Abstract: A water separation system includes a flow container includes a water inlet pipe; an inlet chamber in fluid communication with the water inlet pipe; a first settling chamber configured to settle grit and to float oil; an elevated, horizontally-oriented, elongate-rectangular water treatment flow inlet leading from the inlet chamber to the first settling chamber; a second settling chamber configured to settle solids; one or more plug flow conduits leading from the first settling chamber to the second settling chamber; an outlet chamber; an elevated treatment flow outlet disposed between the second settling chamber and the outlet chamber; a water outlet pipe in fluid communication with the outlet chamber; and an overflow mechanism disposed between the inlet chamber and the outlet chamber.

Abstract: A flow limiting inlet structure is designed to collect water or other fluids in a pool above grade, and to provide improved capture of sediments and surface pollutants such as oils and greases in the pool, while regulating the flow of water or other fluids during discharge into an outlet pipe. In a conventional storm water detention basin a vertical cylindrical discharge structure can be used to regulate the basin water depth and discharge flow rate of storm water out of the detention basin, in conjunction with the use of a specially designed baffle system that prevents the release of any greases or oils floating on the water surface while capturing any floating trash or debris.

Abstract: An input chamber receives runoff water to be cleaned. Part of the way up the chamber wall is a restricted outlet which feeds a system for cleaning the water. At a still higher elevation another opening allows runoff water to flow to another cleaning system. Near the top of the chamber is an outlet pipe. A vertical baffle in front of the outlet cleans water that flows under the baffle on its way to the outlet. When the incoming flow rate is very high, water passes over the baffle to the outlet.

Abstract: An input chamber receives runoff water to be cleaned. Part of the way up the chamber wall is a restricted outlet which feeds a system for cleaning the water. At a still higher elevation another opening allows runoff water to flow to an extended detention chamber. Near the top of the chamber is an outlet pipe. A vertical baffle in front of the outlet cleans water that flows under the baffle on its way to the outlet. When the incoming flow rate is very high, water passes over the baffle to the outlet.

Abstract: A storm water filter box has a floatable skimmer apparatus for preventing floatable debris from entering the filter box outlet. The filter box has an inlet and an outlet and an inlet filter located in the filter box housing. A portable skimmer is positioned in the box between the inlet and outlet and will rise and fall with the water level in the filter box to keep the top of the skimmer above the water level and force the storm water passing through the filter box under the floatable skimmer thereby blocking floatable debris from entering the filter box outlet.

Abstract: A modularized underground liquid run-off filtration system, where a plurality of matingly engaged panels define a storage chamber, a filter chamber and a clear well chamber. The filter chamber includes a first filter chamber section and a second filter chamber section, the first filter chamber section being in fluid communication with the storage chamber. A filter mechanism is positioned within the second filter chamber section for filtering liquid passing from the storage chamber thereto. The clear well chamber is in fluid communication with the second filter chamber section for receiving filtered liquid.

Abstract: To provide an apparatus for treating oil- and fat-containing wastewater for the purpose of degrading and treating oils and fats within a grease trap, which has the advantages from the viewpoint of a high versatility, and also from the viewpoints of cost and maintenance, and a method of treating oil- and fat-containing wastewater, which efficiently degrades and treats oils and fats within the grease trap.

Abstract: A separator for separating F.O.G. from an effluent that contains F.O.G. includes a tank, an inlet to the tank for receiving effluent that contains F.O.G., and an outlet to allow grey water to leave the tank. The tank has a size to enable stratification of a layer of F.O.G. present in the tank on water in the tank, and first and second thermocouples are positioned at differing levels in the tank. Conductors couple the thermocouples to sensors, and differing voltages in the thermocouples can be sensed to determine if the thermocouples are surrounded by F.O.G. or water.

Abstract: Systems and methods are described for separating components of aqueous mixtures, including aqueous solutions and suspensions. In one implementation, an apparatus flows the aqueous mixture over a hydrophilic surface to form a first region of purified water and a second region of at least one concentrated non-aqueous component. The apparatus can draw off either the purified water or the concentrated non-aqueous components. In one implementation, an array of tubules performs the differential extraction. In another implementation, various hydrophilic and/or hydrophobic surfaces are disposed in multiple differential extractors and some effluents may be recycled to perform complex assaying and separation. In a further implementation, an apparatus can draw off purified water just beneath the air-water interface.

Abstract: A refuse/oil removing device and a refuse/oil recovery bag are provided which can remove refuse and oil contained in drainage discharged from a restaurant in a simple manner without contact with the refuse and oil. A support base of a support unit is disposed in the interior of a grease trap at a position higher than the water level. A recovery bag is attached to the support unit and plural layers of bag portions of the recovery bag are put on the support base. The bag portions are each formed of a material which permits the adhesion of oil thereto and a large number of water passing holes are formed in each of the bag portions. Drainage is introduced inside the innermost one of the plural layers of bag portions and is passed through the bag portions, allowing refuse and oil to adhere to the bag portions. In this way, the job of replacing the recovery bag can be simplified and the amount of oil accumulated within the grease trap can be decreased.

Abstract: A gas-liquid separation system and a method thereof are disclosed. The said system comprises a gas-liquid separation conduit and a drain pipe. The drain pipe is curled and one side of the drain pipe connects to the gas-liquid separation conduit and the other side connects to a sewage pipe. According to the U-Tube principle, the gas and the liquid which both are exhausted by a machinery can be separated in the said system and therefore the said system can prevent related processes causing exhaust piping jam.

Abstract: Systems and methods are described for separating components of aqueous mixtures, including aqueous solutions and suspensions. In one implementation, an apparatus flows the aqueous mixture over a hydrophilic surface to form a first region of purified water and a second region of at least one concentrated non-aqueous component. The apparatus can draw off either the purified water or the concentrated non-aqueous components. In one implementation, an array of tubules performs the differential extraction. In another implementation, various hydrophilic and/or hydrophobic surfaces are disposed in multiple differential extractors and some effluents may be recycled to perform complex assaying and separation.

Abstract: A water separation system includes a flow container includes a water inlet pipe; an inlet chamber in fluid communication with the water inlet pipe; a first settling chamber configured to settle grit and to float oil; an elevated, horizontally-oriented, elongate-rectangular water treatment flow inlet leading from the inlet chamber to the first settling chamber; a second settling chamber configured to settle solids; one or more plug flow conduits leading from the first settling chamber to the second settling chamber; an outlet chamber; an elevated treatment flow outlet disposed between the second settling chamber and the outlet chamber; a water outlet pipe in fluid communication with the outlet chamber; and an overflow mechanism disposed between the inlet chamber and the outlet chamber.

Abstract: A hood for mounting over an outlet in a wall of a catch basin is disclosed. The hood includes a hood wall that forms a prow in a horizontal plane. The prow extends along an axis of the hood thereby achieving optimal flow conditions in the catch basin. In some embodiments the hood wall is shaped to be at least partially sealably mounted to the interior wall of a catch basin have a circular cross section in a horizontal plane. This novel hood shape facilitates installation of the hood in the circular catch basin, while also reducing the flow of oil and other pollutants into the outlet pipe in the circular catch basin. In some embodiments a perforated screed is also disclosed that surrounds the hood to aid in the capture of floatable pollutants.

Abstract: A weir assembly for use with a mixer-settler for liquid-liquid extraction includes in one embodiment an organic weir having an inlet opening below the free surface of the organic phase liquid and a vertically-adjustable front wall allowing adjustments in the position and/or height of the inlet opening. The organic weir can also feature an angled bottom coupled to a lip segment, an incline plate in the interior of the weir, and a front wall that is angled with respect to incoming fluid flow. In another embodiment the weir assembly can independently or additionally include an aqueous weir with a labyrinth section. The aqueous weir can optionally include an adjustable lip hingedly coupled to the top of the final partition in the labyrinth section.

Abstract: A system for separating suspended and dissolved materials in a fluid having a pH offset from neutral is disclosed. It employs a plurality of stacked, generally flat treatment beds each having a surface angled downward for receiving the fluid. Since the fluid is spread over a large surface, its velocity slows causing suspended materials to drop out of the fluid as a sludge. A pH correction device may add an agent to the flowing fluid which will bring the pH closer to neutral thereby causing said dissolved materials to precipitate out and into the sludge. Atmospheric oxygen may also be used to effect the precipitation. Portions of the beds may be isolated and the sludge collected resulting in a fluid having substantially less suspended and dissolved materials at a pH and temperature closer to normal. Energy may be produced from the movement of liquid through the system or from the heat energy of the fluid. Magnetics may be utilized to improve the precipitation of solids.

Abstract: The invention relates to a method and equipment with which an organic solution extraction solution is purified from entrainment of aqueous solution and impurities during hydrometallurgical liquid-liquid extraction. The method treats an organic extraction solution, which is loaded with a valuable metal or valuable substance from the aqueous solution. The purpose is to carry out the physical separation of water droplets and the chemical removal of impurities from the organic extraction solution simultaneously.

Abstract: The present invention relates generally to purification and separation of a fluid flow stream, and more particularly, to a separation system including a device for dispersing the fluid flow and separating pollutants there from. The device includes a vertical screen and baffle wall positioned in a fluid flow stream between the inlet and outlet openings of a chamber. The chamber can include a sump for collecting and storing sediment that is separated from the fluid. The present invention also relates to a method of purifying and separating a fluid flow stream.

Abstract: A hydrodynamic treatment device comprises a vessel (2) within which is disposed an inner partition (24). The inner partition (24) divides the interior of the vessel (2) into outer and inner regions (22, 28). Flow enters the vessel (2) through a tangentially oriented inlet (14) and establishes a complex circulating flow within the vessel (2). Settleable solids migrate to the bottom of the vessel (2) and are deposited in a sump (20) through a solids outlet opening (18). Flow enters the inner region (28) through apertures (34) in the inner partition (24), and is discharged through an outlet duct (8). The inner region (28) is closed at its lower end by a frusto-conical, downwardly diverging lower wall (30) which projects outwardly from a central cylindrical wall (26).

Abstract: The present invention provides a method and apparatus for the treatment of waste water, particularly for the treatment and/or reduction of floating pollutants in storm water waste streams. The apparatus of the invention achieves a high containment level of floating pollutants compared to conventional oil/gas traps available for catch basin use. In a preferred embodiment, the device of the invention is a catch basin trap that arrests the flow of pollutants, particularly floating pollutants. The trap is designed and installed in such a manner that a sealed system is created, ensuring that all fluid flow (e.g., storm water discharge) must pass through the trap and cannot bypass the trap due to unreliable trap attachment mechanisms or unsealed joints. Containment of floating pollutants is achieved.

Abstract: Protein skimmers having an upright housing including an open topped body with a manually removable foam collection cup for sealing mounting on the body. The foam collection cups encircle a foam collection duct except for a recessed inspection window for exposing an area of the foam collection duct's exterior surface for enabling an aquarist a generally horizontal line of sight to continuously inspect the foam collection duct's interior. The protein skimmers have a canister-like configuration with a front control panel including a main inlet, a main outlet and at least one aspirating pump for circulating an air/water mixture. The protein skimmers include a disperser for dispersing an incoming flow of organic loaded water peripherally downward into a reaction chamber in a substantially uniform manner. The protein skimmers include a washing mechanism for periodically washing their foam collection ducts without having to remove their foam collection cups.

Abstract: A separator tank for separating and trapping contaminants in rainwater and runoff is disclosed. According to one embodiment of the present invention, the separator tank comprises a container having a bottom wall, side wall, and top wall defining an internal chamber; an insert located inside of the internal chamber, the insert comprising a weir defining an intake area between the weir and the side wall; and a round-edged orifice positioned within the intake area; an inlet conduit for introducing an influent liquid into the intake area; wherein the weir is positioned such that the weir induces the influent liquid to flow in a swirling motion within the intake area. According to another embodiment of the present invention an insert for a separator tank is disclosed. The insert includes a weir defining an intake area for receiving an influent liquid; and a round-edged orifice positioned within the intake area.

Abstract: A passive hydrocarbon containment system for containing hydrocarbons in a fluid comprises a subsea separator dome, an oil pathway in fluid communication with a hydrocarbon collector disposed within the collection dome, and a gas outlet pipe having a discharge height dimensioned and adapted in relation to the height of the oil pathway sufficient to keep a portion of the oil pathway submerged into a fluid such as seawater present in the collection dome interior void. The hydrocarbon containment system can be moored subsea and used to collect oil and gas coming out of the ocean floor. One advantage of the hydrocarbon containment system is that there are no moving parts. A further advantage is that the hydrocarbon containment system requires limited maintenance to pump out the collected oil as needed.

Abstract: A process for decontamination and separation of a contaminated fluid including a first agent, a second agent, and a third agent may include the steps of directing the contaminated fluid to a first tank, substantially separating first agent in a first layer, a second agent in a second layer and a third agent in a third layer in a first tank, generating a vacuum and removing the first agent and the second agent by the vacuum, placing the first agent and the second agent in a second tank, generating a vacuum and removing the first agent and the second agent by the vacuum and placing the first and second agents in a second tank, removing the third agent by a vacuum and placing the third agent in a third tank, separating the first agent and the second agent based upon the gravities of the first and second agents, removing the second agent from the second tank and placing the second agent in the first tank based upon and until the first agent is detected.

Abstract: A solids collector for collecting solids in waste water that are heavier than water includes a roto-molded plastic container having a cylindrical sidewall and a downwardly sloping bottom. An inlet and outlet are connected to the sidewall substantially above the sloping bottom so that solids that are heavier than water in the waste water coming into the container through the inlet have residence time in the container long enough to gravitationally separate towards the bottom. Waste water depleted of solids that are heavier than water discharge from the container through the outlet.

Abstract: A bioremediation device for liquid waste includes a medium for forming a microbial film and for exposing the microbial film to an effluent to decompose a first substance in the effluent and to produce a second substance from the decomposition of first substance. An aerator is coupled to the medium to supply the microbial film with oxygen and to accelerate the effluent around the microbial film.

Abstract: A flow limiting inlet structure is designed to collect water or other fluids in a pool above grade, and to provide improved capture of sediments and surface pollutants such as oils and greases in the pool, while regulating the flow of water or other fluids during discharge into an outlet pipe. In a conventional storm water detention basin a vertical cylindrical discharge structure can be used to regulate the basin water depth and discharge flow rate of storm water out of the detention basin, in conjunction with the use of a specially designed baffle system that prevents the release of any greases or oils floating on the water surface while capturing any floating trash or debris.

Abstract: A grease trap for separating grease and solid waste from waste water. The grease trap includes a tank having a downwardly shaped bottom. An upwardly shaped divider divides the tank into an upper chamber and a lower chamber. A hole near an upper part of the divider allows waste into the upper chamber. An inlet invert in the tank receives incoming waste water, while an outlet invert removes water from the tank. A lid covers the tank. A pipe extends through the lid, upper chamber, and lower chamber for sucking solid waste out of the lower chamber.

Abstract: An apparatus for purifying polluted water is disclosed, which can naturally remove polluted water stagnated in a treatment tank. The apparatus includes a treatment tank and an infiltration tank. The treatment tank has an inlet at its one side, and first and second outlets at its other side. The treatment tank treats the polluted water that flows through the inlet and discharges the treated polluted water through the first outlet. The infiltration tank is connected to the second outlet and has a plurality of infiltration holes formed on the body thereof. The infiltration tank allows the treated polluted water that flows from the second outlet of the treatment tank to permeate into the ground though the plurality of infiltration holes. Since the polluted water stagnated in the treatment tank can be naturally released, odor due to decay of the polluted water and a subsequent insect infestation can be prevented. In addition, maintenance fees to maintain to the treatment tank can be reduced.

Abstract: Systems and methods are described for separating components of aqueous mixtures, including aqueous solutions and suspensions. In one implementation, an apparatus flows the aqueous mixture over a hydrophilic surface to form a first region of purified water and a second region of at least one concentrated non-aqueous component. The apparatus can draw off either the purified water or the concentrated non-aqueous components. In one implementation, an array of tubules performs the differential extraction. In another implementation, various hydrophilic and/or hydrophobic surfaces are disposed in multiple differential extractors and some effluents may be recycled to perform complex assaying and separation. In a further implementation, an apparatus can draw off purified water just beneath the air-water interface.

Abstract: A treatment apparatus of waste water containing oil and fat for grease trap mounted on a grease trap and for decomposing and treating, with an immobilized enzyme, waste oil and fat waste in waste water containing oil and fat within the grease trap, comprising a support plate mounted on the grease trap, an immobilized enzyme holders containing an immobilized enzyme E and through which the waste water containing oil and fat can freely pass, and an agitating means for agitating the waste water containing oil and fat, wherein the immobilized enzyme holders and the agitating means are installed on the support plate.

Abstract: A unitary or modular, pre-cast, drive-down pit system suitable for use in a heavy equipment wash installation. The completed pit collects runoff generated by the washing of heavy equipment such as construction, industrial, farming, or road-building equipment. The pre-cast concrete separation unit and separate wall sections have tongue and groove mating ends that facilitate assembling the pit and provide for sealing against leakage of water. The separation unit has up to four chambers: a primary solids collection section; a secondary solids settling chamber; a free oil separating section; and a pump water holding section.

Abstract: An oil-water separation pack includes an upper body having cross-sectional shape narrowing from a bottom to a top. The upper body includes an oil rising region provided in an inside central portion thereof, and an oil-discharging opening provided in a top portion thereof. A lower body disposed beneath the upper body includes a plurality of oblique flow-in ports, which allow an oil-water mixture to flow obliquely into an inside portion thereof and flows of the oil-water mixture to collide with each other and stagnate in the inside portion of the lower body, thereby enabling the oil to float and be separated from water. A coupling unit integrally couples a bottom portion of the upper body with a top portion of the lower body, thereby forming a continuous space extending from the lower body to the upper body. The continuous space allows oil to float therethrough.

Abstract: An interceptor configured to at least partially separate a mixture of a first material and a second material, the first material being a fluid. The interceptor includes a container having a base and a sidewall portion that extends upwardly from the base to at least partially define a separation chamber configured to receive the mixture and to facilitate separation of the first and second materials. The interceptor further includes an inlet aperture and an inlet diffuser. The inlet aperture is configured to provide fluid communication between the separation chamber and an inlet conduit that delivers the mixture to the interceptor. The inlet diffuser is in fluid communication with the inlet aperture and the inlet diffuser includes a body portion located within the separation chamber and an elongated outlet aperture that extends through the body portion to provide fluid communication between the inlet conduit and the separation chamber.

Abstract: The present invention provides a method of installing an environmental control system so as to allow for separate sizing of treatment and bypass capacity while also offering the ability to make or change either treatment or bypass capacities at different times. This is accomplished by containing the treatment and bypass functions in separate chambers, using screen, baffle, or coalescing media pack to further refine effectiveness and capacity of each structure independently. The control structure and interceptor structure may be pre-engineered to a variety of sizes, capacities, or other specifications. This allows simple selection of a specific control structure and a specific interceptor structure from a variety of combinations, eliminating the need for custom engineering for each installation.

Abstract: A separator for stormwater includes a long, U-shaped sediment chamber and an oil chamber.

Abstract: An above ground oil and water separator including a pump to draw potentially contaminated water from a containment area, and to supply a flow of water to an enclosure. An enclosure inlet pipe takes water from the diaphragm pump into the enclosure. A first sub-enclosure is formed within the enclosure by a wall containing a plurality of coalescing spheres. The coalescing spheres are bagged within the first wall and can be removed through an external lid during cleaning and removal of coalesced oil. A heat source contained within an electrical panel heats water and supplies the heated water to the enclosure to prevent freezing within the enclosure.

Abstract: A garnet settling/filtration system for use with a plurality of machine tools such as a water jet cutting machine is described. The garnet settling/filtration system comprises a settling tank, which utilizes a removable, disposable settling weir, which is received therein. The settling weir drops into the settling tank and provides an over-under flow system through which the garnet slurry must travel. As the flow of the slurry travels over and under the incorporated series of baffles, the garnet particulate settles out on the bottom of the liner. Once the liner has reached its maximum holding capacity, a series of incorporated, reinforced removal loops located near the top of the liner allow for the easy and quick removal of the liner and the settled-out particulate from the settling tank. The liner can then be discarded and a new one replaced in a matter of minutes, thereby reducing downtime of the machine.

Abstract: The present invention provides a fat separator device having a container with a spout portion and a cover portion releasably attached to the container. The cover portion including a surface having at least one aperture to allow for passage of a liquid through the cover portion and a plug portion extending down from the surface, the plug portion being operable to releasably cover the spout portion of the container.

Abstract: An interceptor configured to at least partially separate a mixture of a first material and a second material, the first material being a fluid. The interceptor includes a container having a base and a sidewall portion that extends upwardly from the base to at least partially define a separation chamber configured to receive the mixture and to facilitate separation of the first and second materials. The interceptor further includes a cap and an aperture disposed on the sidewall portion configured to provide fluid communication between the separation chamber and a conduit. The cap is removably coupled to the interceptor such that the cap inhibits fluid communication through the aperture. The cap is located within the separation chamber.

Abstract: An interceptor configured to at least partially separate a mixture of a first material and a second material, the first material being a fluid. The interceptor includes a container having a base and a sidewall portion that extends upwardly from the base to at least partially define a separation chamber configured to receive the mixture and to facilitate separation of the first and second materials. The interceptor further includes an inlet aperture and an inlet diffuser. The inlet aperture is configured to provide fluid communication between the separation chamber and an inlet conduit that delivers the mixture to the interceptor. The inlet diffuser is in fluid communication with the inlet aperture and the inlet diffuser includes a body portion located within the separation chamber and an elongated outlet aperture that extends through the body portion to provide fluid communication between the inlet conduit and the separation chamber.

Abstract: 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.

Abstract: Disclosed herein is a vortex separator for separating floating and settling substances from storm-water. The vortex separator of the present invention can separate fine settling substances as well as coarse settling substances, floating substances and oil from storm-water. To achieve the above purpose, the vortex separator of the present invention includes a separation casing, a guide plate, which is provided in the separation casing and supported by a connection plate, and an inlet pipe, which is coupled to the guide plate and extends outside the separation casing, so that the storm-water is drawn into the guide plate through the inlet pipe.

Abstract: An embodiment of the invention includes a trapezoid settler having a longitudinal axis, a base, a first side wall oriented at an angle to the longitudinal axis, a second side wall opposing the first side wall and oriented at an angle to the longitudinal axis, and a coalescence fence connected to the first side wall and the second side wall. The coalescence fence has a first screen, a second screen oriented generally parallel to the first screen, and a media disposed between the first screen and the second screen.

Abstract: A grease trap for separating grease and solid waste from waste water. The grease trap includes a tank having a downwardly shaped bottom. An upwardly shaped divider divides the tank into an upper chamber and a lower chamber. A hole near an upper part of the divider allows waste into the upper chamber. An inlet invert in the tank receives incoming waste water, while an outlet invert removes water from the tank. A lid covers the tank. A pipe extends through the lid, upper chamber, and lower chamber for sucking solid waste out of the lower chamber.

Abstract: The present processing apparatus blocks off such a portion of a flow of a plating solution (17) that is other than a vicinity of a liquid surface, by using a first partition plate (15) whose lower end is in close contact with a bottom of a plating tank (11) and whose upper end is at a position lower than a liquid surface. Therefore, the plating solution (17) flowing at the bottom of the plating tank (11) flows upwards along the first partition plate (15). At this time, heavy foreign substances do not tend to follow such an upward movement of the plating solution (17), and therefore sink and accumulate in a vicinity of the lower end of the first partition plate (15), so as not to flow into a downstream side of the plate. With this arrangement, the present processing apparatus can remove the heavy foreign substances from the plating solution (17) without relying solely on a filter of a circulation pipe (10).

Abstract: A weir assembly for use with a mixer-settler for liquid-liquid extraction includes in one embodiment an organic weir having an inlet opening below the free surface of the organic phase liquid and a vertically-adjustable front wall allowing adjustments in the position and/or height of the inlet opening. The organic weir can also feature an angled bottom coupled to a lip segment, an incline plate in the interior of the weir, and a front wall that is angled with respect to incoming fluid flow. In another embodiment the weir assembly can independently or additionally include an aqueous weir with a labyrinth section. The aqueous weir can optionally include an adjustable lip hingedly coupled to the top of the final partition in the labyrinth section.

Abstract: A storm water interceptor comprises an input conduit connected to a first treatment tank for delivering storm water to the first treatment tank and having an obvert elevation. Also, the interceptor comprises a lower conduit having an invert elevation, a substantially horizontal orifice at a first end connected to the first treatment tank and an exit orifice at an opposite end connected to a second treatment tank, whereby the substantially horizontal orifice at the first end of the lower conduit is below the invert elevation of the lower conduit. The interceptor further comprises an overflow conduit connecting the first treatment tank to the second treatment tank, whereby the overflow conduit is connected to the first treatment tank at a location above the obvert elevation of the input conduit.

Abstract: A water separation unit having an inner housing for storm water collection, separation of oils and debris from the storm water, and discharge of clean water. The inner housing is suspended inside an outer housing. The inner housing has a translatable floor with a plurality of hollow tubes extending upward from the floor and downward through the floor for passage of clean water from the inner housing and out the water separation unit. A plurality of conduits collect the clean water as it escapes from the inner housing and carries the clean water to a discharge tube and out the water separation unit.

Abstract: An apparatus and method for separating oil and particulate contaminants from pump-driven aqueous fluid contaminated with emulsified oils, free oils, particulate matter, suspended solids, and other contaminants in which the contaminated fluids are introduced into a container having a horizontal bottom portion and a weir plate dividing the container into an upper clean fluid compartment and a lower separation compartment, an aperture for the outflow of clean fluid from the upper clean fluid compartment sized relative to the pumping rate of the pump driving the aqueous fluid to ensure a residence time of the contaminated fluid in the lower separation compartment of at least about 0.4 minutes, coalescing media comprising a plurality of abutting polypropylene spheres located in the lower separation compartment, and a drain receptacle for collecting the contaminated fluid and delivering the contaminated fluid across the weir plate to the lower separation compartment.