Abstract: A water treatment tank for separating particles from water, has a separation chamber with at least one set of inclined parallel plates, with a slot between each pair of adjacent plates for substantial horizontal flow of water between the plates. A sludge chamber is located beneath the separation chamber for collecting sludge including the particles separated from the water during passage of the water through the separation chamber. An inlet chamber on one side of the separation chamber introduces the substantially horizontal flow of water into the separation chamber, and an outlet chamber on an opposite side of the separation chamber receives the flow in the substantially horizontal direction from the separation chamber. The outlet chamber is located above and communicates with the sludge chamber and further separates particles from the water in the outlet chamber, the particles descending into the sludge chamber.

Abstract: An apparatus for separating a contaminated liquid diesel fuel and the like into a substantially uncontaminated homogeneous raffinate fuel portion and into a heterogeneous extract portion. Upon being subjected to sufficient circular flow, in an environment emulating the action of a centrifuge, the heavier liquid and solid components are caused to gravitate out of the diesel fluid and the like. This apparatus is constructed with an elongated housing means which is preferably disposed between the fuel tank and fuel filter of a diesel engine and the like. Contained longitudinally within the elongated housing is a separator chamber having a portion of a frustoconically shaped centrifugation surface which directs the incoming impure and contaminated fuel mixture into a turbulent and circular pattern.

Abstract: A mechanical device is used for separating oil films from the surface of water or for separating any two immiscible phases where the lighter phase forms a thin film on the top of the heavier phase. Both phases flow into the airlift scavenger outer vessel through a strainer which provides easier access to the lighter or oil phase due to larger orifices being located at the top of the strainer. After flowing into the vessel, both phases flow downwards to an expansion zone where the fluid velocities drop. This allows the large oil slugs to rise to the top of the outer vessel. The water phase, containing medium and small sized oil slugs, flows downwards to a baffle that turns the flow upwards. This causes the medium sized oil slugs to reverse their downward motion and rise to the top of the outer vessel to agglomerate at the top. This oil phase is continuously pumped to a storage vessel for recovery.

Abstract: An oil removal device for separating floating oils from water or water-based liquids. A rotating disk lifts viscous oils frown the water or water-based liquid. The oil is removed from the disk by wiper blades on either side of the disk on the downward part of the disk's travel. The oil then falls into channels and is channeled into a storage container. A support frame comprising a base and a center post attached to the base is connected to and supports the disk, wiper blades and channels. A gravity separating chamber could be used in place of the storage container. Water collected by the disk is diverted from the oil by a small-scale gravity separator module. The gravity separator module includes a weir having a gap or space at the bottom to separate the water from the oil.

Abstract: A compact gravitational oil-water separator particularly adapted for use in small drainage systems in order to avoid pollution to the environment is provided with a plurality of separating components housed within a tank. More specifically, these components include a baffle member which provides initial separation of an incoming oil-water flow stream and distributes the flow substantially across the entire width of the tank. After the flow impinges the baffle member, the flow is directed downward towards a sediment bucket which captures any large particles separated from the flow and then the flow is directed upwardly at an angle through a coalescer unit. After exiting the coalescer unit, the flow is guided over a separation plate and then is re-directed, in a reverse direction, to an inlet opening of an outlet flow passage. By reversing the fluid flow, substantially the entire tank is utilized in the separation process.

Abstract: An oil-and-water mixture is supplied to a tank which is closed at the bottom and open at the top, generally midway between top and bottom. A closed vessel envelops the upper portion of the tank. A vacuum is drawn at the top of the tank and vessel. An oil coalescer is placed between the mixture supply and the open tank top and a water coalescer between the supply and the closed tank bottom. Separated oil spills over the open tank top into the vessel, and is discharged from there. Separated water is discharged from the closed tank bottom.

Abstract: A separator for separating contaminants from a base liquid. The separator includes a roof arrangement, part of which extends downwardly and radially inwardly into the liquid in the separator. The roof arrangement is generally in inverted conical form. The decontaminated liquid flows from the separator through a flow modifying member which dampens any circulating flows in the liquid, and flows upwardly out of the separator to a reservoir defined by the inverted conical roof arrangement. The arrangement also includes structure for releasing gases from the volumes beneath the roof arrangement, thereby maintaining the whole of the roof arrangement in contact with the liquid to assist in reducing circulating flow in the liquid on the upper regions of the separator vessel.

Abstract: A method of producing an aqueous solution of slaked lime is disclosed the steps of: introducing water into a slaked lime-dissolving apparatus comprising a dissolving tank, a water supply piping connected to a lower part of the tank, a stirring blade disposed within the tank in its bottom part, an effluent piping connected to an upper part of the tank for discharging aqueous slaked lime solution, and a fluidized slaked lime layer height-control device disposed within the tank above the stirring blade, subsequently introducing a predetermined amount of slaked lime into the tank, feeding water, with low-speed stirring, to the tank from the water supply piping in such a rate that the water in the cylindrical or rectangular upper part of the tank ascends at a rate of from 0.25 to 1.2 mm/sec, and taking out an aqueous solution of slaked lime from the tank through the effluent piping.

Abstract: There is disclosed a fermentation device having a peripherally extending wall, a gas-impermeable cover extending over the surface of the device, and attached at its peripheral edge to a top part of the wall, and a gas collection conduit extending for at least part of the periphery of the device within the wall. This device may be used for wastewater treatment enclosures.

Abstract: Device for treating waste water, especially rainwater by jointly carrying out degritting, degreasing and settling, which includes a degritter fitted with a grit trough, passed through by a descending then ascending flow of the water to be treated, a degreasing surface provided above a part of the degritter and the feed region of the settling tank, and a settling tank which includes a feed or presettling basin, a floor, a laminar settling region and an extraction trough, wherein the partition separating the degritter from the settling tank includes a flap valve making it possible, when it is open, to transfer the untreated water without perturbation towards the settling tank, and therefore allowing correct settling during this filling phase.

Abstract: Disclosed is a liquid to liquid coalescing separator (10) in which the liquid flows through sides of upright perforated tubes (20). One of the liquids coalesces on the inner walls of the tubes until large enough to break away and flow out of internal passages in the tubes, and the other liquid free of coalesced liquid flows through the tubes and to an outlet (22).

Abstract: Grease is separated from a mixture of grease and water in a grease collection tank having first and second access ports by skimming the grease from the mixture with a skimmer, and pumping the grease with a pump located in the first access port from the skimmer through a conduit to a storage container located in the second access port.

Abstract: A liquid purification system capable of separating a first liquid from a second liquid, in which the first liquid is a corrosive aqueous liquid that is wholly or partly immiscible in and forms a discontinuous phase with a second, continuous phase-forming organic liquid is provided including a housing, a fluid inlet in the housing, a first liquid outlet in the housing, a second liquid outlet in the housing, at least one coalescing assembly for coalescing the first liquid, and a liquid separating region in the housing. The coalescing assembly has at least one coalescing element which includes a halocarbon polymer packing material having a solid capture efficiency of as high as 20 .mu.m, is substantially chemically inert to corrosive liquids and is adapted to separate liquids differing in interfacial tension of at least about 0.6 dynes/cm.

Abstract: A clarifier for separating suspended solids from waste water to provide clarified water, including a generally rectangular tank for containing waste water to be separated, the tank including generally parallel spaced apart first and second sidewalls, each sidewall having upper and lower sidewall portions, and the tank also including upper and lower regions; a first influent passage extending along at least a portion of the first sidewall and comprising an aperture for introducing waste water into the tank; a first effluent passage proximate the influent passage and including a weir over which clarified water flows for removing clarified water from the upper region of the tank. The clarifier preferably includes a baffle mounted to define a space between the first sidewall and the baffle, and a distribution baffle proximate the aperture.

Abstract: There is disclosed a container for collecting hydrocarbons which might leak from a source, such as a loading or unloading line of and oil storage tank, and which, for environmental purposes, should not be permitted to spill out of the container into the open area. The container is of such construction that a hard rain or other addition of large quantities of water to the container will not cause the hydrocarbons to spill out of the container.

Abstract: An electric field is applied to a coalescer type filter element in which the mesh size decreases in a step-like manner toward its outside. A subject liquid is passed through the filter from its inside to outside. A primary processed liquid discharged from the filter is introduced into an oil-water separating space provided outside the filter which space has an elongated path and to which space an electric field is applied. While the primary processed liquid passes through the oil-water separating space, rise of separated oil and fall of separated water are facilitated.

Abstract: A generally vertical tube communicates at its lower end with a reservoir containing the heavier of two liquids to be separated (water in the case of oil and water separation). A vacuum system is used to create at the top of this tube a lower pressure than at the bottom. The mixture of the liquids to be separated is injected into the tube at an intermediate location between top and bottom with relatively low velocity and turbulence, and close to, but below the level of the interface between the two liquids, which becomes established as they separate. The interface level location is maintained by controlling the top-to-bottom pressure difference and the evacuation rate of the lighter liquid.

Abstract: Apparatus for processing machine tool coolants wherein the used coolant fluid includes emulsified oils of light density or the like to be separated from a heavier density metal working fluid such as oil or water. The apparatus also removes particles, bacteria and odor from the processed fluid. Contaminated used coolant is prefiltered of particles prior to passing through a coalescer separation reservoir consisting of a plurality of adjacent configured plates permitting the low density emulsified oils to rise to the surface of the liquid within the separation reservoir. The emulsified oils pass over a weir and are drained away, and the skimmed coolant fluid passes from the separation reservoir to an accumulation reservoir whose level is sensed by a float controlling a pump which removes the coolant fluid from the accumulation reservoir and passes the fluid through a fine activated charcoal filter to complete the processing.

Abstract: A fuel separator designed to separate water and contaminants out of fuel being used in internal combustion engines. Contaminated fuel enters the separator body by inlet port located in the upper portion of the separator body. Having a top, a conical bottom and a sidewall, and having an inlet port for fuel to be purified and an outlet port for purified fuel in an upper portion there of a pipe adjacent said sidewall extending downwardly from said inlet port, to a lower portion of said separator body and having a downward outlet at a lower end.A deflector body connected to said lower end of said pipe and extending away from said pipe at a downward angle to a C-shaped lip curving downwardly and back towards said pipe which causes the fuel to flow in a rotating motion and subsequently causes a vacuum to be formed at the conical shaped bottom of the separator body.

Abstract: A suction skimmer for removing an upper portion of a liquid from a vessel under substantially laminar flow conditions which includes a body member having a fluid flow passageway extending therethrough and at least one slot formed in an upper portion of the body member which openly communicates with the fluid flow passageway. The suction skimmer also includes a throttle assembly for varying the length of the slot in the body member.

Abstract: In combination, a flow control bypass basin for receiving rainfall runoff water from a surface, an immiscible liquids separator downstream of the bypass basin, and a drain. The bypass basin passes the initial, dirty and oily, portion of the rainfall runoff to the separator and bypasses subsequent runoff water instead to the drain. The bypass basin includes a tank, an inlet in communication with the tank's interior, a primary outlet from the bypass basin to the separator, and a bypass outlet from the bypass basin to the drain, with the bypass outlet being located a substantial height above the primary outlet. Interposed between the bypass outlet and the interior of the tank is a riser tube having a mouth disposed in the lower portion of the tank and an upper end closed to the interior of the tank but open to the bypass outlet.

Abstract: The invention relates to an apparatus for the removal of clarified waste water from circular tanks which have a central waste-water inlet. It is notable for a submerged pipe which is constructed as a ring conduit provided concentrically with the vertical axis of the ring tank and is arranged underneath the surface of the clarified waste water in order to draw off the clarified waste water uniformly, the drainage of the latter being regulatable independently of the incoming amount by means of a control system and the water level in the tank being controllable in a constant manner by means of said system.

Abstract: The separator comprises an elongated, cylindrical, horizontal pressure vessel. An involute feed inlet introduces the drilling fluid into the top of the vessel chamber at its first end. The feed inlet is designed to reduce the flow velocity of the incoming feed stream and introduce it horizontally toward the first end head of the vessel. A weir, slanted away from the first end head, extends upwardly from a point close to the head's base. The curved head, vessel side wall and slanted weir form an inlet compartment of hopper-like configuration designed to funnel settling cuttings to a bottom outlet for removal with an auger pump. This design enables the cuttings to be removed while drilling progresses, without the build up of cuttings piles. The vessel also has a second weir at about its midpoint, for trapping fine solids in a second compartment. Riser outlets are provided in the second compartment for water removal and in the third compartment for oil removal. Gas is removed through an overhead outlet.

Abstract: Raw feed water is continuously clarified at a large throughput rate in a single, shallow tank using a flotation process carried out simultaneously in multiple sectors of the tank. Raw water feeds into a rotating trough. A fixed manifold system in the trough dispenses pressurized water containing dissolved air to release microscopic air bubbles. A set of headers each radially extend outwardly from the rotating trough. Each header distributes water and bubbles to a sector of the tank with a net zero velocity. A set of rotating extractors each receive clarified water from the bottom of a preceding sector. A set of scoops skim floated sludge from the water in the tank. The sludge is lifted, as by the rotation of the scoop and/or by a pumped conduit, over the rotating trough to a sludge outlet pipe. In one form the scoop has at least two blades each with an eccentrically located, radially extending compartment that receives, lifts, and then dumps the skimmed sludge as the scoop rotates about its axis.

Abstract: An apparatus for removing grease from a grease trap separator containing grease and water and transferring the grease to a remote location includes an enclosed transfer tank, a first transport tube having an inlet end positioned to contact the grease in the grease trap separator and an outlet end extending into the tank, a second transport tube having an inlet end positioned to contact the water in the grease trap separator and an outlet end extending to the tank, a transport means arranged to convey the water through the second transport tube between the tank and the grease trap separator, a discharge pipe extending from the tank to a remote location, a first sensor for determining when the tank is filled with grease, and a second sensor for determining when the tank is filled with water, the first and second sensors controlling the action of the transport means.

Abstract: In a gravity-type separator for floating and sinking matter operating without a free level, both the separated floating matter and the separator content must be withdrawn or removed. According to the invention, this is accomplished with a pump that on the suction side has connecting ducts to the vertical center of the separator housing and the sinking matter outlet, and on the pressure side has connecting ducts to the waste water inlet duct and the clean water outlet duct. The pressurized water duct for the floating matter removal is taken from the inlet duct.

Abstract: A sludge collector includes a collection box disposed within a sludge holding tank containing a liquid and the sludge or other materials to be collected. A floating weir is positioned at the inlet of the box to control the depth of a stream of materials flowing into the box. The weir operates to automatically match the flow rate into the box to that out of the box without employing complex sensing or actuating mechanisms while at the same time assuring that adequate turbulence is created in the box to mix sludge with the liquid prior to removal. The weir is also designed so as to reliably handle sticky materials. Preferably, the pump is specially designed to handle sticky materials without clogging, and baffles are located upstream of the collector to facilitate prompt sludge collection.

Abstract: A reactor apparatus including a fluid bed reactor wherein liquid to be processed is conducted upwardly therein through a bed to fluidize the bed, the bed including particulate solids having biological material supported thereon, and the liquid forming an effluent head above the bed. The reactor apparatus also includes a control apparatus for removing excess biological material from the reactor. The control apparatus includes a tubular separator column which is emersed in the liquid effluent head, and a telescoping sludge valve that has a draw-off port communicating openly with the effluent head surface and that is adjustable to raise and lower the draw-off port relative to the effluent head surface to control the sludge withdrawal rate. The control apparatus also includes an agitator arrangement that withdraws bed particles from the separator column, shears excess biological material from those particles, and then returns the partially sheared particles and sheared biological material to the separator column.

Abstract: A first stage of a two stage apparatus for separating floating paint spray particulates from a collection tank that receives the waterfall backdrop from a commercial paint spray booth has a vertically pivotal weir hinged to a weir box that receives the resulting watery sludge as the floating solids and surface water skim over the weir. A float is connected with the weir by a dog-leg rod to control the flow over the weir at a preselected rate in response to the level of sludge in the weir box, thereby to minimize the proportion of water in the sludge. The sludge is pumped from the weir box into an inlet at the lower end of a consolidator tank. A compressed air diffuser emits streams of minute air bubbles below the inlet gently carries the floating particulates to the water surface where they accumulate and are gradually forced upward as a mass above the surface by underlying particulates continually entering the accumulator. Water from the uppermost particulates drains back into the accumulator.

Abstract: In order to improve an apparatus for removing wax particles from circulating water from spray booths, comprising a system tank, to which the circulating water coming from the spray booth can be fed via an inlet, such that an efficient removal of wax particles from the circulating water is possible, it is suggested that a separation zone be provided in the system tank following the inlet, the wax particles floating up into a layer near the surface in this separation zone, and that an intake of a suction means for a floating phase comprising the layer near the surface be arranged in the system tank on a side of the separation zone opposite to the inlet.

Abstract: A paint thinner recycling tower device (10) including a reservoir member (30) for collecting and separating contaminated paint thinner that is introduced into the lower portion of the reservoir member (30) by tube means (35) (43) which extend from a filler member (40); wherein the upper portion of the reservoir member (30) is provided with a flexible outlet hose (51) for draining the clarified paint thinner (83) from the upper portion of the reservoir member (30).

Abstract: Disclosed is a circular gravity clarifier for and method of clarifying liquids of entrained liquid droplets and solids. The clarifier has an upright cylindrical body, a cylindrical baffle extending substantially the depth of the body forming an annular flow path, a rotating stilling well in which the liquid to be clarified is introduced and flows downwardly in a generally cone shaped pattern, the liquid droplets rising to the surface where they are removed, and the clarified liquid flows upwardly in the annular flow path and is discharged. A number of features of the clarifier and the method is disclosed.

Abstract: In order to easily and correctly adjust and set horizontality of an overflow weir in a treatment tank, the center portion of the overflow weir is supported through a fulcrum shaft in such a manner that the overflow weir can swing to the right and left, and an adjustment position fixing member is engaged with the overflow weir.

Abstract: An oil/grease separation apparatus includes a chamber for receiving a liquid flow containing water, oil/grease and gross solids. An inlet section is separated from a downstream section by a weir, so that a higher static water level is maintained in the inlet section than the downstream section, to facilitate one-way passage of oil/grease from the inlet section to the downstream section. A grinder/pump has an input port in a lower portion of the inlet section. The inlet section has an inlet port, a strainer separating the inlet port and the top of the weir to inhibit passage by solids to the downstream section, and a bottom which slopes downwardly toward the input port of the grinder/pump. An oil/grease separator located in the downstream section removes oil/grease from water held in the downstream section.

Abstract: A system and a process for separating impurities such as grease, fuels and solid particulate matter, from water contaminated therewith, comprising passing the water to be treated through a first cleanable strainer bag assembly for filtering solids, a holding/settling tank for separation of an oily and water phase and for precipitation of solids, a second cleanable strainer bag assembly having at least one strainer bag of a porosity finer than the porosity of the strainer bag of said first cleanable strainer bag assembly, a heavy oil gravity separator, a light oil coalescer, a further oil and petrochemical and very fine solid separator with a replaceable polypropylene element for adsorbing or absorbing oil and filtering solids, and preferably also a carbon filter assembly. The invention makes possible the economical removal of impurities and the reclaiming of water with a residual impurities level of less than 5 parts per million.

Abstract: A flotation device for the separation of nonmiscible liquids, particularly the separation of water and hydrocarbon pollutants, comprising a cylindrical tank divided by partitions into a feed flow rate homogenization compartment, at least one flotation cell equipped with a cyclone-turbine and a skimming chamber with self-stabilizing chute, and a tranquilization compartment, characterized in that said cyclone-turbine is equipped with a throttling disk and vortex stabilization baffles, and that the skimming chute is equipped with lateral floats and counterweights.

Abstract: A separator apparatus for breaking emulsions, particularly an emulsion formed of the hydrocarbon liquid and an aqueous solution, wherein the emulsion is introduced to a main separating tank. The latter includes at least one inlet for introducing emulsion, and a separate discharge port for conducting hydrocarbon-free aqueous component from the tank. An overflow trough positioned near the tank proportion includes a stripping weir which passes the flow of the hydrocarbon which has floated to the surface of the heavier water component. Emulsion flow to the tank is controlled by a flow regulator comprised primarily of a water level sensing means.

Abstract: A separation apparatus for improved separation of liquids containing finely divided suspended particles having multiple stacks of parallel interceptor plates which divide the separation vessel to provide an annular space between the parallel interceptor plates and the vertical wall of the separation vessel to thereby form an inlet manifold for the plates which manifold provides a uniform, uninterrupted flow to each stack of plates. The arrangement of plates also forms an outlet manifold which provides a uniform flow from each stack of plates and directs the liquid stream having a reduced level of finely divided suspended particles downward in the separation vessel to an exit in the lower end of the vessel. The feed liquid is introduced into the lower end of the separation vessel with an inlet distributor which initially directs at least a majority of the feed liquid in a generally downward direction to effect a primary separation prior to being introduced into the stacks of parallel interceptor plates.

Abstract: A separator for immiscible fluids and particulate matter of differing denies provides a plurality of stages of fluid flow velocity reduction by change of cross-sectional areas between a plurality of flow regions (e.g. conduits and chambers) and separates a fraction of the introduced fluid or suspended particulate matter at each change of velocity whereby flow velocity may be reduced to a degree greater than accounted for by the change of cross-sectional area from stage to stage when significant amounts of materials to be separated are present in the input fluid. Further, a substantial effective length is provided, relative to the footprint of the separator. This length and gradual slowing of the fluids therein provides generally laminar flow and low turbulence. By doing so, overall volume of the passive separator is reduced and separation efficiency is substantially improved.

Abstract: Oil and water separation apparatus comprising a reaction chamber having an inlet through which a mixture of oil and water may be introduced. A reaction that extends upwardly from an intake opening therein located in the reaction chamber and out of the chamber. The apparatus also has an ozone generator and a conduit through which ozone may be channeled from the ozone generator into the upwardly extending reaction tube. A pump is provided for pumping water and oil upwardly through the reaction tube entrained with ozone and out of the reaction chamber. A filter is provided for oil oxidized to particulate form by the ozone.

Abstract: A vessel for the takeup of light liquid floating on the water surface and a corresponding mother vessel has at least one air-filled cavity which is adapted to be filled or discharged with water for the adjustment of the draught, a light liquid receiving assembly located at the front vessel part and a light liquid receiving, the light liquid receiving room communications with the outside water so that the received light liquid progressively displaces the water in the light liquid receiving room.

Abstract: This invention relates to an apparatus and method for separating immiscible liquids having different specific gravities. Although the disclosure illustrates the invention by showing its application to the separation of oil and water, the invention may be used to separate many other immiscible liquids having different specific gravities. A column of a liquid is supported by vacuum in a vertical column partially submerged in a reservoir containing a first liquid. A mixture of first and second liquids is continuously injected into a separation vessel disposed within the column. Due to their difference in specific gravities, the lighter second fluid will ascend to occupy the upper region of the column while the heavier first fluid will occupy the lower region until equilibrium is achieved. As the mixture continues to enter the system, equilibrium is maintained; the liquids of the upper and lower phases are displaced by equal volumes of incoming liquids.

Abstract: A tank receives raw water for clarification by flotation. An array of lamellae define a set of generally vertically oriented channels with solid side walls. Flotation occurs in each channel. The channels are preferably inclined. With a round tank, a frame rotates an interlocking array of radial and concentric lamellae. A stationary raw water inlet distribution box fills the channels with raw treated water. An aligned clarified water collection box withdraws clarified water. A stationary skimmer directs floating sludge to a removal conduit with a variable pitch screw conveyor. Sliding seals on the lamellae isolate individual channels or groups of channels as they move through the tank. The channels lock and move columns of water through the tank with substantially no turbulence.

Abstract: The invention relates to apparatus for separating constituents of a liquid containing solids, comprising an upflow inlet for a liquid mixture into a central stilling chamber, a pair of separator units having a plurality of baffle plates extending in opposite directions at an upward angle from the stilling chamber, lighter constituent removal means above each separator unit, and a heavier constituent outlet in the stilling chamber.

Abstract: A separator or emulsion breaker for separating the emulsion into a hydrocarbon component which is lighter than an aqueous component and having capability for handling excessive amounts of water, the separator, includes a tank having an emulsion permeable partition forming or flow stabilizer within the tank dividing the latter into an entry chamber and a separating compartment. The emulsion permeable stabilizer receives a turbulent stream of incoming emulsion and discharges the same as a relatively quiescent flow in an upward direction to facilitate separation of the hydrocarbon component from the aqueous component. The solids contained in the emulsion flow downwardly into the sand trap. As the lighter component is raised by the rising water surface, it can be removed through a multi-port discharge opening.

Abstract: An apparatus for purifying fuel, comprising a closed container having a top, a bottom, an inlet for impure fuel and an outlet for purified fuel placed at a level over the inlet, both coupled near the top of the container, a heating bulb to heat the impure fuel and allow the settlement of impurities and a valve in the bottom to remove the impurities from the container; a partition wall coupled in the container above the inlet and under the outlet, and a hollow body dependently coupled to the partition wall, defining a surrounding chamber under the partition wall to receive the impure fuel to the bottom of the container, an inner chamber in the hollow body under the partition wall, for purifying fuel, and an upper chamber over the partition wall for purified fuel; and a passage in the partition wall communicating said inner and upper chambers, to allow passage of the purified fuel to the upper chamber.

Abstract: A grease separation system includes a main grease separator tank [11] which has a plurality of filters [23] suspended along the upper portion of the tank above a bed of grease absorbing material [28]. A perforated pipe [31] extends the length of the floor of the tank and discharges into a grease trap [33]. An admixing tank [52] is also included for admixing a grease absorbing material [60] with the grease [24] collected within the filters and rendering the grease bladeable for disposal into a landfill.

Abstract: A baffle system for use in a clarifier tank having a tank bottom, a periphery and a substantially vertical peripheral wall bounding the interior of the tank is formed by a plurality of individual and cooperatively-engageable baffles mounted on the peripheral tank wall. Each baffle includes a panel member that downwardly slopes from the peripheral tank wall toward the interior of the tank and the tank bottom and terminates at a lower ledge disposed in space relation above the tank bottom. A first lateral end of the panel member unitarily carries an end bracket securable to the peripheral wall for supporting the panel member in a cantilevered fashion. The plural baffles are disposed in end-to-end relation about the peripheral tank wall such that the second lateral end of the panel member of each baffle is secured to the end bracket of the next-adjacent baffle whereby each end bracket supports the panel members of each set of two immediately-adjacent baffles on the peripheral wall.

Abstract: A paint sludge separator tank includes a sludge drain formed on an upper end of a reservoir region for discharging paint sludge floating on a surface of stored liquid, and a liquid feeder for feeding paint-containing liquid to an upper position of the reservoir region horizontally spaced from the sludge drain. The liquid feeder includes a feed hopper defining a sectional passage area progressively enlarging toward an upper delivery opening thereof communicating with the upper position of the reservoir region. The feed hopper has a liquid supply passage connected to a lower position thereof.

Abstract: A particle separator apparatus includes a pond and a separation vault, which receive a runoff stream. The vault includes an entrance for the runoff stream, the entrance having a primary skimmer thereabout for removing floating objects from the stream. A holding chamber is provided for catching and holding particulate matter as the particulate matter drops out of the runoff stream. The holding chamber includes a plate module, having plural corrugated plates spaced apart from one another therein, for providing the aerobic and anaerobic treatment to stabilize the runoff stream. A final skimmer is located at the rear of the vault, and includes a final skimmer plate which directs floating objects to a floating hose, which removes any remaining floating objects from the runoff stream.