Abstract: A system and method to join distributed energy resources (DER) to achieve common objectives is provided. The present technology organizes and/or aggregates DERs by routing a (DER) program request for resources to DER contributors capable of responding to and performing the request using a routing system. The system accesses a plurality of DER profiles, each profile associated with a DER contributor capable of contributing a resource to the request, and calculates an initial value for each DER profile based on request attributes and scoring metrics associated with the profile. The system then calculates a fitness metric for each DER profile based on the initial value using a neural network having weights based on the plurality of performance indicators and selects the DER profile and contributors to whom to route the request.

Abstract: The present invention relates to a micro-bubble pump apparatus for a water treatment, and the micro-bubble pump apparatus for a water treatment comprises: a motor for generating rotatory power; and a micro-bubble pump connected to the motor and for mixing a feed liquid which flows into one side thereof and a feed gas which is injected into the other side thereof.

Abstract: A system and method to join distributed energy resources (DER) to achieve common objectives is provided. The present technology organizes and/or aggregates DERs by routing a (DER) program request for resources to DER contributors capable of responding to and performing the request using a routing system. The system accesses a plurality of DER profiles, each profile associated with a DER contributor capable of contributing a resource to the request, and calculates an initial value for each DER profile based on request attributes and scoring metrics associated with the profile. The system then calculates a fitness metric for each DER profile based on the initial value using a neural network having weights based on the plurality of performance indicators and selects the DER profile and contributors to whom to route the request.

Abstract: The present invention relates to a filtering assembly (1) for filtering at least one fluid circulating in particular in an engine or a hydraulic device, comprising: a filter body (2), which comprises a vessel (3) and a head (4), the vessel (3) and the head (4) being provided to engage with one another in order to close the filter body (2), in particular by screwing; a tube (15), in particular a central tube, which is inside the filter body (2) and extends along a longitudinal axis (X); a removable filtration cartridge (16,) which is accommodated in the filter body (2) and includes an upper end plate (20), a lower end plate (21) and a filtration medium (22) which extends between the upper (20) and lower (21) end plates, the filtering medium (22) having a tubular opening (17) for surrounding the tube (15), characterized in that the upper end plate (20) comprises first reversible rigid-connection means (25) and in that the vessel (3) comprises second reversible rigid-connection means (26) which are complementary

Abstract: An oil recovery process which utilizes chemical precipitation and complexation reactions to remove dissolved organics and silica from waste water streams. The process produces brine suitable for deep well injection and solids suitable for Class II landfill. The treatment process can be used in combination with a concentrator and in addition to producing brine suitable for deep well injection and solids suitable for Class II landfill, the concentrator also produces a clean water stream for reuse. By including a crystallizer for the brine processing the system has zero liquid discharge.

Abstract: A gravitational settling tank including a pressure vessel which precipitates solid content contained in slurry in which coal and solvent are blended, and separates the solid-content concentrated liquid from the supernatant liquid, and a supply pipe which supplies the pressure vessel with the slurry. A main body part and a nozzle part which is connected on the downstream side of the main body part and extends horizontally are provided in the supply pipe. A plurality of holes are provided in the nozzle part. By virtue of this, agitation of the solid-content concentrated liquid which has settled in the bottom is inhibited.

Abstract: A device for mixing and aerating a body of water, the device includes a microbial fuel cell comprising an anode and a cathode; an electricity management subsystem electrically connecting the anode and the cathode; and a mixing subsystem electrically connected to the electricity management subsystem. The device can be used to mix or aerate a body of water containing organic material while simultaneously reducing the requirements for aeration. The body of water may provide organic material to the microbial fuel cell to produce electricity to power the mixing subsystem.

Abstract: A method and apparatus for the treatment of water and, more particularly, to the mineralization of water in order to improve pH, hardness, turbidity, and/or alkalinity is described. More particularly, a system is provided for the treatment of water that needs additional hardness, alkalinity, and/or pH adjustment while also meeting turbidity requirements. The use of sodium hydroxide and other methods for avoiding turbidity problems can be eliminated and/or minimized.

Abstract: The present invention relates to a method for purification of produced water and to a system for carrying out the inventive method. Further, the invention relates to a purified produced water product obtainable according to the invention. A unique sequence of unit operations including the addition of dissolved calcium hydroxide and the subsequent precipitation thereof enable a particularly efficient removal of contaminating substances from produced water from the petrochemical industry.

Abstract: A field water purification system is described. The field water purification system includes a container and a filter coupled to an outlet port of the container. The container includes a first layer and a second layer of polymeric material. A first edge of the first layer is bonded to a first edge of the second layer. A second edge of the first layer is bonded to a second edge of the second layer. A first end of the first layer is bonded to a first end of the second layer. The outlet port is disposed in the first layer at a first distance from the first end. A flat water filter is also described. A method for treating water is also described.

Abstract: The wastewater treatment system includes a hollow, elongate, horizontally disposed, cylindrical body made from plastic is adapted for water storage and treatment. The cylindrical body includes reinforcement ribs formed by a helically wound steel band embedded in the plastic and extending between opposite open ends of the elongate cylindrical body. A voltage source selectively energizes the steel band. A pair of bulkhead members respectively extends across and covers opposite ends of the cylindrical body. A fluid-tight wall is mounted in the cylindrical body, the first bulkhead member, the fluid-tight wall and the cylindrical body forming a fluid-tight tank defining a liquid storage chamber. The second bulkhead member and the fluid-tight wall define a dry liquid treatment equipment chamber. An inlet pipe extends into the tank for admitting the pretreatment liquid into the tank. An outlet pipe extends from the tank and discharges the treated liquid from the tank.

Abstract: A wastewater treatment system is provided having a reactor, first and second bio media and an aeration system. The first bio medium is located proximate an inlet end of the reactor and extends vertically between a top water level and the reactor's floor. The second bio medium is located proximate an outlet end of the reactor and extends vertically between a bottom water level and the reactor's floor. The media are adapted for retaining solids within the reactor as clarified water is withdrawn after treatment. The first bio media is further adapted to act as a baffle thereby causing wastewater to flow generally uniformly into a primary reactor zone. The aeration system includes a plurality of diffusers, some of which may be located adjacent or underneath the bio media and are adapted for promoting the shaking the bio media when activated in order dislodge excessive biomass therefrom.

Abstract: There is disclosed a device for purifying oily wastewater, including a vertical tank of an atmospheric pressure, inside which a central coagulation reaction tube, a reverse cone-shaped cyclone flocculation stage, a suspended sludge filtering zone and a purified water commutation stage of inclined plates are included from bottom to top sequentially, oily wastewater is sequentially subjected to a coagulation reaction, suspended sludge filtering and a purified water commutation process and then discharged, a sludge collecting groove collects and guides the suspended sludge to a sludge concentrating zone for further sedimentation and concentration processes and then discharges it to external to the tank, in this way, the purification reaction, flocculation and fine filtration of wastewater and the sludge concentration process are integrated within the same wastewater purifying device. Thus, the device is equivalent to the existing wastewater pretreatment system plus a fine filtration system.

Abstract: In a feed dilution system and method for a thickener or settling tank, a feed pipe nozzle has a variable orifice configured to provide an infeed slurry flow stream of substantially constant velocity. The feed pipe orifice is disposed in a mixing conduit proximate an upstream end thereof, while a downstream end of the mixing conduit is functionally attached to a feedwell inside the thickener or settling tank, so that the mixing conduit communicates with the feedwell. Where a diluting liquid is introduced into the mixing conduit, the variable-orifice nozzle ensures a substantially uniform degree of dilution of the influent slurry feed stream by the diluting liquid.

Abstract: A polymer-free method and self-draining self-cleaning apparatus for treatment of water with high total dissolved solids including optional pretreatment, precipitation/flocculation, and separation. The pH is raised by addition of caustic soda and/or soda ash. In a vertical clarifier silo, the feed is gently mixed to cause dissolved solids to precipitate and agglomerate to form suspended flocculates. The clarifier includes an internal mixer surrounded by a cylindrical tube diffuser. Rotation of the mixer provides gentle dual circulation patterns within the clarifier that allow for flocculates of a predetermined size to settle from suspension. The clarifier may also include one or more vertical recirculation lines to recirculate some of the heavier flocculates at the bottom of the vessel into the mixer chamber to enhance precipitation via the seeding effect. The suspended flocculates are stripped from the feed water in a centrifugal separator. The clarifier silo may be trailer mounted for rapid deployment.

Abstract: Methods and systems for use of switchable water, which is capable of reversibly switching between an initial ionic strength and an increased ionic strength, is described. The disclosed methods and systems can be used, for example, in distillation-free removal of water from solvents, solutes, or solutions, desalination, clay settling, viscosity switching, etc. Switching from lower to higher ionic strength is readily achieved using low energy methods such as bubbling with C02, CS2 or COS or treatment with Bronsted acids. Switching from higher to lower ionic strength is readily achieved using low energy methods such as bubbling with air, inert gas, heating, agitating, introducing a vacuum or partial vacuum, or any combination or thereof.

Abstract: An apparatus and method treats contaminated water by encompassing within a water-permeable enclosure a clay-based flocculant material for reducing a contaminant entrained in a flow of contaminated water. In one embodiment, the material further comprises a polyacrylamide composition. A placement member attaches to the water-permeable enclosure to impede the flow of contaminated water. An attached or proximately positioned filter captures the flocculant. Alternatively, the flocculant is captured in a clarification settling basin.

Abstract: Methods and apparatus for processing glycol according to various aspects of the present technology comprise a multi-stage treatment system that is configured to receive a feedstock from multiple waste stream sources containing glycol. A pre-treatment stage may be configured to process the incoming the feedstock and provide to a primary treatment stage a water/glycol solution that is substantially identical and allows for a primary treatment process that is not dependent upon the originating source of the glycol feedstock. A post-treatment stage may further process and purify the water/glycol solution.

Abstract: A system, that may be portable, for purifying liquid flowing gravitationally from a source/reservoir into a purified liquid receptacle is described. The system includes a housing with a generally horizontal filtering space. More than one liquid inlet disposed at a top portion of the filter is provided as well as one or more liquid outlets disposed at a bottom portion. The liquid flows in a generally lateral direction through the liquid treatment medium. Two or more first walls extending upwardly into the filtering space from a bottom wall thereof and ending with an apex are provided inside the device. One or more second walls downwardly extending into the filtering space from a top wall thereof are also provided. Each of the walls defines a closed path. The first and second walls jointly cause the liquid to flow in a curvilinear flow path from the inlet to the outlet.

Abstract: One or more computer implemented systems for continuously processing used oils are provided. The system can include a feedstock tank containing feedstock. The feedstock tank can have a sparger and a level sensor. The feedstock tank can be in fluid communication with a first pump, a first filter, a heater, a second filter, first flow meter, a primary nozzle, a secondary nozzle, a motionless inline static mixer, and a first reactor.

Abstract: A modular system for reclamation of a fluid includes a cavitation reactor operative to mechanically oxide the fluid and an ion precipitation system that receives the oxidized fluid from the cavitation reactor and thereafter introduces one or more ions at various locations to initiate precipitation of select materials. The system and associated methodology further includes injecting dissolved air and emulsion breaking chemistry into the fluid before cavitation, coalescing emulsified particulates from the fluid and saturating the fluid in an air saturation chamber that is operable to form a microbial filter.

Abstract: The invention relates to a method for separating the liquid part from the suspended matter in a sludge supplied in a continuous flow at a flow rate of QEB=V/hour. The flow is divided into at least two partial flows which are sprayed on top of one another into a sealed chamber of volume v<V/20, simultaneously injecting air therein at a flow rate d, said chamber being kept under overpressure conditions. The suspended matter of the thus treated flow is then left to decant in a collection container, with the cake or solid part falling to the bottom and separating from the liquid part which is continuously discharged.

Abstract: A system for the production or handling of heavy oil comprises means (18) for introducing an immiscible viscosity-reducing fluid into the heavy oil at an upstream end of a flow line (10,22) to create a dispersion of oil and viscosity-reducing fluid, and means (24,30) for separating the viscosity-reducing fluid at least partially from the oil at a downstream end of the flow line. The separating means comprises a cyclonic fluid conditioning unit (24) connected receive the dispersion of oil and viscosity-reducing fluid from the downstream end of the flow line (22), said cyclonic fluid conditioning unit being constructed and arranged to subject the dispersion to a cyclonic conditioning process; and a gravity separator unit (30) connected to receive the conditioned dispersion from the cyclonic fluid conditioning unit.

Abstract: A high throughput, positive pressure, gravity operated dewatering system for hydraulic fluids, lubricating fluids, and petroleum based fluids comprises a gravity operated dewatering chamber receiving the industrial fluid and a source of positive pressure drying air coupled to the dewatering chamber.

Abstract: A method of purifying raw water comprises the steps of supplying the raw water to a generally vertical, open-ended inlet cylinder (23) in a reservoir (20), exposing the water in the inlet cylinder (23) to air for accomplishing oxidizing of matter, such as iron, manganese, and hydrogen sulphide in the water and/or agitation of the water, allowing the oxidized matter to fall down by gravity to the bottom of the reservoir (20), allowing the purified water to flow upwards past the inlet cylinder (23) and through a distribution disc (24) in the reservoir (20), and removing the purified water from the upper part of the reservoir (20).

Abstract: According to one embodiment, in order to eliminate impurities, and the like, water to be treated is passed through each of reactor vessels, phosphorus contained in the water to be treated is removed by using an adsorbent, and thereafter the liquid held in each of the reactor vessels is discharged through each of first to third treated water discharge paths, thereby eliminating the impurities, and the like derived from the water to be treated. It is possible to eliminate the influence of the impurities in the water to be treated on the discharged desorption agent liquid containing phosphorus from the phosphorus adsorbent can be eliminated, and hence it is possible to obtain a phosphorus-containing liquid containing no substance other than the recovered phosphoric matter material.

Abstract: A device for mixing and aerating a body of water, the device includes a microbial fuel cell comprising an anode and a cathode; an electricity management subsystem electrically connecting the anode and the cathode; and a mixing subsystem electrically connected to the electricity management subsystem. The device can be used to mix or aerate a body of water containing organic material while simultaneously reducing the requirements for aeration. The body of water may provide organic material to the microbial fuel cell to produce electricity to power the mixing subsystem.

Abstract: The present disclosure relates to water treatment systems, and specifically to mobile flotation tanks, mobile chemical mix tanks, and mobile integrated water treatment systems, and methods regarding the same.

Abstract: The present invention relates generally to an environmentally sensitive mobile cleaning system, and more specifically relates to a closed loop water recirculation system for high or ultra-high pressure mobile cleaning apparatus. The system includes a water tank sized to contain an established volume of fluid sufficient to circulate through the system, a pump to pressure the fluid to a cleaning head, a vacuum system to return the contaminated fluid to the system, and a filter means to remove the contaminants from the fluid so that clean fluid can be reintroduced to the cleaning head. The method comprises the steps of increasing the pressure of a fixed volume of fluid in a closed-loop system, jetting or blasting the surface with the pressurized fluid, vacuuming the blasted fluid into the system, and removing the contaminants from the fluid.

Abstract: Disclosed is a method of removing phosphorus from sewage wastewater by electrocoagulation, comprising: providing an electrode assembly comprising an anode and a cathode with a porous membrane interposed therebetween; placing the electrode assembly in an electrocoagulation tank; passing sewage wastewater through the electrocoagulation tank to treat the sewage wastewater by electrocoagulation; and introducing the treated water into a mixing tank to further treat the water.

Abstract: The present inventors have discovered a novel composition, method of making the composition, system, process for treating a fluid containing a contaminant. The fluid may be aqueous. The contaminated fluid may be in the form of a suspension. The treatment reduces the concentration of the contaminant. The reduction in concentration of a contaminant may be sufficient so as to effect remediation of the fluid with respect to the contaminant. The treatment may reduce the concentration of a plurality of contaminants. The present composition, system, and process are robust and flexible. The composition includes zero valent iron, an iron oxide mineral, and ferrous iron. The ferrous iron promotes maintenance of the iron oxide mineral. The iron oxide mineral promotes the activity of the zero valent iron. The process and system may involve multiple stages. A stage may be optimized for treatment with respect to a particular contaminant.

Abstract: A lightweight water treatment system which can be easily distributed and employed by disaster survivors for treating locally available freshwater sources. The water treatment system includes an internal storage volume for maintaining a predetermined volume of water, a water fill port in communication with the internal storage volume provided at a first end of the elongated container for receiving the predetermined volume of water, a sealing member disposed at about the first end of the elongated container for maintaining the volume of water within the internal storage volume, a second end of the elongated container for receiving sediment settling out of the predetermined volume of water and a discharge port disposed superjacent to the second conically-shaped end for controllably releasing at least a portion of the water maintained within the internal storage volume of the elongated container.

Abstract: A continuous flow reactor, including a cylindrical coagulation crystallizer, a funnel type protective baffle for static settling, and a conical static settler. A lower end surface of the cylindrical coagulation crystallizer is connected with an upper end surface of the conical static settler, and the funnel type protective baffle for static settling is connected with an inner wall of the cylindrical coagulation crystallizer.

Abstract: The present invention relates to an apparatus and method for the treatment of water and, in particular, an apparatus and method which may be applied to fluids such as grey water to be treated prior to discharge. The invention is intended for particular use on marine vessels such as house boats to treat grey water which at present is discharged untreated.

Abstract: Systems, compositions, and methods for dewatering and/or increasing a mechanical strength of mine tailings. These systems, compositions, and methods may include combining mine tailings with wicking fibers to form a composite mine tailings mixture. The wicking fibers may provide a conduit for the removal of fluid from the composite mine tailings mixture. The composite mine tailings mixture further may include a binder that may decrease repulsive forces among fine particles that comprise the mine tailings and/or increase attractive forces among the fine particles, leading to a separation of the fine particles from at least a portion of the fluid contained within the composite mine tailings mixture. The composite mine tailings mixture may be placed in a storage or dewatering area as a composite mine tailings mixture deposit, which may include internal structure, such as layers of the composite mine tailings mixture and/or long-range orientation of the wicking fibers contained therein.

Abstract: A feed structure may be used in conjunction with a sedimentation vessel in order to separate solids and liquids, which may be in a slurry, from each other. The feed structure comprises a feed chamber housing a central wall. At least one port is positioned at the base of the chamber. A feedwell that is substantially concentric with the feed chamber is also used. The feed chamber is in communication with the feedwell, wherein slurry flows through the said port to access the feedwell. An outlet is positioned on the feedwell (such as near the bottom of the feedwell). Slurry may flow through the outlet into the sedimentation vessel.

Abstract: A process for water treatment, including a combination of methods from the group comprising coagulation, sedimentation, flocculation and ballast flocculation, which is further improved by the addition of a simplified sludge recirculation system. The recirculation system corresponding to this process allows higher sludge density as well as less significant water volume losses by making the sludge accumulating at the bottom of the sedimentation zone go through a hydro cyclone a certain number of times in repeated cycles thus augmenting the solid particles density of the extracted sludge. The system may also be controlled by a suspended solid analyser, a flow meter and/or a timer. The present invention also includes a method of producing specific fluid flow control behavior with this simplified sludge recirculation system, which furthermore improves the efficiency of the process.

Abstract: A high throughput, positive pressure, gravity operated dewatering system for hydraulic fluids, lubricating fluids, and petroleum based fluids comprises a gravity operated dewatering chamber receiving the industrial fluid and a source of positive pressure drying air coupled to the dewatering chamber.

Abstract: A fluid remediation system for removing particulates from an aqueous stream having a separation component and a clarifier component is described herein. The separation component can include a frame, a scalping shaker for receiving a primary slurry and forming a first effluent, a mud cleaner for receiving the first effluent and forming a second effluent, a desilter for receiving the second effluent and forming a third effluent, a tank for containing the effluents, agitators in the tank, and pumps for pumping the effluents. The clarifier component can include a second frame and a second tank for receiving the third effluent from the separation component, which forms a sludge and a clean effluent. The system can include a controller for controlling the system.

Abstract: A feed system is used in a sedimentation vessel. The feed system includes an inlet for receiving a quantity of feed slurry and an outlet for delivering the feed slurry to a separation zone within the sedimentation vessel. The feed slurry includes a mixture of solids and liquids that are to be separated in a separation zone within the sedimentation vessel. An airlift pump is used to cycle at least a portion of either the separated solids or the separated liquids from the separation zone and return it to the feed system. This returned portion mixes with the feed slurry and may operate to dilute the feed slurry to a concentration for optimal separation. Additionally, feed conditioning chemicals may be mixed into the feed slurry prior to or after the mixing of the feed slurry with the returned portion of the separated products.

Abstract: A system and method includes an aeration subsystem that excites enzymes in the liquid waste passing through the septic system. The aeration subsystem includes a compressor section that compresses the liquid waste and an injector section that injects oxygen into the compressed liquid waste. The system further includes a driver subsystem for driving the compressor section and a control subsystem for activating and deactivating the driver subsystem.

Abstract: A water or wastewater treatment system to reduce phosphorus or other pollutant concentrations in water or wastewater may include an optional primary treatment stage in fluid communication with a biological secondary treatment stage. The secondary treatment stage may, in turn, be fluidly connected with a tertiary treatment stage, which may include a chemical treatment portion for reducing phosphorus or other pollutants to desired levels. The precipitated phosphorus and other solids or sludge produced from the chemical treatment portion may be recycled upstream for reuse in the primary, secondary, and/or tertiary treatment stages. Such recycle may reduce the amount of added chemicals required in the tertiary treatment stage to phosphorus or other pollutants to desired amounts.

Abstract: A device for separating platelets from a fluid suspension comprises a mixing chamber operable to receive and mix fluid suspensions and an aggregating agent to form platelet aggregates and residual fluid components. A filter can be configured to be in fluid communication with the mixing chamber and can be further configured to collect platelet aggregates and allow residual fluid components to pass therethrough. The mixing chamber and the filter are operable by a user without input from an external energy source.

Abstract: One aspect of the present disclosure includes an oil removal reclamation clarifier system in communication with a body of oil laden wastewater fluid and a conduit for transporting the fluid to the reclamation clarifier system. The reclamation clarifier system includes an oil removal mixing containment device having an influent port, an agent inlet, a sludge collection section in a lower portion of the device for collecting the dispersed liquid, a sludge outlet, and, at least one decant valves located on or near an upper portion of a sidewall of the oil removal clarifier device for permitting unsettled material to exit from the clarifier.

Abstract: A flange joint for connecting two objects in a fluid connection so that fluid can flow between the objects. The flange joint has a gasket, and the gasket is installed in the flange joint. The flange joint has at least one channel for feeding additional fluid from outside of the flange joint through the gasket into fluid flowing between the two objects.

Abstract: Plant comprising a homogenization tank (100) equipped with a stirrer (120) and with a pumping unit (140), a connecting pipe (300) leaving the pumping unit (140) comprising an injector of reagents (310) and a static mixer (320), a second chamber (200) surmounted by a mixing tank (210) into which the connecting pipe (300, 320) opens tangentially and comprising a flocculation pan (220) above the sludge pit (230) and surmounted by a filtration chamber (240), a pipe (270) leading down to the bottom (222) of the flocculation pan (220) and a bypass pipe (160).

Abstract: A solvent that reversibly converts from a hydrophobic liquid form to hydrophilic liquid form upon contact with water and a selected trigger, e.g., contact with CO2, is described. The hydrophilic liquid form is readily converted back to the hydrophobic liquid form and water. The hydrophobic liquid is an amidine or amine. The hydrophilic liquid form comprises an amidinium salt or an ammonium salt.

Abstract: The invention relates to a flotation water treatment plant comprising at least: an inlet zone (31) for the water to be treated, which is coagulated and flocculated beforehand; a mixing zone (32), for mixing pressurized and then depressurized water with said water to be treated; a flotation zone (35) separated from said mixing zone by a wall; a clarified-water take-up zone (36) provided in the lower part of said flotation zone (35). According to the technique shown here, said mixing zone accommodates (32) at least one spray nozzle (40, 91, 92) for spraying said pressurized water, said spray nozzle (40, 91, 92) lying close to a panel (33), at least part of which has perforations (331), said panel separating said inlet zone (31) from said mixing zone (32).

Abstract: In one embodiment, the present invention relates to a method for thickening sludge carried along in waste water, wherein the waste water is subjected to a pretreatment reinforcing the flocculation and is subsequently introduced in the direction of gravity into a bath so as to separate the sludge from the water, in which the sludge particles descend under the action of gravity and are removed in the lower portion of the bath characterized in that the waste water, upon its introduction into the bath, is flowed against a baffle, by which the flow of the waste water in the bath is deflected.

Abstract: The invention provides a method of phase separation of a hydrocarbon containing mixed phase fluid composition into at least two separted fluid phases which method comprises introducing (8) a hydrocarbon-containing composition into a phase separator (1) and withdrawing at least two said separated fluid phases (12, 13, 14) from said separator (1), whereby a lipophilic liquefied gas is simultaneusly introduced (24, 19, 17) into said separator (1) with said composition or, preferably, into a fluid-filled region of said separator (1).