Abstract: A multi-stage apparatus and a process for recycling used engine coolant employs a combination of filtration, dissolved air floatation, centrifugation (hydrocyclone separation), semi-permeable nano filtration, reverse osmosis, and continuous deionization for separating ethylene glycol, with or without propylene glycol, and water from used engine coolant. The engine coolant is pre-filtered through a series of filters. The filters remove particulate contaminates. This filtered fluid is then subjected to dissolved air floatation and/or centrifugation to remove organic petroleum contaminants. Then, it is pressurized prior to being passed through semi-permeable nano filtration. The nano filtration separates the feed stream into a ultra filtration solution and a concentrated waste solution. The concentrate solution is returned to a centrifuged coolant tank for continuous circulation through the nano filtration device.

Abstract: A drum filter comprises a pair of circular disks connected in coaxial relation by a plurality of axially extending disc support rods. A cylindrical filter media is disposed between the disc support rods. Unfiltered liquid is admitted to the interior of the drum filter and flows radially outwardly therefrom through the filter media. Reciprocating backwash nozzles direct high pressure liquid radially inwardly against the exterior surface of the filter media to backwash contaminants collected on the radially inner surface thereof into a contaminant collector disposed internally of the filter drum. The filter media is sealably connected to the circular disks by a novel retention system.

Abstract: The present invention relates to a process for fractionating organic circuit board manufacture process solutions by means of at least one very fine filtration step. In the process of the present invention, the dissolved substances present in the process solutions are separated, for example by ultrafiltration, from the organic process solvent, e.g., ethyidiglycol, to permit their respective reuse. The process of the present invention advantageously provides for considerable savings in terms of costs of material and energy and also for a considerable reduction in or even complete avoidance of waste.

Abstract: An apparatus for storing and disinfecting a fluid includes a container (12) and a cap member (16) for containing the fluid and a cap member (16). The container (12) defines an opening (14) through which the fluid is dispensed therein and is removed therefrom and has at least two electrical contacts which mate with at least two electrical contacts in the cap member. The cap member (16) removably seals the opening of the container (12). An ultraviolet source (24) is mounted to at least one of the container (12) and the cap member (16). The ultraviolet source (24) emits ultraviolet radiation to disinfect the fluid contained in the container (12). A power source is electrically coupled to the at least two electrical contacts of the container (12).

Abstract: This disclosure sets out a method and apparatus for recovery of cesium formate in water solution after use in a drilling process where trash and other debris accumulate in the drilling fluid. It incorporates a first stage centrifuge, a second stage centrifuge and a membrane separator serially connected, and incorporates a feedback loop. A feedback loop iteratively redirects solids and heavy weight concentrate after processing and recycles it to enhance recovery by enhanced removal of cuttings and trash in the stream. In addition, cuttings and other solids removed from the fluid stream are introduced into a wash tank, mixed with water, and the cuttings are further processed to remove remnants of the cesium formate. These recovered cesium formate remnants are passed through an evaporator to regain the density loss attributable to the dilutive wash water. The cuttings can then be thrown away without throwing away the valuable cesium formate in the drilling solution.

Abstract: A reverse osmosis composite membrane that has a high salt rejection, a high water permeability, and a high fouling tolerance, and permits practical desalination at a relatively low pressure is provided by coating the surface of a reverse osmosis membrane of aromatic polyamide with polyvinyl alcohol (PVA), for example, and controlling the surface zeta potential of the separation layer within±10 mV at pH 6. This reverse osmosis composite membrane is electrically neutral and controls the electrical adsorption of membrane-fouling substances having a charge group present in water. Therefore, a high separation property can be maintained without fouling the membrane even if water containing a surfactant or a transition metal component is supplied as raw water.

Abstract: A water purifier capable of magnetizing water and adding ceramic components into the magnetized water. The water is magnetized by a rotating permanent magnet, such that its molecular structure is changed into the hexagonal ring structure, and, the dissolved oxygen content of water is increased by passing through a plurality of micro holes or fine grooves on the inside surface of a ceramic filter. Also, mineral components disposed in the double wall of the ceramic filter are added to the water passing through it. Accordingly, the water may be converted into condition suitable to the human body.

Abstract: A method for retrieving excess pharmaceutical process fluid from the hold-up volume of a primary fluid filtration device. The hold-up volume is the volume of excess process fluid which accumulates in the bottom of the filter housing below the outlet opening thereof. Because it is considered valuable, the excess pharmaceutical process fluid is retrieved from the lower housing (22) via a drainage port (23) formed therein below the level of the outlet. The excess process fluid is then filtered in a supplemental filtration device (100) that is connected to the drainage port. The supplemental filtration device has a smaller volumetric capacity than the capacity of the primary fluid filtration device.

Abstract: A counter-flow asphalt plant with a separately controlled and operated dryer 50 and mixer 52 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition. The dryer 50 is rotated by a variable dryer drive 58 about a central longitudinal dryer axis disposed at a dryer angle of declination. Within the dryer 50, aggregates are dried and heated by heat radiation and a hot gas stream generated at a burner head 112 of a combustion assembly 106 positioned inside the downstream end of the dryer 50. The downstream end of the dryer 50 is inserted within the first end of the mixer 52 for delivery of the heated aggregate. The mixer 52 is carried on a tiltable frame 54 and is rotated by a variable mixer drive 88 about a central longitudinal mixer axis disposed at a mixer angle of declination.

Abstract: The electric food processor has a housing in which there is disposed an electric motor with a motor shaft. The motor shaft, via a gear mechanism, drives three or more concentric output drives at different rotational speeds. The common axis of rotation of the output drives is spaced a distance from the motor shaft. Working tools are selectively coupled to the output drives and the working tools rotate in a working container which is placed on the housing. In order to expand the possible uses of the food processor, the fastest output drive rotates at a speed that is suitable for a mixing tool, and the gear mechanism has at least two sets of input gear teeth that are rotatably mounted independently of each other, so that the fastest output drive can be driven out of direct engagement with the slower output drives.

Abstract: A filter separator has a housing provided with inlet and outlet pipes, a filtering element arranged in the housing, a magnetic screen arranged in the housing, the magnetic screen including a plurality of helical rods and magnetic plates fixedly arranged on the rods, the rods being rotatable around the filtering element.

Abstract: A solids dryer is post-connected to an invertible filter centrifuge, wherein a dehumidification and drying of the solids takes place in the invertible filter centrifuge by means of centrifugation, pressure gas compression and/or heat convection and in the solids dryer by means of heat contact and/or heat convection. The invertible filter centrifuge and the solids dryer are connected to one another to form a unit via a closure device. Sensors serve to measure the respectively prevailing degree of dehumidification and drying as well as to determine additional operating parameters. The sensors actuate a common control device which regulates the operating parameters.

Abstract: The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rubber mixture to the front of the gears in the extruder housing. The invention is characterized in that gas vent ports are provided in the extruder housing, at the ends of the teeth of the gears, in an area in which the teeth disengage, and/or that at the entrance side of the teeth filled with the rubber mixture. The gas vent ports are provided in the extruder housing in one embodiment so that they extend on the entrance side over no more than half of the circumference of the chambers. By such an arrangement of gas vent ports it has become possible to ventilate a rubber mixture such that volatile components and moisture contained therein can be outgassed, but the rubber mixture is unable to enter the gas vent ports and clog them.

Abstract: A fuel filter (10) has a filter case (11), and a return path (25) is provided on the upper surface of the filter case (11). Return fuel discharged from a pressure regulator is supplied to the return path (25). The return path (25) having a closed lower end is provided with branch paths (26). The return fuel supplied to the return path (25) passes through the branch paths (26) and flows down into fuel reservoir along the outside peripheral surface of the filter case (11). Electrical charge on the surface of the filter case (11) is reduced when the return fuel flows along the outside peripheral surface of the filter case (11). Kinetic energy of the return fuel is reduced by the energy absorbing effect of the return path (25), the energy distributing effect of the branch paths (26), and the energy absorbing effect when the return fuel flows down along the outside peripheral surface of the filter case. Thus, fuel return sound waves from the returning fuel dropping into the fuel reservoir are reduced.

Abstract: A filter assembly is provided having a housing defining a housing edge. A tapping plate is also provided and is generally circular in shape. The tapping plate defines a tapping plate edge and includes a fluid inlet port and a fluid outlet port. Preferably, the at least one fluid outlet port is a central threaded aperture to enable the filter assembly to be secured to a filter mount of an engine. An interconnecting device is included for interconnecting the housing and the tapping plate. The interconnecting device further retains an external seal generally about the tapping plate edge. The external seal is an economically formed lathe-cut gasket and the interconnecting device includes a first and second extension member. The first extension member is formed integrally with the tapping plate at the tapping plate edge. The second extension member is formed integrally with the housing at the housing edge.

Abstract: The present invention comprises a fluid filter element which has a hollow perforate cylindrical supporting core. A relatively fine filter media of substantial cross section is spirally wound about the supporting core with adjacent layers spaced from each other and with the fine filter media accommodating fluid flow for filtering in both a radial and circumferential direction through the cross section and with free access through the cross section to the supporting core. In substantially the same manner, a relatively coarse filter media of substantial cross section is disposed in the space between the layers of fine filter media and with the coarse filter media exiting at the supporting core, the coarse filter media accommodating fluid flow for filtering in both a radial and circumferential direction through the cross section and with free access through the cross section to the supporting core.

Abstract: An asphalt plant including a plurality of asphalt processing components, with a selected first set of the components producing volatile emissions and a selected second set requiring process heat energy. A central burner assembly is connected to the selected second set of components by an insulated duct system for providing heat energy to the second component set. A first duct system is adapted to capture a portion of the volatile emissions produced by the first component set and convey the captured emissions into the central burner for mitigation. The central burner is preferably a media burner incorporating flameless combustion technology as well as an adjustable internal fuel injection system, which results in safer and more controllable combustion. Even with captured fugitive emissions in the inlet air, the fuel injection system keeps the concentration of combustible materials well below the lower flammability limit.

Abstract: Particles of paint overspray present in floating, and in dispersed form, as well as in submerged and coagulated form are removed from an aqueous turbid liquid. The dispersed and submerged particles of paint overspray form sediment and the sediment is then removed. The sediment is allowed to settle out of a quiescent, turbid liquid onto the bottom of a first tank, whereas the floating particles remain on the surface of the turbid liquid. The sediment is flushed into a second tank by lowering the surface level of the turbid liquid and is then concentrated in this second tank. The surface level of the turbid liquid is then raised and the turbid liquid is allowed to overflow across a flow edge in such a way that the floating particles of the paint overspray are floated off. The turbid liquid, such as turbid water that has been cleansed is drained off.

Abstract: A membrane separation device includes a washing apparatus and a membrane module. The washing apparatus is formed of a vessel for accommodating the membrane module therein, a first tank and a second tank for accommodating washing liquid for washing the membrane module in the vessel and connected to the vessel, a compressed gas feeding device connected to the first and second tanks for selectively feeding compressed gas into the first and second tanks to flow out the liquid therefrom, and conduits connected among the vessel, first and second tanks, and compressed gas feeding device. A conduit selecting device is attached to the conduits for feeding the washing liquid in one of first and second paths. In the first path, the compressed gas in the compressed gas feeding device is fed into the first tank, and the liquid in the first tank is fed into the vessel through the liquid inlet to wash the membrane module accommodated therein and is led to the second tank.

Abstract: A method for separation, identification, and quantification of radioactive species in an environmental fluid, such as surface or ground water, by passing the fluid through a sheet article. The sheet article is an essentially homogenous, fibrous or fibrillated, matrix or membrane that includes (1) ion-specific separators that sorb or react with the targeted radioactive species and (2) scintillators which emit light in response to radioactive emissions from the targeted species. The separators can be macrocyclic ligand-containing particles. The scintillators can be particles, fibers, a coating on the particles, or a coating on the fibrous matrix or membrane. The scintillator can be an organic scintillator or an inorganic crystalline scintillator. In one embodiment both the scintillator and the separator are incorporated into the same particle or fiber. A scintillation counter can be used to detect and quantify the emitted light.