Abstract: A waste treatment apparatus (10) including one or more vertically oriented curtains (11) each formed of mesh material having a minimal aperture size of 0.001 mm, means for applying liquid waste to said curtain(s) located above said curtain (17, 15) and collection means (20A) for collection of treated waste after passage through said one or more curtains (12). There is also provided a method of treatment of waste using the waste treatment apparatus.

Abstract: An apparatus and method for extraction of chemicals from an aquifer remediation aqueous effluent are provided. The extraction method utilizes a critical fluid for separation and recovery of chemicals employed in remediating aquifers contaminated with hazardous organic substances, and is particularly suited for separation and recovery of organic contaminants and process chemicals used in surfactant-based remediation technologies. The extraction method separates and recovers high-value chemicals from the remediation effluent and minimizes the volume of generated hazardous waste. The recovered chemicals can be recycled to the remediation process or stored for later use.

Abstract: A method and apparatus for separating water from oil includes creating a vacuum in a container so that oil which contains water and gas bubbles is drawn upward through a first section of the container. At the top of the first section, the oil impacts a baffle plate, thereby releasing water vapor. The oil then flows downward through an obstruction component in a second section of the container, thereby releasing additional water vapor.

Abstract: The present invention relates to a method and an apparatus for fermentation of cattle dung or like organic waste material containing high percentage of water. In a method of accommodating a treating object material consisting of an organic waste material containing a predetermined quantity of water in a fermentor for fermentation, a method of the present invention comprises the step of granulating the treating object material in a nodular-shape before being accommodated in the fermentor for fermentation with the supply of warm air in starting of fermentation through manually communicating ventilation spaces formed between the surfaces of the adjacent granules of the treating object material. The percentage of water content in the treating object material before being granulated is controlled until a percentage of water content enough to permit granulation and aerobic fermentation is reached.

Abstract: A wastewater aerating system that conditions air inlet to a blower of the system to adjust the condition of air discharged into the wastewater so as to increase the flocculation rate of suspended solids from the wastewater. The wastewater aeration system includes a conduit having an outlet submerged within a bath of wastewater to be treated, an air duct inlet in flow communication with a source of ambient air, a blower operable to cause air to pass through the air duct and through the conduit to be output through the conduit outlet into the bath of wastewater, and at least one heat exchanger installed in the air duct and adapted to condition, such as condense its vapor and sensibly cool, the air passing through the air duct. A method of treating a bath of wastewater is also disclosed.

Abstract: A method of converting a plastic waste into oil by decomposing the plastic waste by a reaction using water in a supercritical or near supercritical region as a reaction medium. In this method, the reaction is conducted by using a tubular continuous reactor. The present invention further provides an apparatus therefor. Moreover, the present invention provides a method of converting a plastic waste into oil by conducting the reaction after hydrogen chloride is removed by performing the pyrolysis of the plastic waste in the case that the plastic waste contain chlorine. The present invention further provides an apparatus for performing this method.

Abstract: A method of converting a plastic waste into oil by decomposing the plastic waste by a reaction using water in a supercritical or near supercritical region as a reaction medium. In this method, the reaction is conducted by using a tubular continuous reactor. The present invention further provides an apparatus therefor. Moreover, the present invention provides a method of converting a plastic waste into oil by conducting the reaction after hydrogen chloride is removed by performing the pyrolysis of the plastic waste in the case that the plastic waste contain chlorine. The present invention further provides an apparatus for performing this method.

Abstract: Steaming filter aid cakes in-place in a pressure leaf filter is a simple, inexpensive, and reliable technique for insuring that all collected pathogens are destroyed and never released back into the environment. Filter aids including diatomaceous earth reduce giardia and cryptosporidium by at least 6 logs. D.E. filtration allows the flexibility to adjust the dosage for bodyfeed and the grade to suit changing water conditions, and the process of bodyfeeding filter aids is the only technology that seals its own leaks. After sterilization, the filter aids can be recycled. With hydrocyclones the contaminants can be separated from the filter aids and up to 90% of the filter aid can be recovered. This makes filter aid treatment a very cost effective treatment for large plants as well as the smaller plants where this technology has been used in the past.

Abstract: Ozone is generated and combined with water. The combined water and ozone are then mixed to provide a substantially homogeneous mixture which subsequently is transported along a confined flow path having a length sufficient to provide substantially complete decomposition of the ozone.

Abstract: The present invention provides for an apparatus and method for collecting and recycling a petroleum by-product such as hydrocarbon residue from crude oil. The apparatus comprises a container having a top, bottom, and sides, an internal heating element, an inlet element, an outlet element, a pump connector, and optionally a plug element for an auxiliary connector. The present invention further provides a method for recycling waxy hydrocarbon residue from crude oil. The method comprises providing the container of the present invention; filling the container with a sufficient amount of the waxy hydrocarbon residue; heating the waxy hydrocarbon residue in the container in order to produce a liquefied hydrocarbon residue; pumping the liquefied hydrocarbon residue out of the container through the pump connector and into a separate storage vessel; and, recycling the liquefied hydrocarbon residue into a usable oil refinery product.

Abstract: An etching device for preparing flexible blocks which can be used for printing in flexography, typography or dry offset generally includes an etching tank containing a bath (22) and brushes (3), a stirring and heating device, and an overfill system (20) for discharging the solution from the etching tank through an outlet duct (21) to a separation device. The separation device includes a reception vat (14) having an upper part which is equipped with a device (10) for separating the water and the polymer, and at least one filtering membrane (7).

Abstract: Described are preferred processes and apparatuses for thermally desorbing desired chemical products from resins to which they are adsorbed. The processes and apparatuses provide highly efficient use of applied heat throughout resin preheat, desorption and cooling phases.

Abstract: The invention provides a system 10 for treatment and purification of domestic household effluent, and for the elimination within said system of organic solid wastes, comprising elements 12 and 14 for separately collecting first and second constituents of the sewage of a domestic residential unit, lavatory sewage comprising said first sewage constituent, and bath, shower, wash basin, laundry, kitchen sink sewage and the like comprising said second sewage constituent, a first and a second dual-purpose vessel 22 and 24, each vessel having at least one inlet port 18 and 20 and at least one outlet port 26, 28, 30, 32 and being arranged so that during the time period that one of said vessels 22 receives said first sewage constituent and acts as a collector and settling tank, the remaining vessel 24 operates as an anaerobic reaction vessel, the vessel operating as an anaerobic reaction vessel carrying out a decomposition process during which the volume of sludge 34 contained therein is greatly reduced by conversion

Abstract: Ferrofluid coated particles resulting from a ferrofluid materials separation process are washed with a solvent which is the same material as the liquid carrier employed in the ferrofluid. The result is a "dirty" solvent which is a very weak ferrofluid. The dirty solvent is then filtered or centrifuged to remove dust particles and other impurities and then the solvent is recovered by distillation in a distillation unit. The solvent can then be reused in the materials reclamation process. The residue in the distillation unit is surfactant-coated particles of ferrofluid. This residue is mixed with either clean or unprocessed solvent in the right proportion and the slurry is passed through an attritor to convert it to a high grade ferrofluid. The ferrofluid can also be reused in the materials separation process.

Abstract: A wastewater treatment system which comprises a tank having defined therein an aerobic treatment zone and a suspended micromedia zone. One embodiment further includes an anaerobic treatment zone. The suspended micromedia zone includes a separating media. Substantially continuous aeration is provided to energize the separating media and cause it to be stirred up into a water column within the tank. The air flow provides partial suspension of the separating media and imparts continual upward motion to the wastewater in such zone. A chimney is provided above a portion of the suspended micromedia zone and extends above the aerobic treatment zone. The mixed liquid and air rising due to the aerator air flow travels within the chimney into the aerobic treatment zone. Some separating media also travels within the chimney into the aerobic treatment zone. Aerobic bacteria is provided in the aerobic treatment zone external of the chimney.

Abstract: A method for preventing biofouling in a cooling water system wherein ozone of high density is intermittently injected into a circulating line of a cooling water system in which cooling water is made to circulate in a closed system which includes a cooling tower and a heat exchanger. There is further disclosed an apparatus for preventing biofouling in a cooling water system, comprising an ozone generator for producing ozone, an ozone reservoir for temporarily storing the produced ozone, and an ozone injector for injecting the stored ozone into a circulating line of a cooling water system. Biofouling can be economically and reliably prevented.

Abstract: The method of separating impurities from an aqueous solution by means of rotating the aqueous solution at high speeds until a high pressure and a high temperature is reached. At that time the impurities are separated from the solution. The aqueous solution is kept at high temperatures and pressures until the impurities are separated from the liquid. Preferably, a device providing a centrifugal force, such as a centrifuge, is used to achieve the high temperatures and pressures which should preferably be no lower than 705.4.degree. F. and 3,208 psi, respectively.

Abstract: A device for producing fibrinogen includes a platen having a surface configured for heat exchange with a container, which is adhered to the platen by device of a vacuum and heat exchange allowing both cooling and heating to occur along the boundary between the container and the platen. The platen is operatively coupled to a device of rocking the platen about a horizontal axis and the container allows scavenging of a cryoprecipitate fibrinogen from the blood product for subsequent utilization.

Abstract: A single-cell wastewater treatment and reuse system designed for wastewater flows of less than 1,500 gpd includes a wastewater treatment cell having a volume in the range of about 14 to about 42 times average daily discharge from a wastewater source, such as a residence, and an overlying reclaimed water storage volume which, for one temperate location, is sized to store about 120 days of reclaimed water. An end of an air conduit disposed in the treatment cell at an elevation higher than the cell bottom but substantially lower than a top margin of the treatment cell provides 2,500 cubic feet per pound of introduced biomass. A pump is operated to selectively withdraw reclaimed water for a beneficial use such as plant irrigation.

Abstract: A safe and efficient hydrothermal reaction apparatus for converting waste plastic into oil is described herein. The apparatus comprises a receiver tank for containing therein a mixture of plastic and water; a high-pressure injection pump in communication with the receiver tank through a flow passage change-over valve, the flow passage change-over valve being in communication with a water injection passage; a reactor device including a curved piping in communication with the injection pump, the curved piping being provided with a heating means; and an effluent tank in communication with the reactor device through a pressure reducing valve. The flow rate of the mixture injected into the reaction device may be controlled by regulating the pressure reducing valve.

Abstract: An activated carbon filter is regenerated while it remains positioned in a filter vessel by first draining both unfiltered and filtered water out of the vessel and then applying an electric current through the activated carbon body of the filter to drive off contaminants. An inert gas is directed through the filter in a direction opposite to that of the liquid flow and then contaminants are moved from the filter vessel to a multi-stage catalytic converter where they are completely oxidized.

Abstract: A multi-chambered portable waste water treatment plant for a mobile home which is installed on or above ground level and can be easily moved from one location to another. The portable waste water treatment plant of the invention is insulated and is internally heated to prevent freezing of the liquids in the plant and promote decomposition of the waste in the plant when ambient temperatures are below freezing.

Abstract: A process and system for waste water treatment including a concentration means positioned at the front of the treatment system in order to concentrate the starches and sugars contained in a waste stream. In a mixing vessel, the concentrate stream is treated with a variety of additives in order to increase consumption of the biological components and to produce a stream having a predictable and predetermined level of soluble starches. The waste stream is solubilized by subjecting the stream to heat and enzyme treatment such that the starches and complex sugars are converted to simple sugars. In a fermentation vessel, a carefully selected yeast strain is introduced into the waste stream and permitted to feed on the sugars. The operating conditions in the vessel (e.g. pH, temperature, oxygen supply, and mineral supply) are carefully controlled to enhance consumption of the biological components in the waste stream.

Abstract: An integrated method for purifying industrial and/or urban effluents containing a large amount of organic material in solution and/or suspension, wherein said effluents are treated in a wet oxidation reactor. The effluents are oxidized in the presence of at least one oxidizing gas to mineralize a large part of the organic material therein by producing a gas phase and an essentially liquid phase mainly containing soluble residual organic material, as well as an essentially inorganic solid phase in suspension. The essentially liquid phase from the reactor is subjected to liquid/solid separation to separate the solid phase, and at least a fraction of the separated solid phase is recycled in the wet oxidation reactor. Various alternative embodiments of the method include adding a catalyst and/or an agent for acidifying the recycled solid phase fraction. The facility may operate continuously or semi-continuously between interruptions.

Abstract: A method and an apparatus for cleaning filters contaminated by hot-melting resins and polymers in situ, without removing the filtering elements. The method comprises a preliminary step, during which the circulation of the product to be filtered through the filter to be cleaned is interrupted, and a draining step, during which a pressurized draining fluid is passed through the filter in order to empty the filter of the residual product. A filter cleaning step is then performed during which a cleaning fluid, constituted at least partially by superheated steam, is passed through the filter. The fluids used to clean the filter are then subjected to treatments to eliminate pollutants.

Abstract: The present invention provides treatment of domestic sewage containing oil. The resulting products will be purified water, dry fertilizer, and fuel (gas and liquid) containing no contaminants that could pollute the environment. After the initial settling process, two parallel flows are created: one containing liquid plus crude sediment (0.2 mm and greater) and the other containing liquid and fine particles (less than 0.2 mm), the latter termed "settled domestic sewage". The two flows are treated separately. The settled domestic sewage after treatment in a low-pressure separator that will separate out liquid fuel, followed by aeration, ultrafiltration, and finally sterilization by ozone or chlorine, results in pure water. The biochemical treatment of the sediments results in the production of gas fuel containing mainly methane gas and solid product that after drying and disinfecting is converted into fertilizer.

Abstract: The patent claims concern a method for a more efficient "wet ?combustion! oxidation" of COD-containing effluents from industrial processes and municipal plants and for a more efficient COD-reduction by enzymes in aerobic and anaerobic biological cleaning processes and for same sorts of effluents. The method implies a strong increase of the reaction speed between added oxygen and the elements in the liquid to be oxidized through so-called "Turbo Oxidation", which implies that the liquid is submitted to strong movements nd turbulence during several circulations within one or more liquid circuits during continuous addition of oxygen. By the same method, COD reduction by enzymes can also be made more effective. The single circuit is placed in connection to and communicates liquid-wise with a pressurized reaction tank, from where the developed reaction gases are continuously let out.

Abstract: A method for improving priming of an integrated oxygenator and heat exchanger which includes pretreating the integrated hollow fiber oxygenator and heat exchanger device with a surfactant. Pretreating the device coats the interior surfaces of the integrated hollow fiber oxygenator and heat exchanger with the surfactant, which facilitates the removal of entrapped air. An integrated hollow fiber oxygenator and heat exchanger having a surfactant coating on the interior surfaces is provided which subsequently allows for more efficient priming with an aqueous priming media.

Abstract: An apparatus for aerobic biological treatment of aqueous organic wastes, which enables the achievement of a reduction of the amount of excess sludge, a stable quality of the treated water and an improved sedimentation performance of the biosludge while reducing the area of installation site and construction investment using a smaller apparatus; which apparatus comprisesa first aeration tank for mixing the aqueous organic waste with an activated sludge and aerating the resulting mixture; a solid/liquid separation unit; a modification unit for modifying a part of the separated sludge so as to render it easily biodegradable; and a second aeration tank for aerating the modified sludge and a return sludge and means for returning the sludge to said first aeration tank.

Abstract: A safe and efficient hydrothermal reaction apparatus is described herein. Decomposition or synthesis of object material is performed by the continuous passing of the material through a flow passage of multi-staged reactor units under turbulent flow conditions. The flow passage is formed by a curved or spiral piping. In each reactor unit, a hot plate block is included as a heating unit. The hot plate block and the curved piping are placed in an appropriate thermal contact relationship. A portion of the curved piping is freely supported, so as to accommodate stress caused in the piping under high-temperature/high-pressure conditions. A tank is provided for regulating or controlling the pressure fluctuation within the flow passage which may be caused by solids or powder present or occurring in the flow passage during high-pressure treatment.

Abstract: Fuel, oxidant and reactant for a supercritical water oxidation reactor are fed through an injector in which the flow are arranged such that the oxidant feed surrounds the fuel feed and the shields the fuel feed from the reactant feed. Excessive reactant temperature is thus avoided, and the reaction can proceed in a highly efficient manner.

Abstract: The invention relates to a tube bank heat exchanger for use in reducing the temperature of air delivered under pressure to an air diffuser system within a wastewater treatment facility. The tube bank heat exchanger, submerged within the wastewater, is of a configuration which extends the air flow path from the air source to the diffuser system. By such configuration the temperature of the air delivered to the diffuser system is reduced to a temperature of no more than about 140 degrees F.

Abstract: The present invention provides a process and apparatus for cleaning and reclamation of an industrial waste containing oily metallic solids by magnetically concentrating the oily magnetic solids, mixing the concentrated solids with a chemical release agent, applying microwave radiation to the mixture, and separately collecting the clean metallic solids and recovered oil components.

Abstract: The invention relates to a reactor for UV radiation for the disinfection of liquids comprising at least one high or medium pressure UV emitter (1) arranged coaxially inside a protective sheath (2) transparent to UV, the assembly formed by the emitter and the sheath being located coaxially inside a tubular shell (3) whose internal face reflects at least 30% of the incident UV at 250 to 260 nm coming from the emitter (1), the liquid to be treated transiting according to a flow pipe in an active chamber (4) defined by the internal face of the shell (3) and the external face of the sheath (2), the reactor being characterized in that it is connected to washing means (30) of the active chamber (4) including means making it possible to make a cleaning liquid circulate in the active chamber (4) and air injection means (8) provided upstream from the active chamber (5) making it possible to improve the turbulence of the cleaning liquid during washing.

Abstract: The invention relates to a process for the separation, in particular filtration of liquids and solids from solid-liquid mixtures, such as from a mineral, ore, coal or sludge suspensions of contaminated earth. The processing space of the filtration apparatus is submitted to overpressure and includes a collector container for solid-liquid mixture, a pressure filter, a discharge system and container for condensate and solid matter. The separation or filtration takes place at an overpressure and at an elevated temperature, preferably 40.degree. C. to 300.degree. C., conveniently 60.degree. C. to 200.degree. C., preferably about 150.degree. C. The pressure filter device communicates with a source for a heated medium.

Abstract: A wet oxidation apparatus includes a device for raising the pressure of liquid oxygen; an evaporator for evaporating the liquid oxygen; a device for supplying nitrogen including a compressor for compressing atmospheric air and for supplying the compressed air to a first mixer, a storage container for storing liquid nitrogen; a device for raising the pressure of liquid nitrogen; a second evaporator for evaporating the liquid nitrogen; the first mixer located for mixing the evaporated oxygen and nitrogen; a second mixer for mixing the resultant gas with waste water to be treated, and a reactor for receiving the mix of gas and water.

Abstract: In apparatus for separating the components of a mixture, the mixture is admitted to a first inlet which communicates with a working region which may be defined by a cylindrical tube. A fluid under pressure is admitted to a chamber through a second inlet. The chamber also communicates with the working region. The fluid forms a spiralling flow which draws the mixture into the working region in the form of a vortex. In the apparatus, the chamber communicates with the working region by way of a throat, and the mixture is conveyed from the working region along an outlet.

Abstract: An apparatus for treating waste water streams is constructed by introducing a mixture of pre-heated waste water and an amount of a oxidant lower than that required to oxidize all the organic matter in the waste stream into the front port of an elongate tubular reaction chamber maintained at supercritical temperatures and pressures. The amount of oxidant is high enough, it initially raise the temperature of the stream in the reaction chamber to 750-1,200.degree. F. A first injection side port is located downstream from the front port of the reaction chamber at a distance at which the temperature has reached a maximum value, and 90-100% of the available oxidant has been consumed. Oxidant and water are simultaneously injected through the first port, in a manner that the amount of oxidant is adequate to oxidize to oxidize a specified amount of organic matter, and the amount of water is effective to counterbalance the heat produced by the ration of the co-injected oxidant with the respective organic matter.

Abstract: Disclosed is a novel continuous ion exchange apparatus capable of performing both ion exchange treatment and regeneration treatment within a single column by the use of ion exchange resin(s) whose ion exchange abilities can be regenerated by acid or alkali.

Abstract: A high pressure and high temperature reactor, especially operating under supercritical water conditions combined with corrosive atmosphere. The reactor comprises a reaction chamber and a pressure vessel, which surrounds the reaction chamber. It has high integrity since it has only one penetration in the pressure vessel, and its size is minimized due to induced turbulent flow of the ignited reaction mixture.

Abstract: The device for continuous filtration and drying of a solid suspension comprises a belt filter (1) and downstream a belt drier (2). By use of a porous conveyor belt (3) the filter cake generated in the belt filter (1) is conveyed further into the belt drier (2) in which there are provided heating devices for heating and drying the filter cake (7) which is on the conveyor belt (3). After leaving the belt filter (1), the filter cake (7) is present on the conveyor belt (3) in the form of a gas-permeable bed of solids in layer form having a maximum layer thickness of 50 mm, preferably a maximum of 20 mm. The heating devices in the belt drier (2) comprise, on the one hand, a hot gas chamber (8) disposed above the conveyor belt (3) to generate a hot gas which flows through the bed of solids downwardly from above and, on the other hand, one or more contact heating elements (10, 15, 18, 19, 20, 22) disposed above and/or below the conveyor belt (3).

Abstract: A process for the anaerobic digestion of organic carbonaceous material is disclosed. The process includes the steps of (a) hydrolyzing organic carbonaceous material to produce a digester stream including hydrolysis products; (b) subjecting the digester stream to a first methanation phase operating at thermophilic conditions to produce a gaseous product including methane; and (c) subjecting the digester stream to a second methanation phase operating at mesophilic conditions to produce further gaseous product including methane, and to recover heat. An apparatus for the anaerobic digestion of organic carbonaceous material is also disclosed.

Abstract: A system for the reduction and separation of highly emulsified and/or immiscible components mixed in a fluid, particularly useful for treating waste water contaminated with oils and oily emulsions, as from depleted oil wells, vehicle washing stations, and meat rendering plants. The system is operative for reducing the amount of organic and inorganic contaminants, and is particularly suitable for reducing the amount of oil, with oil-consuming microorganisms, and separating oil that is not consumed within the system from the water so that the oil may be recycled and the water discharged into wetlands or sanitary sewers without further treatment. The system comprises a multi-stage, recirculating series of treatment tanks. In a first stage, the fluid is recirculated through a treatment loop where the fluid is aerated and then passed through a coalescer.

Abstract: An arrangement for reducing the moisture content of sludge includes a spray dryer to which the sludge, a dispersion medium in the form of gas or vapor as well as hot gas can be supplied. The arrangement further includes a separating unit with solids discharge arranged following the spray dryer via a transfer line and a heater for raising the temperature level of the gas entering the separating unit, wherein the heater is arranged in a connecting line between the separating unit and the spray dryer.

Abstract: A fuel treatment apparatus and process is provided utilizing a blending head thereon defining a plurality of passages therein including a first passage and a second passage connected by a blending passage which includes a thermostat for blocking off the blending passage. The blending head functions to direct fuel into a fuel treatment apparatus having a settling chamber with a fuel introducing conduit passing through the top of the chamber and extending to a lower portion of the chamber to define a fuel inlet in the lower portion of the chamber. A buoyant valve is located within the conduit to permit fuel introduction during normal operation but to close off the conduit during periods of non-operation thus closing off fluid communication between the fuel treatment apparatus and the fuel tank. A fuel outlet is provided to remove the fuel after the treatment. A recess in the bottom of the chamber has a drain in the bottom thereof for the removal of moisture from the bottom of the chamber.

Abstract: The invention relates to an apparatus for the purification of a liquid effluent containing pollutants, particularly metals and/or radionuclides, as well as to a process for purifying the effluent.An object of the invention is to provide a continuously functioning purifying apparatus.This object is achieved with the aid of an apparatus incorporating a confinement enclosure containing a support in which are immobilized living cells of photosynthetic microorganisms. The support is made from a material transparent to light rays. The apparatus also incorporates a mechanism for introducing and circulating the effluent to be treated and a culture medium within the enclosure.

Abstract: A process for the recycling of used and contaminated water-based metalworking fluids comprising separation of solid contaminants by settling and filtration, and separation of unemulsifiable tramp oil, reduction in total dissolved solids, removal of destructive bacteria and fungi, and removal of odors and toxic gases by the injection of steam, said process not requiring the use of a centrifuge.

Abstract: In a multi-pass system for purifying oil or other liquids, an improved apparatus and method for mixing air with the contaminated liquid for separation after a phase change from liquid to gas. The contaminated liquid is drawn from a reservoir by a pump, filtered, and heated, and atmospheric air is induced into the contaminated liquid downstream of the heater by an eductor, which promotes the phase change from liquid to vapor. The liquid/contaminant mix, which now includes entrained air, is passed immediately through a second eductor, the compressibility of the air in tile mix, followed by expansion of the compressed air as the mix exits the second eductor, causing intimate contact of air and contaminant, thereby promoting the stripping of the contaminant from tile liquid. The air/liquid/contaminant mix is then routed to a level controlled separation tank, water vapor, contaminants, and condensate being released from tile tank ill the space above the pooled liquid.

Abstract: In a multi-pass system for purifying oil or other liquids, an improved apparatus and method for mixing air with the contaminated liquid for separation after a phase change from liquid to gas. The contaminated liquid is drawn from a reservoir by a pump, filtered, and heated, and atmospheric air is induced into the contaminated liquid downstream of the heater by an eductor, which promotes the phase change from liquid to vapor. The liquid/contaminant mix, which now includes entrained air, is passed immediately through a second eductor, the compressibility of the air in the mix, followed by expansion of the compressed air as the mix exits the second eductor, causing intimate contact of air and contaminant, thereby promoting the stripping of the contaminant from the liquid. The air/liquid/contaminant mix is then routed to a level controlled separation tank, water vapor, contaminants, and condensate being released from the tank in the space above the pooled liquid.

Abstract: An apparatus for mixing pressurized air with pressurized waste liquor at the inlet of a wet oxidation system heat exchanger device is disclosed. The apparatus is a T-shaped piping member with an inline first inlet and outlet and a second inlet oriented at about a right angle to said inline first inlet. The outlet is connected to an inlet tube of a tube and shell heat exchanger. A conduit supplies a pressurized waste liquor stream to the piping member through the second inlet. An oxygen-containing gas supply conduit, with circumferential sealing means, extends from exterior the T-shaped member, through the first inlet and terminates at a point beyond the intersection of the first and second inlets. The circumferential sealing means seals to the first inlet. The liquor entering the T-shaped member is heated to a selected elevated temperature prior to contacting a pressurized oxygen-containing gas supplied from the gas supply conduit.