Abstract: A sewer system water purifier comprised of a first tank receiving a sewer line from a toilet through a top portion thereof. The first tank has an exit pipe extending outwardly thereof opposing the sewer line. A second tank has a drainage pipe therein coupling with the exit pipe extending outwardly of the first tank. The drainage pipe extends downwardly within the second tank and has a first bent portion paralleling a bottom thereof. The second tank has gravel therein. The second tank has an exit pipe extending outwardly thereof opposing the drainage pipe. A third tank has a drainage pipe therein coupling with the exit pipe of the second tank. The third tank has a water pump disposed thereon. The water pump has two pipes extending inwardly of the third tank. The water pump serves to pump water from the third tank to a toilet and a sprinkler system.

Abstract: A coalescer system (10) for oil-in-water soluble oil emulsions utilized as coolants and cutting oils for machining processes in industrial plants, comprises a deep bed of granular hydrophilic media particles (24) to effect coalescence of insoluble soaps and reverse phase water-in-oil droplets. The coalesced insoluble soaps and reverse phase emulsions flow to the liquid surface in tank (12) along with other contaminants that have an affinity for the reverse phase oil droplets and insoluble soaps, all in the form of floating waste (26). The waste (26) is then discarded. Effluent coolant may be transported back into the cooling system. The system (10) increases the stable life of the oil-in-water emulsion, minimizes the formation of foam, and removes other abrasive or otherwise harmful nonhomogeneous contaminants from the soluble oil emulsion.

Abstract: Effluent is pumped into a first multistage, modular, vertical filter that extends from ground level to depth near or at the water table. A fluid accumulator, located at the bottom of the filter, accumulates water from the filter stages. The water in the accumulator is pumped into the surrounding soil by pressurizing it from a ground level pump. Fluid that accumulates around the filter is removed for irrigation. The filter and accumulator are removed as a single unit from well shaft for servicing.

Abstract: A method and materials for separating oil from water, using stacked disks to coalesce the oil, is disclosed. The method of coalescence allows configuration of systems which are compact, efficient, adaptable to modular configuration, and have a very high flow rate.

Abstract: A universal recycled wash water plant having a collector tank through which collected wash water and rinse water is channeled to a grease/oil/water separation tank which separates oil and grease from the water and which holds the oil-separated water in a pump compartment. The water in the pump compartment is pumped to two sand filter tanks which removes suspended trace oil and other suspended solids from the water received from the pump compartment. The water upon passing through the sand filter tanks is channeled to a balancing tank and pumped by means of a recirculating pump to a separator which removes solid particles up to six microns in size from the water received from the balancing tank. From the separator the water is channeled in desired proportions to a carbon filter and to a wash water tank. The carbon filter removes any remaining soap elements from the water before the clarified water is channeled into a rinse water tank.

Abstract: The invention is an antifreeze reclamation system that is designed for low volume processing over extended time periods. The system makes use of a tank that is preferably fabricated from a standard fifty-five gallon drum. Attached to the top of one end of the tank is a standpipe used for inputting used antifreeze into the system. A second standpipe is located at the top of the opposite end of the tank. The system functions by allowing gravity, buoyancy and time to separate the used antifreeze from entrained and dissolved impurities. The outputted liquid is mixed with new materials to restore it to its original, unused condition.

Abstract: Oil and water separation apparatus comprising a reaction chamber having an inlet through which a mixture of oil and water may be introduced. A reaction that extends upwardly from an intake opening therein located in the reaction chamber and out of the chamber. The apparatus also has an ozone generator and a conduit through which ozone may be channeled from the ozone generator into the upwardly extending reaction tube. A pump is provided for pumping water and oil upwardly through the reaction tube entrained with ozone and out of the reaction chamber. A filter is provided for oil oxidized to particulate form by the ozone.

Abstract: A grease separation system includes a main grease separator tank [11] which has a plurality of filters [23] suspended along the upper portion of the tank above a bed of grease absorbing material [28]. A perforated pipe [31] extends the length of the floor of the tank and discharges into a grease trap [33]. An admixing tank [52] is also included for admixing a grease absorbing material [60] with the grease [24] collected within the filters and rendering the grease bladeable for disposal into a landfill.

Abstract: A washable filter for purifying water includes an upwardly open, upright vessel. A raw water inlet is provided above a filtration zone in the vessel. A sedimentation chamber is arranged underneath the filtration zone. A vertical wall arranged above the sedimentation chamber divides the filtration zone into two filter chambers, such that the filter chambers are connected to each other only through the sedimentation chamber. One of the filter chambers is arranged below the inlet and an outlet for the filtered water is arranged above the other of the filter chambers. A heavy material pump connected to a sludge outlet pipe is arranged in the sedimentation chamber.

Abstract: A separator device to separate a mixture of immiscible liquids of different densities wherein one of said liquids is in a discontinuous phase. The separator device includes a container having an inlet for the mixture of immiscible liquids and an outlet for removing one of the liquids after separation. A drain is provided to remove the discontinuous phase liquid after separation. Randomly arranged, loosely packed, coalescing medium within the container encourages coalescence and agglomeration of the discontinuous phase liquid.

Abstract: A pour-through pitcher filter assembly includes a compact filter element including a thin annular disk of molded activated carbon and a peripheral annular seal element. The seal element allows the filter to be replaceably mounted in the lower end of a plastic reservoir, which reservoir is adapted to be supported in the top of a pitcher for receiving filtered water. The reservoir may be made by a blow molding process and includes an integral bellows member which is manually collapsible to pressurize the interior of the reservoir to initiate gravity flow through an initially dry filter element. The seal element utilizes a synthetic rubber material and is preferably insert molded around the carbon filter disk.

Abstract: Apparatus for separating contaminant from water, the contaminant being of lower density than water. The apparatus comprises a settlement chamber, initial separating means, and an entry port for introducing the liquid to be separated into the initial separating means for flow therethrough into the settlement chamber. A contaminant outlet opens from an upper region of the settlement chamber. A pump intake is located towards the lowermost part of the settlement chamber, and feeds a pump. The outlet from the pump is directed to a molecular separation filter capable of separating water from contaminant. Water discharges from the molecular separation filter, and can be further treated by an optional activated carbon filter. Contaminant leaving the molecular separation filter is directed back into the initial separating means.

Abstract: A separator for removing oil-like substances from water using vertical columns of coalescing media to then enhance separation of the two phases. The coalescing media is an inert packing material having surfaces to enhance coalescing without significant resistance to flow. Final oil removal is achieved by a vertical column of charcoal pellets. The separator is of particular value in the processing of oil/water discharges from air compressing systems. This produces water that can be discharged in an environmentally safe manner to conventional sewers, etc. The oil is held in a convenient storage vessel for ultimate disposal. No pumping devices are needed in the separator as flow is provided either by the pressure in the outlet from the compressor system, or by gravity from a feed tank. The vertical columns are arranged within a cylindrical vessel to minimize floor space and plumbing. The oil concentration in the product water is below current EPA standards.

Abstract: An assembly for removing wash water for washing filters containing granular filter material, which are washed simultaneously with water and air, such as those employed especially in water treatment, and recovering the particles of granular filter material entrained by the water during the washing which includes a collecting member having calibrated holes for collecting and removing dirty water, internal and external partitions placed on each side of the collecting member, defining a water recovering zone inside the internal partitions and between the internal and external partitions, tranquil flow zones promoting the separation, by downward concurrent settling of the particles of granular material and of the dirty water to be removed, and a baffle intended to avoid disturbing the preceding zones by the water/air/granular material three-phase mixture formed during the washing, placed under said zones and directing the three phase mixture towards an external degassing zone where the air is removed before the re

Abstract: Separation of oil from an aqueous condensate is effected by feeding the condensate into the headspace of a liquid pool containig separation tank so that a layer of oil will settle on top of water in the pool. An oil-receiver tank above the separation tank and connected thereto by a vertical pipe, also has a liquid pool therein above which a head space at sub-atmospheric pressure exists. Oil in the layer is accessed with a lower entry to the vertical pipe submerged below the separation tank liquid level and ascends into the pipe and upwardly to the oil-receiver tank, the oil ascent being accompanied by descent of water from the liquid pool in the oil-receiver tank. When the oil-receiver tank and an upper section of the vertical pipe are filled with oil only, the oil-containing tank can be drained. Separation operation can resume following reestablishment of the liquid pool in the oil-receiver by inletting a quantity of clean water thereto.

Abstract: Apparatus for separating oil from an oil/water mixture. The mixture is introduced into a vessel through entry ports and passes through a coalescing filter, flowing therethrough into a settlement chamber. Separation of oil and water occurs in the chamber and oil flows therefrom through an outlet to a waste collection vessel. Water is taken from the lower part of the chamber through a pipe and passes through a sorbent bed prior to discharge through an outlet located at a level below the level of the oil outlet opening.

Abstract: Disclosed herein is an ion-exchange treatment apparatus for dispersions, which comprises (1) a main circuit including (a) a first separation means for separating coarse particles among dispersoids from a raw dispersion supplied thereto, (b) an ion-exchange treatment column containing a particulate ion-exchange resin having a single polarity, (c) a second separation means for separating the remaining dispersoids from the dispersion subjected to the ion-exchange treatment and (d) a flow path line for causing the means (a), (b) and (c) to communicate in series, and (2) a circulating circuit for returning at least part of the dispersion treated in the second separation means (c) to the first separation means (a). Another apparatus in which at least one combination of a separation means and an ion-exchange treatment column containing a particulate ion-exchange resin having a single polarity is arranged further in the main circuit is also disclosed.

Abstract: Oil and water separated from the oily condensates produced by the operation of various machinery, particularly air compressors. A large tank having turbulence-free primary and secondary separation chambers receives the oil and water mixtures and separates the oil from the water by a two-phase gravity separation. A third phase of oil and water separation is provided by an external activated carbon filter to produce a clean, sheen-free water.

Abstract: A water container assembly for drinking water includes a purifying unit located at the top of a container and mounted within the container. The purifying unit includes at least one filter having an outlet which communicates with the interior of the container. Water may be placed in the top of the purifying unit and then be purified as it passes through the filter and is discharged into the container.

Abstract: A system for purifying water is provided having a series of filtering systems connected in series in a predetermined order along a flow path of the water to be purified. The filtering systems used in the invention include air striping, aeration, gravity separation, inclined plate coalescing separation, diffused air floatation, metallic oil attraction, static solid separation, hydrocarbon adsorption and absorption, chemical flocking, ozone, and coalescing centrifugal separation. The combination and relative order of placement of these filtering system acheives an improved filtering result.

Abstract: A method of repurifying water from a public supply, comprising the steps of:taking water to be repurified continuously from the public supply;filtering the water slowly through a volume of particulate material; andaccumulating the filtered water to provide a store of repurified water for later use as and when required.According to a second aspect of the present invention, there is provided an apparatus for repurifying water from a public supply, comprising:a water inlet adapted for connection to the public supply and operable to take a continuous flow of water from the supply;a filter comprising a volume of particulate filter material and arranged to receive the water from the water inlet;a container arranged to receive filtered water therefrom and to store the filtered water;and a water outlet connected to the container and operable to draw off filtered water as and when required.

Abstract: A system for on-site recovery of reusable industrial waste components, such as solvents, from a liquid waste stream includes a trailer that is internally partitioned to separate system components through which the waste stream passes in a first partitioned section of the trailer from support and control components in the second trailer section. Input waste is fed into a horizontal thin-film evaporator within the first trailer section, while steam is fed in a closed loop through the evaporator from the second section of the trailer for evaporating volatile solvents in the waste stream, and thereby separating the volatile solvents from non-volatile liquid and solid components of the waste stream. The evaporated volatile solvents are fed to a heat exchanger, again enclosed within the first partitioned section of the trailer, for recondensation through heat exchange with a coolant fed to the heat exchanger in a closed loop from the second trailer section.

Abstract: Plant to precipitate suspended matter out of water, such as surface run-off water, industrial waste water, biologically treated waste water and landfill leachates with in-pipe flocculation, a filter filled with granular filter material situated above the sedimentation tank of the plant the direction of flow through which is from top to bottom and a backwash tank and whose subsequent sedimentation and filtration stages comprise the following features: that the backwash tank for filtered water is situated above the filter; that a float seals off an aperture with an enlargened cross-section connecting the filter with the backwash tank in a position raised by buoyancy; that a bypass directs the treated filtered water past the float to the backwash tank if the said aperture is closed off; and that the sludge outflow pipe in the floor of the sedimentation tank and the sludge valve in the sludge outflow pipe are directed against gravity to such an extent that when the sludge valve in the sludge outflow pipe is opene

Abstract: A system for removing impurities from liquids wherein the liquid is forced upward through several zones, the first zone being a bundle of tubes having a helical shape to present an inclined path where settling of particulates back down the tube occurs, then through a stack of filter modules which are over the bundle of tubes and contain treatment media, the arrangement of the filter modules being such that the passage of fluid in the upward direction removes particulates before flushing through the treatment media and agitates the treatment media so as to prevent packing. The helical form of the settling tubes and the modular arrangement provides a compact and inexpensive structure and great convenience for maintenance. The preferred cross sectional shape of each tube is oval to increase settling rate.

Abstract: A filter system for achieving continuous filtering by the provision of three filter chambers disposed about a common vertical axis, each containing a filter bed comprised of buoyant particles through which the fluid to be filtered is passed in an upward direction and wherein provision is made for rehabbing the beds of particulate material as they become filled with solids, preferably in succession to enable continuous operation.

Abstract: A corrosion product monitoring system and method are described using a recirculation loop including a sample line, a particulate collection vessel, a recirculating pump, a microporous membrane "cross-flow" filter, and valves to control the flow rate and pressure of a fluid sample taken from the secondary fluid system of a nuclear power plant. The liquid sample is processed at a constant flow rate and temperature. When a relatively short time has elapsed in a trial sample run to stabilize conditions in the sample line, an actual sample run is started by feeding sample into the loop. Non-soluble, particulate concentration increases in the filter and particulate collection vessel as the run progresses. The permeate of soluble contaminants is passed through an ion exchange column to concentrate soluble ions in the sample. The filter is backwashed on a timed cycle by filtered water pressurized by a pump, or gas pressure, by realigning the system valves.

Abstract: A method of repurifying water from a public supply, comprising the steps of:taking water to be repurified continuously from the public supply;filtering the water slowly through a volume of particulate material; andaccumulating the filtered water to provide a store of repurified water for later use as and when required.According to a second aspect of the present invention, there is provided an apparatus for repurifying water from a public supply, comprising:a water inlet adapted for connection to the public supply and operable to take a continuous flow of water from the supply;a filer comprising a volume of particulate filter material and arranged to receive the water from the water inlet;a container arranged to receive filtered water therefrom and to store the filtered water;and a water outlet connected to the container and operable to draw off filtered water as and when required.

Abstract: A flushing water-circulation type flush system to purify living water or sewage into clean water. Water discharged from a toilet is directed successively to a filter bed unit having filter material therein, to an aeration unit, to a settling unit where solids are settled out, to a pH regulation unit containing an adsorber column having activated carbon therein, the pH unit also containing a source of calcium carbonate, with the adsorber extending therethrough. Outflow from the adsorber is passed through a sterilizer unit to a flushing water unit which serves as a source for supplying flushing water to a water reservoir for the toilet.

Abstract: In a process and apparatus for the biological purification of water by means of a closed percolating filter operated with pure oxygen and/or air, and an upward-flow filter disposed downstream of the percolating filter, with flotation filter material therein, saturation of the gas cushion predominantly containing oxygen in the percolating filter is controlled by selection of the operating pressure in such a fashion that the oxygen supply corresponds to the biochemical oxygen demand of the water on the one hand, while on the other hand a residual oxygen content dissolved in the water permits continuation with a biological fine purification operation in the upward-flow filter. The apparatus comprises a first chamber with the percolating filter, the water flowing downwardly therethrough, and a second chamber with filter material through which the water flows upwardly.

Abstract: An apparatus for purifying and neutralizing residues from furnaces burning liquid or gaseous fuels comprising a settling tank having an inlet for the liquid containing the residues, at least one oil absorption body in the settling tank, and a clean water tank separated from the settling tank by at least one filter. The pH in the clean water tank is raised, and a filtration unit contains activated carbon between the clean water tank and outlet.

Abstract: Oil contaminated ground water is purified by immersing one pump into the oil layer in the underground formation and another pump into the water layer in the underground formation and pumping the oil and water into, respectively, an oil storage tank and an oil/water separator. The water being pumped into the oil/water separator contains small amounts of emulsified oil which is separated from the water in the separator and forwarded to the oil storage tank. The water from the separator is passed through a series of filters to remove any trace amounts of oil present in the water so that the oil level in the purified water does not exceed 0.9 parts per billion.

Abstract: An apparatus is disclosed for improving the separation of fluids having different densities which apparatus employs a velocity reducing distributor for directing fluids in a vertical direction through a bed of packing to coalesce the fluids and a means to alter the direction of flow of the coalesced fluids to a horizontal direction. The disclosed apparatus is of particular advantage with respect to the gravitational separation of fluids having different densities which comprise an aqueous phase and a hydrocarbonaceous phase.

Abstract: A separator for continuously separating a mixture of immiscible liquids of differing densities into the constituents of the mixture including a vessel, a first upper outlet for the lower density constituents, a second upper outlet for the higher density constituents, an inlet in the vessel for the mixture located below the outlets, a conduit interconnecting the vessel above the inlet and the first outlet and a further conduit opening into the vessel below the inlet and connecting the interior of the vessel and the second outlet.

Abstract: A system for processing and reclaiming machine tool coolant wherein filtering apparatus mounted upon a portable frame is transported to the machine tool and includes pumps for cycling coolant from the machine tool coolant reservoir through coarse and fine filters to remove contaminating foreign matter, including bacteria. The apparatus includes an accumulating reservoir receiving and supplying pumped coolant and the pumps are controlled by float-operated switches maintaining a sequence of pump operation to assure efficient pump operation.

Abstract: Liquids can be separated from the solids contained in slurries, sludges, etc. by forcing a liquid-permeable fabric, downward into the slurry so that solid materials are retained below the liquid-permeable fabric and liquids can be pumped or drained from above the liquid-permeable fabric. Apparatus is provided, comprising liquid-permeable fabrics and weighting means.

Abstract: Liquid which has been partially clarified in the settling zone of a clarifier tank is channelled through a filtration compartment containing a buoyant particulate filtration media. The media particles are periodically agitated so that trapped solids are separated from the media and retained in the clarifier tank.

Abstract: An apparatus is disclosed for improving the separation of fluids having different densities which apparatus employs a velocity reducing distributor for directing fluids in a vertical direction through a bed of packing to coalesce the fluids and a means to alter the direction of flow of the coalesced fluids to a horizontal direction. The disclosed apparatus is of particular advantage with respect to the gravitational separation of fluids having different densities which comprise an aqueous phase and a hydrocarbonaceous phase.

Abstract: Apparatus is provided for separating liquids and particularly water and oil. The separating apparatus includes a tank containing two coalescent cells or units, one of which receives the liquids directly from a supply pipe and immediately disperses the liquids through a perforate recess into the cell. The liquids are partly separated in that cell and further in the second cell. Oil is separated from the top of the tank into a separate chamber and water is separated from the bottom into another chamber from which it is discharged and can be recirculated. The cells, which contain bodies with a high surface-to-weight ratio and are made of a material having an affinity for oil, are readily removable from the system for cleaning or replacement of the bodies.

Abstract: A reactor for aerobically or non-aerobically treating a fluid flowing from the bottom to the top of the reactor through a fluidized bed of granular material. The reactor includes a base having an orifice therein, through which fluid flows into the reactor and in which gas is added to the fluid. A horizontally extending plate surrounded by a supple membrane faces the base and the orifice. The plate and the membrane form a valve for preventing fluid from the reactor from entering the orifice in the event fluid flow into the reactor ceases. The gas entrains the granular material so that when the gasified fluid passes upward through the granular material a three-phase liquid-gas-granular material mixture is produced. The upper portion of the reactor includes a device for disembedding the granular material from the fluid, a device for degasing the three-phase liquid-gas-granular material mixture, and a device for separating the granular material from the fluid to produce a fluid discharge.

Abstract: Apparatus is provided to allow a relatively high pressure differential to build up across the filter element and layer of filter media in a filter aid filtration vessel.A process and apparatus are provided for reusing filter media in a filter aid filtration system.A process and apparatus are provided for drying filter cake in a filtration vessel to facilitate its disposal. Pressurized gas is used to assist in blowing the filter cake off of the filter elements.A process and apparatus are provided for draining the heel of a filter aid filtration vessel as filtrate.

Abstract: A filtration system is provided for a dry well in the form of a buffer tank made of concrete to remove sediment and pollutants from water supplied from a header to an inlet pipe in the tank, so that the water exiting from an outlet pipe is free of particulate matter and pollutants. This is accomplished by providing a sediment pit and a baffle at the inlet side of the tank and then passing the water through a multiple stage set of filters having different aperture sizes. These filters remove particles and pollutants from the water as it passes through the buffer tank on its way to a dry well drain pipe attached to the outlet of the buffer tank.

Abstract: Apparatus for separating solid particles, such as amalgam waste from the waste water from dentists' surgical units, employs at least one filter body through which the liquid flows and which consists of a filter medium enclosed between two perforated walls, and at least one sedimentation zone. The filter medium consists of balls of alumina having a diameter of 0.05-15 mm and a density such that the balls float in or are carried along by the liquid flowing through the filter body. The balls, which do not fill out the entire volume between the perforated walls (although they fill out the cross-sectional area of the filter body), rub against each other in the flowing liquid, so that the filter body is self-cleaning.

Abstract: Oil-water mixtures are by-products of a number of known commercial activities such as crude oil production and power plant operation. Disposition of such mixtures in most all cases is prohibited by environmental regulation. Disposition may be effected, however, after separation of the oil from the water. This separation may be accomplished in a deepbed type filter. Where the oil in the water is unusually viscous or has a waxy, tar-like, or sticky consistency, for example, rejuvenation of the filter bed is enhanced by the addition of a small amount of a solvating liquid to the oil-water mixture before filtering.

Abstract: A filter system wherein there is a first chamber containing fluid at a predetermined level, a shroud positioned in the first chamber immersed in the fluid, said shroud defining a downwardly-open second chamber, a quantity of discrete, buoyant bodies supported in the shroud by flotation, said discrete, buoyant bodies defining a filter media, a conduit connected to the top of the shroud for delivering fluid to the shroud at a pressure to displace the discrete, buoyant bodies downwardly therein as the fluid is forced downwardly into the shroud and into the lower part of the first chamber below the shroud, a second chamber surrounding the first chamber, a conduit connecting the top of the shroud with the second chamber, a conductor connected to the bottom of the second chamber providing an outlet from the bottom and valves in the several conduits operable on the one hand to admit fluid into the shroud and to permit fluid to be withdrawn from the third chamber while blocking flow of fluid from the first chamber to

Abstract: An internally baffled, horizontal flow, vertical oil separator or skimmer for the flotation and removal of oil from mixtures of oil and water has internal baffles that compel horizontal flow of a vertically elongated cross-section of fluid in the vertical vessel. The skimmer is of particular utility on offshore platforms where deck space is extremely expensive and limited.

Abstract: A single enclosed chamber includes a lower destabilizing area, a central filtering and coalescence area containing coalescence material, and an upper flotation and separation area. Emulsion is introduced into the lower destabilizing area and is destabilized therein. The emulsion is then passed upwardly into the central filtering and coalescence area. The dispersed phase of the emulsion is attracted to the coalescence material in the form of droplets, and as the emulsion continues to pass upwardly therethrough the droplets grow in size. During passage of the emulsion through the filtering and coalescence material, matter in suspension is filtered from the emulsion. Within the flotation and separation area is located a separation device including a lower convergent portion and an upper divergent portion.

Abstract: A device for separating a mixture of, for example, oil and water consists of a number of elements treating the mixture in stages, said elements being arranged in overlying position in order to manufacture a compact device.

Abstract: In the manufacture of metal powder by the water atomization of liquid metal, a batch of powder and water together constituting a slurry is pumped into a settling tank having a separate receptacle constituting the bottom of the tank. A filter bed is provided in the receptacle and the powder settles on to the filter bed. Excess water is drawn off from the receptacle which is then removed from the upper part of the tank and a cover is fitted. A differential pressure is then applied between the powder and the underside of the filter bed to suck out more of the water leaving the powder with a low water content on the filter bed.

Abstract: The invention refers to a device for separation of two liquids in a common mixture from each other, said liquids having different densities and being non-soluble in each other. The device comprises a pressure-tight vessel, which contains a charge of a high-porous material, which is resistant to the mixed liquids to be separated and has a high surface ratio and small flow resistance. The liquid mixture is introduced under pressure through at least one inlet conduit into a chamber located within the charge in the vessel but free from the charge material, an outlet for the heavier liquid being disposed in the bottom of the vessel in order to bring said liquid to flow substantially vertically and downwardly through the vessel, after which the two liquids each are carried to an individual spillway.

Abstract: A separator suitable for the separation of a first liquid of relatively lower specific gravity and a second liquid of relatively higher specific gravity from a liquid mixture containing both liquids, the liquids being mutually immiscible, the separator comprising an inlet for introducing the mixture into a first separation zone so constructed and arranged as to promote the separation by gravity of a substantial part of the first liquid from the mixture, a first liquid outlet for the discharge of separated first liquid from the separator, a second liquid outlet for the discharge of separated second liquid from the separator, means for causing first liquid separated in the first separation zone to pass to the first liquid outlet, means for causing the remaining liquid mixture containing a minor proportion of the first liquid and a major proportion of the second liquid to pass towards the second liquid outlet along a flow path including a part extending downwardly through a second separation zone partially fille