Abstract: An integrated control module for connection to a fuel-water separator for controlling the drainage of water from the fuel-water separator includes a water-in-fuel sensor having a pair of spaced-apart probes, a drain valve whose open or closed condition is controlled by a solenoid, an electrical connector for receiving input power and a control circuit arranged with first and second circuit portions which cooperate so as to control the energizing of the solenoid and thus the opening or closing of the drain valve based on the resistance between the pair of spaced-apart probes. The integrated control module is designed to attach to either a sidewall or a base of the fuel-water separator so that the probes extend into the interior of the fuel-water separator into a region where separated water accumulates. The resistance between the probes is then used as a means for sensing an average probe voltage which in turn determines the state of the solenoid.

Abstract: A separator includes a barrier 53 for retaining solid material thereon and an automatic mechanism for alternately preventing and allowing the flow of liquid to the separator outlet. When the flow is prevented, the liquid backs up through the barrier and washes the solids to a solids collection region 55. In one embodiment, the automatic mechanism includes a pivoted flap 101 and, in another embodiment, a siphon.

Abstract: An oil absorption filter for extracting free oil from the used wash water of a laundry has platforms which extend in parallel and laterally across a tank, but do not reach across the total length of the tank so as to provide an avenue of fluid flow between the platforms.. Multiple entrances are provided into the tank to resulting in a slow flow of used wash water into the tank so as to encourage free oil to separate from the used wash water. Hydrophobic socks are vertically arranged in rows and placed through holes in the platforms. A partitioned pumping chamber is provided with an entrance proximate to the bottom of the tank which is the only avenue of entry for oil-filtered water to access the pumping chamber. A sump pump connected electrically connected to a level float pumps the oil filtered water out of the pumping chamber and out of the oil filter.

Abstract: The present invention relates to a system which makes it possible to remove undesirable liquids, generally an aqueous phase, which precipitate to the bottom of tanks for storing liquid products. Use is made of a drainage device (30) which comprises a concave body (31), a seat (26), and an interface float (8) which has a plug portion (25). This interface float (8) is designed to sink into the product and to float on the aqueous phase. As the level of the aqueous phase drops, the plug portion (25) settles sealingly on the seat (26), halting the drainage operation since all the accumulated aqueous phase has already been drained off. The drainage system may be automatic or manual. In the former case, use is made of a sensor (12) for detecting the presence of an aqueous phase and commanding the process of opening a shut-off valve (11) and allowing drainage of the accumulated aqueous phase.

Abstract: An environmentally safe and compatible filter and dehydrator apparatus for dehydrating and filtering impurities from fuel materials having a filter housing, a filter element composed of non-metallic, environmentally safe material and a water sensor used to detect the presence of water and generate a signal in response thereto to automatically engage a pump to remove a quantity of separated water from the filter housing, in the absence of allowing air to enter the filter housing. While processing fuel through the filter housing, a natural fuel/water contact forms within a lower portion of the filter housing. As fuel material is filtered and the fuel/water contact rises within the filter housing, the fuel/water contact approaches the water sensor. When the water sensing means detects the presence of water, the water sensor generates a signal to engage a pump to remove a quantity of separated water from a lower opening in the lower portion of the filter housing.

Abstract: The invention relates to the treatment of waste water containing a harmful ion such as a heavy metal ion or fluorine ion by the coagulating sedimentation method using an inorganic coagulant such as an iron compound or an aluminum compound. After separating treated water from the sediment (sludge) in which the harmful ion is incorporated in insoluble form, the pH of a mixture of the sediment and water is suitably adjusted to cause elution of the harmful ion from the sediment. Then the sediment is separated from the eluate and reused as an inorganic coagulant. By reusing the sediment in this manner, the waste water treatment is accomplished without producing a large quantity of sludge and the consumption of inorganic coagulant and auxiliary chemicals can be greatly reduced, while the concentration of the harmful ion in the treated water becomes sufficiently low.

Abstract: A liquid separator system for separating molten sulfur from liquid redox solution or reslurry water. The system includes a vessel with a top part and a bottom part. The vessel has a larger diameter at the top part than at the bottom part, and the cross section of the vessel downwardly decreases from the top part to the bottom part of the vessel. The system also includes an inlet for introducing a redox solution or reslurry water and molten sulfur, which is denser than redox solution or reslurry water, into the vessel. An outlet near the bottom part of the vessel allows a flow of the molten sulfur from the vessel. An interface control structure senses an interface level between the redox solution or reslurry water and the molten sulfur, and the interface control structure controls the flow of molten sulfur from the outlet.

Abstract: An automatic water drain and priming pump for a fuel system in which a reversible pump is operable in a first direction to pump separated water out of a fuel filter and into a water drain, and further operable in a second (opposite) direction to pump fuel into the fuel filter in order to prime the fuel pump. Operation of the pump in the first direction to drain water from the fuel filter is initiated by water-in-fuel sensors within the fuel filter. Operation of the pump in the second direction to prime the fuel pump is initiated by manual activation of a switch during servicing of the fuel filter.

Abstract: A system for automatically preventing the discharge of spilled oil from electrical distribution substation equipment into streams or ground water. The system utilizes a containment basin, sump, electric operated water drain valve and a thermal dispersion type oil/water interface detector. The oil/water interface probe is placed at a specified height in the sump. It is capable of determining if the probe is in oil, water or air. The interface detector along with other relays will allow water to be draped from the containment basin but prevent oil from being discharged. The system will also initiate an alarm which may locally or remotely warn that a spill has occurred.

Abstract: The invention relates to a distillation method and an apparatus for the concentration and purification of water-containing liquid chemicals. The distillation is performed using constant, predetermined distillation parameters.

Abstract: An aperature is formed in the bottom wall of the launder. A downwardly extending container communicates with the aperture. A weir is positioned immediately downstream of the aperture. The container and weir combine to form a separator. In the launder, free water and solids contaminants settle and form a bottom layer of dirty water. The layer is diverted into the container through the aperture and the weir temporarily retains a small head of it. Temporary retention in the separator therefore generates a vertical fluid column comprising an upper layer of relatively clean froth and a lower layer of dirty water, said layers having an ascertainable interface. The elevation of the interface is monitored and contaminated fluid is withdrawn from the container as underflow at a rate controlled to keep the interface elevation substantially constant. The froth overflowing the weir is reduced in water and solids relative to the original froth issuing from the flotation vessel.

Abstract: The present invention is directed to an improved purging of a liquid drain system for a liquid separator used in a moisture laden process vacuum system wherein the liquid separated from the flow stream by the separator is collected in an accumulator which in turn is periodically pressure purged to quickly remove the liquid contents of the accumulator while such accumulator is out of fluid communication with the liquid separator so that the vacuum process need not be interrupted. A pressure responsive drain valve is connected between the separator and the accumulator. The pressure used to purge the accumulator also activates the normally opened drain valve to inhibit the fluid flow between the separator and the accumulator. A pressure responsive drain is connected to the accumulator and opens in response to the increased pressure used to purge the accumulator and close the normally opened drain valve.

Abstract: The present invention provides a system for the automatic removal of contaminants such as water from the fuel supply of an internal combustion engine of the type including an auxiliary fuel tank. The system is automatically controlled and responsive to sensed contaminant levels in a contaminant removal mechanism and employs an existing fuel transfer pump to direct fuel around the auxiliary fuel tank through the contaminant removal mechanism. The pump additionally operates to provide a continuous supply of fuel to the engine to keep it operating while simultaneously permitting the discharge of contaminants from the contaiminant removal mechanism when a predetermined maximum contaminant level has been reached. This system is especially effective in removing water from the fuel system of a diesel engine powered vehicle such as a tank wherein the engine and auxiliary fuel tank are components of a power pack that is removable from the tank.

Abstract: The invention relates to an arrangement for the automatic removal of water collecting in a fuel filter having a water separator. The evacuation takes place by means of a piston acted upon by a pressure medium, preferably a fuel pressurized by the pressure of the fuel pump, the piston being guided in the container of the fuel filter containing the water. It is particularly advantageous for an already existing drive to be usable for producing the pressure medium and that therefore a simple and inexpensive solution is offered for the removal of the water.

Abstract: For the separation of sulfur from a sulfur/alkaline solution suspension, the suspension is heated to a temperature above the melting temperature of the sulfur and is introduced under pressure into a separating tank 1, containing a separating chamber 8, alkaline solution chamber, and sulfur chamber 12. From the separating tank, settled liquid sulfur is continuously withdrawn, on the one hand, via conduit 16 and alkaline solution is continuously withdrawn, on the other hand, via conduit 9. In order to provide a system having little susceptibility to trouble, the separating chamber and alkaline solution chamber are operated in the flooded mode, thereby avoiding the necessity for a steam blanket therein.

Abstract: Versatile filtering apparatus is provided, particularly for processing liquid or coolant used with metal-working machines. The apparatus is adaptable for processing coolant in a wide variety of coolant systems to meet a variety of requirements of metal-working machines in a plant. The apparatus includes a dirty liquid tank in side-by-side relationship with a clean liquid tank, a coalescing unit, a filtering unit, an automatic supply or fill valve for supplying liquid to the apparatus from the coolant system, and an automatic discharge valve for supplying processed liquid from the apparatus back to the coolant system. The coalescing unit separates free oils from the liquid and the filtering unit separates solid particles from the liquid. The processed liquid is then discharged back to the coolant system along with fresh coolant.

Abstract: An apparatus and method of separating a component from a collected quantity of fluid. The apparatus includes a dual member centrifuge and an associated fluid flow transfer set. The transfer set has a collection container in which a quantity of fluid can be initially accumulated. The collection container is formed as a disk-shaped plastic member with an elongated generally radially extending barrier member formed therein. A component collection container is in fluid flow communication with the disk-shaped container. The method provides for centrifugation of the collection container in the dual member centrifuge thereby separating out the selected fluid component. The component can then be pumped out of the collection container into the component accumulation container. The residual fluid can be sealed in the collection container for later use. The component collection container can be separated and sealed also for later use.

Abstract: Exhaust heat from engines used in oil field operations can be utilized to (1) at least partially separate a water-containing wellstream fluid into a progressively enlarged hydrocarbon phase which floats on the remainder of the wellstream fluid and/or on a water phase and (2) vaporize lighter fractions of the hydrocarbon phase for use as fuels for such engines. The level of the wellstream fluid in the separation vessel and the depth of the hydrocarbon phase which forms a top of the remainder of the wellstream fluid and/or water phase are automatically adjusted so that a heater tube which directs exhaust heat through the separation vessel is predominantely in contact with the hydrocarbon phase. The lighter hydrocarbon vapors thus produced are collected and, preferably, superheated prior to being used as fuels.

Abstract: A centrifugal filter separator system operable to separate from oil under pressure, contaminants and water. The centrifuged water port of the centrifugal filter separator of the system is coupled to a differential pressure responsive, sensor control, which automatically senses the presence of a layer of centrifuged water against the internal surface of the rotating drum of the centrifugal separator. The sensor control is coupled to a flow control circuit which in conjunction with the differential pressure sensor control causes automatic removal of an existing layer of centrifuged water from the rotating drum via the water exit port of the separator. When there is no adequate depth layer of centrifuged water on the inner surface of the rotating drum, the sensor control deactivates the water removal circuit, while the flow control circuit maintains a minimum generally constant flow of liquid from the water port of the separator for priming purposes.

Abstract: A fuel processor device is described which is particularly adapted for replacing existing fuel filters of diesel powered machines and fuel consuming devices. The fuel processor designs described have inlet and outlet passages within their upper surface and include a lower plate assembly which provides a mounting location for various elements such as water sensors, drain valves, temperature sensors and heaters which are provided in accordance with the user's needs. The lower plate assembly may be mounted directly to a housing by a through bolt or matching threads or may be made integral with the fuel processor housing. The fuel processor device may include an integral throwaway filter element or the element may be integrated with the fuel processor housing. Various control means may be employed in connection with the fuel processor disclosed wherein the automatic drain water or other accumulated impurities from the lower portion of the fuel processor housing.

Abstract: An automotive type diesel engine provided with a conventional fuel filter water separator has a solenoid operated drain or dump valve for removing liquid contaminant/water automatically when the contaminant or water reaches a predetermined level actuating a sensor. The removed contaminant or water is then inducted into the engine by means of a venturi/aspirator which in one embodiment has an outlet connected directly to the engine intake manifold to provide the necessary pressure drop or, in another turbocharged diesel engine embodiment, the boost pressure is connected to the inlet of the venturi/aspirator to again induct the liquid contaminant/water into and through the aspirator to be disposed of in the exhaust system of the engine, both embodiments thereby automatically providing for a complete disposal of liquid contaminant/water within the engine and thereby eliminating the need of a periodic draining of the same from the fuel filter by the vehicle operator, for example.

Abstract: A dockside system for the collection and disposal of bilge water, waste oil and the like is described for continuously evacuating waste liquids from waterborne vessels (16, 18) into a shore vacuum tank (24) and for simultaneously and automatically separating oil and water from the waste liquid. A continuous regulated vacuum is applied near the top of the vacuum tank (24) for sucking waste liquid, such as bilge water and oil, through tubes (30, 33, 82) into the tank. The tubes have manually operated on/off valves (34) at outer end portions thereof which are operated at the bilges of the waterborne vessels.

Abstract: A system for separating two immiscible liquids of different specific gravities, such as oil and water. The system includes a gravity separator and oil-contaminated water is continually pumped into the separator tank by a main pump and is impinged against an inclined baffle which directs the water upwardly toward the top of the tank. Larger droplets of oil are collected as a layer in the upper end of the tank, while the effluent is discharged from the lower end of the tank to a coalescer unit, where residual oil is removed from the water. A liquid level sensor is located in the upper end of the separator tank and when the collected layer of oil reaches the level of the sensor, the sensor discontinues operation of the main pump and operates an oil pump to discharge the collected layer of oil from the separator tank to an oil recovery location. The oil collected in the coalescer unit is recirculated and mixed with the oil-contaminated water being introduced into the separator tank.

Abstract: A centrifugal filter separator system operable to separate from oil under pressure solid contaminants, by depositing them on the internal wall of a rotating drum, powered by reaction jet nozzles, while also separating water from oil and extracting it from the rotating drum through a water extraction circuit. A water-oil mixture from the water extraction circuit is passed through a pressurized gravity type separator, from which the separated oil is returned, on a continuous basis, back to the centrifugal filter separator system, while the quantity of the water retained in the gravity type separator is controlled by a water ejecting automatic control, responsive to the position of the water-oil miniscus, or to the position of the layer of water-oil emulsion separating water and oil within the separator.

Abstract: A drain system adapted for use in fuel processing devices, as well as in other fluid equipment applications, includes sensing means for detecting the presence of a predetermined quantity of water or other impurities separated from the fuel, or the presence of other fluids, in an enclosure or container. Drain means are also included for discharging at least a substantial portion of the predetermined quantity in response to said detection of the presence thereof. The drain means is preferably actuated and deactuation by automatic control means in order to maintain said water or other impurities, or said other fluids, at or below the predetermined quantity. The fuel processing device herein further includes means for heating fuel in order to prevent fuel waxing and clouding.

Abstract: A device for separating two liquids one of which is heavier than the other. The device comprises a main chamber (120) in which there is a float (128). The float is such that it sinks in the lighter of the liquids and floats in the heavier. A control chamber (140) having a fixed wall part (142) and a movable wall part (144) is provided. The movable wall part is subjected to the pressure existing in the main chamber which urges the movable wall part in the direction which reduces the volume of the control chamber. A restricted inlet (146) places the control chamber and main chamber in communication. There is an outlet (158) from the control chamber which is normally closed by a valve (168). The valve is opened, mechanically or electrically, when the float rises upon heavier liquid accumulating in the main chamber. A valve seat (160) surrounds an outlet (156) from the main chamber.

Abstract: A fuel-water separator comprises a container having entry and exit ports and a progression of spaces through which the fuel moves. The spaces become progressively smaller and are arranged to direct the fuel through a series of downwardly and upwardly directed paths. The lower density fuel moves upwardly while the higher density water tends to move downwardly to drain through drainage openings provided in the lower portions of the spaces. Valves are provided for closing the drainage openings. The valves include float-valve balls which will release the water but hold the fuel. One of the spaces in the container includes a media having a downwardly directed surface upon which the water coalesces to move downwardly and through which the fuel moves to progress to the next space. Another one of the spaces includes a media providing a surface tension-discriminating surface through which the fuel will move and down which the separated water will move.

Abstract: A drain system adapted for use in fuel processing devices, as well as in other fluid equipment applications, includes sensing means for detecting the presence of predetermined quantities of water or other impurities separated from the fuel, or the presence of other fluids, in an enclosure or container. Drain means are also included for discharging at least a substantial portion of one of said predetermined quantities in response to said detection of the presence thereof. The drain means is preferably actuated and deactuation by automatic control means in order to maintain said water or other impurities, or said other fluids, at or below said predetermined quantity.

Abstract: An improved negative pressure type diesel fuel monitor system that determines a specified level of water trapped in a component of the system and disposed of said water, said water having been separated from the fuel being pumped in the engine fuel line hookup. The system consists of a device to monitor the accumulated water level as it rises in the device, said device also being the facility for separating said water from said fuel and for disposing of said water, said system includes an electrical wiring circuit, connected to the engine run circuit, to operate said device and including a motorized valve to eject collected water therein, a set of logic circuits as part of said electrical wiring circuit, and a combined visual and audio monitor console to record current status of operation of said system.

Abstract: A probe and sump drain assembly (128) includes a fitting (136) secured to the wall of a sump (98) to which a probe housing 146 is threadedly engaged. The fitting is provided with a stepped bore having larger (142) and smaller (140) diameter portions. Seals (154, 156) carried on the housing (146) control fluid communication through passages (160, 162) communicated with the larger portion (142). A ring terminal assembly (170) provides an electrical connection with the fitting (136) and with a transversely projecting portion (166) of the probe (144) regardless of the angular orientation of the portion (166) of the probe (144).

Abstract: This invention provides a drain system for draining, from a settling chamber of a trapping device, foreign liquid which has separated from a supply liquid flowing through the device. The foreign liquid has a specific gravity greater than that of the supply liquid. The drain system includes a float in the lower part of the chamber and having a specific gravity higher than that of the supply liquid and lower than that of the foreign liquid for floating on foreign liquid in the chamber. An indicator is movable with the float, and a sensor mechanically isolated from the indicator is connected to an electrical signal circuit for causing an actuating signal in response to detection by the float of a predetermined quantity of foreign liquid in the settling chamber. A pump is responsive to such an actuating signal for effecting draining of foreign liquids from the chamber.

Abstract: In a fuel-water separator including entry and exit ports for fuel connectable in a fuel line supplying an engine and fuel flow paths between the ports for separating water from the fuel, the improvement comprises first and second passages leading to the exit port and a float valve ball for closing the first passage in response to the accumulation of a predetermined level of separated water. The second passage has a cross-sectional dimension which is substantially smaller than the first so that only restricted operation of the engine is permitted by virtue of a reduced fuel flow rate through the second passage when the first passage is closed.

Abstract: Apparatus for confining a leakage of polychlorinated byphenyl (PCB) from an utdoor electrical substation while permitting rain water to be discharged into the outside environment when no PCB is present. The electrical equipment is disposed on a walled pad having sufficient containment volume to hold the maximum PCB leakage. The outlet from the containment volume is through a water/PCB separator float valve which is disposed vertically in a catch basin. The valve has a tubular body having a flow-through section with apertures which communicate with the catch basin and a converging section of circular cross-section above the flow-through section. A spherical float having a specific gravity between that of water and PCB is confined in the tubular body.

Abstract: Method for making of solid fertilizer by separation of liquid manure into a solid and a liquid phase by means of a separating vessel, wherein the charged liquid manure at first is divided into a solid layer and into a liquid phase and from where the liquid phase is fed into a collector vessel, and whereby the solid phase is separated. The duration time of the liquid manure in its resting stage is delayed until the layer formed by the solid phase is separated on the top of the vessel and then the discharge of the liquid phase is carried out through closeable openings.

Abstract: A fuel filter assembly and cartridge for filtering, coalescing and separating solids, liquids, and gases from a fluid flow including a housing adapted to a removable cartridge. The cartridge is in the form of an annular member having an outer annular filtering section to remove solids an an inner annular coalescing section to cause emulsified liquids to form readily removable droplets in the flow. A separator is situated within the inner periphery of the coalescing section to deflect coalesced liquid for separation while permitting passage of the purified fluid.

Abstract: In an automobile fuel system and particularly for a diesel powered vehicle, it is desirable to provide a water separator to prevent passage of water to the engine and particularly the fuel induction components. It is also desirable to provide ejection means for the separated water which may include a provision to prevent the ejected water from falling to the ground.

Abstract: A time saving combination of a manual pump connected with a storage tank pump and a float controlled drain valve. The connections permit circulation of liquid from the sump to the float valve and back to the storage tank while heavier liquid is allowed to drain from the valve.

Abstract: Apparatus for recovering solvents used for cleaning machine parts and the like from the water used to wash the cleaning solvent from the parts. A fluid-receiving tank has a screen covering the open top of the tank for supporting a part to be cleaned. A splash guard projects above the screen on the back and sides of the tank. A shallow tray is slidably mounted on the tank beneath and closely adjacent to the screen for collecting sludge during a cleaning operation with the water and cleaning solvent overflowing the tray and collecting in the tank below. An inverted U-shaped drain pipe is mounted on the bottom wall of the tank with the inlet of the pipe located closely adjacent to the bottom wall within the tank and the outlet being located externally of the tank beneath the bottom tank wall.

Abstract: An improved process and a system for waste water treatment are disclosed which are particularly suited for use in industrial plants (10) having existing drainage trench networks (108-128) through which normal plant effluents, component leakage and accidental spills ordinarily would be allowed to flow. The trench system is connected to a waste water treatment facility (FIG. 1) designed to remove impurities from the effluents and return acceptably clean water to the plant for reuse or discharge it to the environment. Because some plant effluents, component leaks and unexpected spillages can increase the concentration of impurities in the waste water to levels beyond the design limits of the waste water treatment system, a series of dams (138-144, 150-154, 162-176) are provided at locations throughout the trench network so that effluents having rather high ranges of concentration of impurities are held behind the dams.

Abstract: The present invention relates to a mixer/settler-type apparatus for continuous liquid-liquid extraction. The apparatus is comprised of a separating vessel with an inclined bottom portion and an agitator-provided mixing vessel. The mixing vessel is tightly mounted to the inclined bottom portion of the separating vessel, the latter being formed with an upper outlet and a lower outlet and having a level indicator LI for determining phase boundary surface area installed therein. The lower outlet is passed through the separating vessel near its lowermost level and the upper outlet is passed therethrough near its upper end. The level indicator LI is connected to a regulator giving adjustment instructions to a structural element permitting the phase boundary surface area to be established in the separating vessel, distinctly above the upper end of the mixing vessel.

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 self-emptying clarifying drum has a first paring disk disposed in a first paring chamber for the removal of the clarified liquid and an automatically operating apparatus for sensing the solids level in the separating chamber of the drum. The apparatus includes a plurality of passages formed between the drum cover and a separating plate and which lead from the separating chamber to a second paring chamber provided with a second paring disk for the removal of a small portion of the clarified liquid. The outlet passage of the second paring disk is in communication with the outlet for the clear phase and is connected to a flow measuring apparatus which is coactive with a control apparatus for effecting the discharge of solid matter from the drum.

Abstract: A suspension of sulfur in a scrubbing liquid is preheated with steam to a temperature above the melting point of the sulfur so that the latter spontaneously melts in the suspension which is introduced into a separating chamber in a sealed vessel. The scrubbing liquid is decanted over a weir into a second chamber while the molten sulfur is drawn out at the bottom into a third chamber. The separating chamber is maintained at a pressure and temperature, by a vapor cushion above the liquid, such that evaporation of the incoming liquid does not occur, i.e. the separation pressure is the saturation pressure of the cushion. To prevent vapor condensation on the molten sulfur, the latter is maintained at a temperature higher than that of the liquid in the adjacent separating chamber.

Abstract: A trapping device for trapping foreign liquids having a specific gravity greater than that of a supply liquid comprises a settling chamber defined primarily by a hollow casing, and inlet and outlet chambers in the settling chamber. An inlet and an outlet lead to and from the inlet and outlet chambers, which are separated by an imperforate wall. A heated foraminous wall is arranged so that fluid passing through the chamber from the inlet to the outlet passes through the foraminous wall, which causes separation of the foreign liquid from the supply liquid. The heating of the foraminous wall may be controllable to enable it to be heated sufficiently to clean the foraminous wall. An educer-operated drain is provided for draining settled foreign liquids from the chamber.

Abstract: Waste water, in the form of an oil-water mixture, is passed through a series of successive processing stages for effectively separating the water from the oil and directing the same into respective storage compartments. The separated water is conditioned in its storage compartment for reuse by providing a circulating pump therein for circulating and agitating the separated water and thereby aerating the same to prevent stagnation and freezing of the stored separated water. Further, an additional pump is provided in the water storage compartment for directing the separated water from the storage compartment to a desired location for reuse. The separated water may be heated selectively as it is directed away from the water storage compartment, and fresh water also may be introduced into the water storage compartment if the separated water therein drops to a predetermined lower level.

Abstract: Activated sludge waste water treatment systems utilizing influent and/or sludge return flow as pressurized gas-liquid contactor motive stream source and having improved energy efficiency. Staged flow control systems are also disclosed.

Abstract: An adjustable universal float for use with a liquid or fluid where a liquid is placed within the float as ballast so that the float can be adjusted to a particular specific gravity of the liquid, said float carrying a valve assembly for controlling the discharge of one or more liquids as desired from a filter housing. A deflector plate is positioned near the inlet chamber of the filter housing to direct the incoming liquid toward the inside wall of the filter housing and away from the filter element.

Abstract: A device for separating a first liquid from a second liquid contaminated by the first liquid comprises a casing having an inlet and an outlet in the upper region of the casing, the separated first liquid collecting in the lower portion of the casing, a float which is arranged to float on the separated first liquid, the vanes for guiding the movement of the float and a seating in the upper part of the casing which forms a valve with the float, to prevent flow of liquid to the casing when the level of the first liquid rises above a predetermined level.

Abstract: An automatic liquid level control system for separation tanks which are used to clean waste water. The automatic level control system includes an external stilling well mounted on the side of the separation tank and having a liquid level sensing means which produces a pneumatic signal related to the liquid level. A pneumatic operator receives the pneumatic signal and maintains the proper position of the weir gate in the weir or outfall box of the separation tank, so that the amount of effluent water flowing from the tank is appropriately regulated to maintain the desired liquid level in the tank.

Abstract: In turbine engine systems liquid diesel fuel (more viscous than gasoline) s heretofore been purged of water impurity and solid impurity by a two stage system comprised of a disposable cartridge type depth filter and a water coalescer. The present invention modifies the conventional system by replacing the disposable cartridge type depth filter with an extended life cyclone; concentrated impurities are vented from the cyclone and coalescer to an additional separator mechanism. This additional separator mechanism returns purified fuel to the fuel tank; separated impurity is exhausted out of the system.