially filled with liquid are used as edge seals extending along the guide spaces over side edges of the filter belt and are expanded by engagement of an upper end of each of the hoses with a squeeze member on the pivot plate. The squeeze members are moved off the hoses when the pivot plate is oscillated to advance the filter belt during indexing to release the sealing pressure and allow filter belt indexing movement.

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 a flow determining device which determines the volumetric flow through 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, the flow level downstream of the screen and the volumetric flow.

Abstract: The invention relates to a method for extracting solids (23; 123) from a suspension (22; 122) containing the solids (23; 123) and suspension liquid (32; 132) in a continuously or virtually continuously operating filter device (10; 110) using a filtering material (26; 126), on the one side of which, the high-pressure side (30; 130), a higher pressure prevails than on its other side, the low-pressure side (42; 142), and which passes successively through a plurality of working zones (I-V; I-IV) of the filter device (10; 110) in a working direction (U), the suspension (22; 122) being supplied to the filtering material (26; 126) on its high-pressure side (30; 130) in a first working zone (I) and being filtered, the suspension liquid (22; 122) flowing through the filtering material (26; 126) on account of the difference in pressure between the high-pressure side (30; 130) and the low-pressure side (42; 142) while at least some of the solids (23; 123) are deposited on the filtering material (26; 126).

Abstract: A mechanism in a horizontal belt filter controls the position of the drainage belt to ensure its alignment with the vacuum pan. A section of belt rollers supporting the drainage belt is mounted on a movable structure capable of shifting the rollers laterally to the degree necessary to compensate for misalignments between the drain holes and the vacuum pan. The control operation is implemented with a detector capable of sensing the position of the drain holes in the belt with respect to the vacuum pan. A signal is sent to an actuator that causes the belt rollers to move laterally in the direction required to maintain alignment of the drain holes with the vacuum pan. A dual-drive system is preferably utilized to provide a more uniform force distribution along the drive pulley and to increase torque, thereby also advantageously increasing the capacity of the filter.

Abstract: A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement away from the particles.

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 horizontally traveling water screen for filtering debris from a wide flowing stream. The water screen, which may be realized by a foraminous modular plastic conveyor belt, is formed in an endless loop trained between drive and idle sprockets rotatable on generally vertical shafts. The upstream face of the water screen is oriented transverse to the flow and advances horizontally across the stream to drag debris to a cleaning and discharge station. Horizontally spaced hold down tabs extending outward of the inner surface of the loop hook onto and ride along a horizontal guide attached to a support frame for the water screen to prevent the screen from sagging.

Abstract: A candle filter includes an end portion, elongate interior structure extending from the end portions and defining a space for a fluid, and a membrane fabric for filtering a substance from the fluid as the fluid passes through the membrane fabric and into the space defined by the interior structure. The membrane fabric extends around the interior structure and to the first end portion. The membrane fabric includes at least one extending tab segment for manipulating to move the membrane fabric relative to the elongate interior structure. An associated method provides an operational candle filter.

Abstract: A method for increasing the removal of a higher fraction of liquid from the press cake in any belt press is described. Specifically, the invention incorporates a series of rollers that create multiple pinch points to compress the solid fraction while removing liquid. After each pinch point, the solid material is allowed to separate from the belt, fall by gravity, and repack so that more liquid can be released at each successive pinch point than is possible if the material is fed to multiple rollers and pinch points in series without decompressing as is done is prior art.

Abstract: A method and an apparatus for separating dry matter from liquid includes an enclosed separation environment capable of being pressure regulated. Within the enclosed separation environment, a suspension is brought into contact with at least one filter so as to accumulate dry matter on the at least one filter. The filter with the dry matter passes through at least one set of rollers such that liquid is removed from the dry matter on the at least one filter to form a substantially dry filter cake. Thereafter, the substantially dry filter cake is removed from the at least one filter. The above steps are performed in the enclosed separation environment either under vacuum or overpressure. The invention may be used in various fields such as the food industry.

Abstract: A mechanism in a horizontal belt filter controls the position of the drainage belt to ensure its alignment with the vacuum pan. A section of belt rollers supporting the drainage belt is mounted on a movable structure capable of shifting the rollers laterally to the degree necessary to compensate for misalignments between the drain holes and the vacuum pan. The control operation is implemented with a detector capable of sensing the position of the drain holes in the belt with respect to the vacuum pan. A signal is sent to an actuator that causes the belt rollers to move laterally in the direction required to maintain alignment of the drain holes with the vacuum pan. A dual-drive system is preferably utilized to provide a more uniform force distribution along the drive pulley and to increase torque, thereby also advantageously increasing the capacity of the filter.

Abstract: The present invention relates to a device for separating liquid and solid material from a mixture which includes a filter cloth for allowing through the liquid and holding back the solid material; a carrier belt for supporting the filter cloth with the mixture thereon, wherein the carrier belt is provided with one or more openings close to at least one of the side edges or at least eccentrically thereof; a support construction for supporting the carrier belt movable relative thereto; and a suction box arranged under the support construction and/or on the side of the carrier belt and connected to the optional openings in the carrier belt for extracting liquid from the mixture.

Abstract: The invention concerns a belt filter apparatus comprising a first belt filter section on which a mixture of fine material and a liquid can be placed hydraulically to create partially dry fine material and a second belt filter section on which the partially dry fine material can be placed in order to undergo a second drying cycle. The belt filter apparatus also includes means for mechanically placing the partially dry fine material from the first belt filter section onto the second belt filter section as well as a liquid collection arrangement for providing fluid communication between the first and second belt filter sections and a vacuum. In use the vacuum dries the fine material by drawing liquid through the permeable fabric of the first and second belt filter sections and into the liquid collection arrangement.

Abstract: There is a method of capturing, removing or collecting the particulate matter from a fluid containing a toxic liquid reaction and particulate matter produced from the reaction. The method includes partly or completely disposing a screen into the toxic fluid. Mixing the toxic fluid allowing the particulate matter to contact the screen. Moving the screen to capture the particulate matter on the screen. Removing the particulate matter from the screen by washing or scraping. There is also a cleaning apparatus to capture, remove or collect particulate matter from a toxic fluid. A cleaning apparatus contains at least a screen and a structure securing the screen. The cleaning apparatus can optionally include a scraping or washing means, a drive means, a flow inducer and a housing structure.

Abstract: A belt press solid/liquid separation apparatus is provided for separating organic mixtures with substantial amounts of moisture to produce separated solids with solids content of 50-90% while retaining 99% of the incoming solids in the filter cake. Specifically, the invention incorporates a double-belt press apparatus with a non-permeable upper belt, a highly permeable lower belt, a wedge type zone with adjustable spring compression, and a means for re-screening belt press filtrate with either a single belt press or multiple belt presses configured as a multi-step cascade of belt presses.

Abstract: A belt press solid/liquid separation apparatus is provided for separating organic mixtures with substantial amounts of moisture to produce separated solids with solids content of 50-90% while retaining 99% of the incoming solids in the filter cake. Specifically, the invention incorporates a double-belt press apparatus with a non-permeable upper belt, a highly permeable lower belt, a wedge type zone with adjustable spring compression, and a means for re-screening belt press filtrate with either a single belt press or multiple belt presses configured as a multi-step cascade of belt presses.

Abstract: Screening apparatus (101,901) for use at an overflow weir (301, 902) in a sewerage system. The apparatus comprises a continuous moving screen band (201, 902) and a band cleaning mechanism (608). A first portion (801) of the screen band is configured to move along the weir towards one of its ends, and a second portion (803) of the screen band is configured to move along the weir towards its opposite end. A steeper portion (805) of the screen band extends to an elevated position (806) above the first and second portions, and the band cleaning mechanism is arranged to remove solid matter from the screen at said elevated position.

Abstract: A belt filter for effecting separation of liquid from solids where, at the collection zone, a filter belt or belts is changed shape so as to provide a supporting shape to bold liquid, which is then fed into a nipping zone. In an embodiment there is a single belt used which is folded in a middle portion to provide the supporting shape.

Abstract: A method and apparatus for separating ferrous metal particles from non-ferrous metal particles suspended in a liquid, such as a coolant from a machining operation, in which mixed particle containing liquid is discharged across a horizontal, non-magnetic separating surface; the magnetic ferrous metal particles are captured by a magnetic force exerted by an array of parallel magnets disposed underneath the separating surface, the non-magnetic non-ferrous metal particles are washed by the liquid into a collecting flume from where they can be passed to a filtering station for removal from the liquid, and the captured ferrous metal particles are scraped from the separating surface and conveyed to a ferrous metal discharge by a scraper conveyor which moves transversely to the discharge direction of the liquid.

Abstract: A feedback control for a polymer dispensing system, which otherwise continuously adjusts the polymer feedrate so as to keep the measured streaming current of filtrate from a sludge dewatering process at one predetermined setpoint. The feedback control includes a video camera focused on sludge as it trails behind plows on a dewatering belt, a video image processing system for converting the video signal into single numbers known as “camera readings”, and a computer programmed both to compare them with a “camera reading” setpoint and to determine whether the filtrate charge is more positive or more negative than it normally is whenever the “camera reading” deviates from its setpoint by a threshold amount. A controller, activated by the computer, incrementally resets the polymer feedrate in such a direction as to restore the normal cationic charge of the filtrate.