114results about "Settling tanks heating/cooling" patented technology

Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce, often associated, offensive odors. Irrigation of oxygenated liquid on top of a permeable cover effectively creates an aerobic treatment zone at the top of the lagoon whereby odorous gases being produced anaerobically below the cover are metabolized within this zone before being released to the atmosphere. This same system also serves to increase evaporation from the overall waste handling system therefore substantially reducing or eliminating the need for land application of treated wastewater.

A method has been invented for separating components of a wastewater stream, the stream containing water, oil (e.g. heavy oil and/or light oil), undesirable organic material (solid and/or liquid), and contaminating solids, the method including feeding a wastewater stream to a first pre-treatment unit producing a first pretreated stream, feeding the first pretreated stream to a first centrifuge for centrifugal separation, producing a first liquid centrifuged stream, and a second liquid stream, and feeding the first liquid centrifuged stream to a second centrifuge producing a resultant centrifuged stream of recoverable oil and a water phase centrifuged stream which can be treated further or fed back to a source for re-use. The source may be a facility from the group including refineries, chemical plants, paper mill plants, and oil and gas processing facilities.

A lint filter having a succession of mesh screens which are arranged in parallel in a tank which receives lint-containing water from a laundry facility. The mesh screens are positioned so that the lint-containing water must pass through the screens in order to leave the tank. The lint-containing water is sprayed evenly on one side of the tank and proceeds across the tank toward the mesh screens. The mesh screens are angled so that lint and particles contained in the lint-containing water are allowed to fall to the bottom of the tank. Multiple exits allow lint-filtered water to leave the lint filter.

In one aspect of the invention, a method and related system efficiently and effectively recover a significant amount of valuable, useable oil from byproducts formed during a dry milling process used for producing ethanol. The method may include forming a concentrate from the byproduct and recovering oil from the concentrate. The step of forming the concentrate may comprise evaporating the byproduct using a multi-stage evaporator, as well as recovering the oil before the final stage of the evaporator. Further, the step of recovering oil from the concentrate may comprise using a centrifuge and, in particular, a disk stack centrifuge. Other aspects of the invention include related methods and subsystems for recovering oil.

The fuel properties of petroleum hydrocarbon waste having an API gravity varying from about 5 to 30 are improved by heating the hydrocarbon to a temperature of about 35° C. to 90° C. and mixing the heated hydrocarbon stream with a suitable solvent to reduce the viscosity of the hydrocarbon, which is then separated by a centrifuge to obtain an aqueous phase stream, an oil phase stream, and a separated solids stream. The oil phase stream has a viscosity range of about 250 centipoise (cP) to about 1000 cP. The oil phase stream is utilized in a refinery, while a slurry fuel is prepared with the separated solids stream and aqueous phase stream as a feedstock for road asphalt, a fuel for a combustor, or a fuel for a gasification process. The oil phase stream is used for fuels and feedstock for making carbon fiber.

Method for separating blood plasma particles from a blood plasma suspension in a self-discharging centrifuge having two or more discharge slits and axially stacked baffle plates, in which the blood plasma particles are separated from the liquid phase by centrifuging and removal of the liquid phase, suctioning off liquid remaining in the drum after separation of the blood plasma particles and discharging the sediment of solid blood plasma particles from the drum by centrifugal force into a collecting container underneath the drum, the drum and the blood plasma sediment being cooled during one or more of the process steps.

Process for completely recovering the reusable components of an abrasive slurry used in slicing crystalline materials of silicon, quartz or ceramics when it becomes exhausted and enriched with undesired waste matter. The process consists of an initial centrifuge separation of the exhausted slurry as such and of a wet size-sorting treatment of the fraction containing the abrasive grains obtained from the centrifuge, carried out in a battery of hydrocyclones or centrifuges connected in series. The section for the recovery and purification of the abrasive grains comprises a multifunctional apparatus that performs all the required operations within a single pressure vessel. The process enables the complete recovery of the reusable abrasive grains contained in the exhausted slurry as well as of the suspending or cutting liquid of the abrasive slurry, in order to reuse both components in the manufacturing process. The invention also concerns an apparatus for carrying out the treatment of exhausted abrasive slurries according to the process described.

Pasteurization system with purification of the process liquid, with a feed and evacuation conveyor system for containers. At least one treatment zone with sprinkling nozzles to spray the containers with a process liquid such as water, the treatment zone including a screening unit with a sedimentation area for the deposition of sediment from the process liquid, a closed-loop circuit to re-use the process liquid, with devices to remove the sediment from the sedimentation area for each zone and to feed the sediment into a central filter unit. The central filter unit has at least one filter module for the filtration of solid matter from the inputted sediment so that the filtered process liquid is conserved. Devices to return the filtered process liquid to one or several treatment zones are also provided.

A combined sedimentation and pressure floatation wastewater treatment tank includes a tank body, a sedimentation treatment device and a pressure floatation treatment device. The tank body contains a predetermined amount of wastewater for treatment. The sedimentation treatment device is operated to remove relatively heavier sludge from the wastewater by sedimentation treatment, and the pressure floatation treatment device is operated to remove relatively lighter sludge from the initially treated wastewater by pressure floatation treatment. In operation, the wastewater is initially treated by the sedimentation treatment device and is further treated by the pressure floatation treatment device. Alternatively, the wastewater is initially treated by the pressure floatation treatment device and is further treated by the sedimentation treatment device.

A method for processing interface emulsion, water, and solids contained within a separator vessel that comprises the steps of continually extracting those components from the vessel and then passing them through a gas flotation cell. The cell, which is preferably a vertical induced gas flotation cell, separates the oil and water contained in the interface emulsion and discharges recovered oil from an upper portion of the cell and treated water from a bottom portion of the cell. The recovered oil and treated water may be further processed and recycled to the vessel or sent elsewhere. The treated water may also be recycled to the cell or sent to a process sewer. Fuel gas residing in an upper portion of the cell may be cooled and passed through a splitter. All the steps of the method comprise a closed system with no air emissions.

A method of treating slop oil and slops from the SAG-D (steam assisted gravity-drainage) very heavy oil-bitumen crude oil production in such locations as Alberta and Saskatchewan provinces in Canada, Russia, Venezuela, Saudi Arabia, and Kern County, Calif., involves mixing the slop oil and slops with chemicals to help separate out water from the slop oil and slops.

An apparatus for treating oil-based sludge includes a boiler, a heat exchanger having a circulatory steam path in fluid communication with the boiler and a sludge path receiving sludge, a plurality of serially-aligned mixers in fluid communication with the sludge path of the heat exchanger, a separation tank in fluid communication with the plurality of mixers, and wherein the separation tank includes a tank having a plurality of walls, a hydrocyclone mounted within the tank receiving sludge from the plurality of mixers, wherein the hydrocyclone includes a solids outlet directing a solids component towards a bottom portion of the tank and a fluid outlet directing a fluid component into the tank, a means for conveying separated solids along the bottom portion of the tank to a solids outlet, and a plurality of fluid outlets vertically located along a tank wall, wherein each outlet includes a valve providing selective fluid communication from the tank.

A method for processing oil from oil wells having water bound locations whereby it is necessary to place the process containment vessels upon host structures that are floating and subjected to a swaying motion caused by the wave action of the water in which the host structures float. The process containment vessels are of a vertical cylindrical configuration to minimize their footprint and to mitigate the effect of tilting on the spatial process geometry inside of the vessels and further the vessels contain internal baffles that create horizontal flow patterns inside of the vertical vessel for a more efficient gravity separation process.

Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.

The present invention comprises a gravity draining automatic FOG interceptor with solids removal capability used as a first stage in the treatment of gray water. A preferred embodiment comprises a multi compartment container, the compartments separated by baffles, having a serviceable solids strainer in a first compartment, a second compartment having a cogged belt for FOG removal and collection, a third compartment for collection of clarified effluent, and a fourth compartment for tertiary treatment of the gray water effluent, for example, the introduction of biotechnology. The unique baffle configuration prevents biotechnology backflow migration from the fourth compartment with resulting bacterial contamination of the FOG.

Settling devices for separating particles from a bulk fluid with applications in numerous fields. The particle settling devices include a first stack of cones with a small opening oriented upwardly or downwardly. Optionally, the settling devices may include a second stack of cones with a small opening oriented downwardly or upwardly. The cones may be concave or convex. These devices are useful for separating small (millimeter or micron sized) particles from a bulk fluid with applications in numerous fields, such as biological (microbial, mammalian, plant, insect or algal) cell cultures, solid catalyst particle separation from a liquid or gas and waste water treatment.

The invention discloses an oil recovery device and an oil recovery method used for a petrochemical engineering machine. The oil recovery device comprises a storage tank, a jacket and an oil suction pipe, wherein a load-bearing net is installed in the storage tank; the jacket is positioned on the bottom surface of the inner wall of the storage tank; an exhaust pipe installed on the left side of thejacket penetrates through the left side of the storage tank; a transmission shaft is respectively installed in and above the storage tank; the left side of the transmission shaft is provided with a second motor; the outer side of a conveyer belt is provided with an oil removal plate; the upper end of the storage tank is provided with a scraper blade; the oil suction pipe is positioned below a floating plate; the right end of a hose penetrates through the surface of the storage tank. According to the oil recovery device used for the petrochemical engineering machine, cold water is injected into the jacket to carry out cooling processing on hot oil to accelerate oil and water layering, an agitating vane is used for cleaning the inner side of the jacket to prevent precipitates from depositing in the jacket, and the scraper blade is used for scraping oil scraps on the surface of an oil plate so as to improve oil liquid recovery purity.