Abstract: Methods for bioremediation of contaminants in water using soapstock, an acid oil of soapstock, a neutralized acid oil of soapstock or combinations thereof are described. Systems for bioremediation are also disclosed.

Abstract: A bioretention system and method are provided for removing phosphorus, nitrogen and other materials from effluent such as wastewater and stormwater. The system and method can include a filtration media comprising water treatment residuals and other fill such as soil. Plants can be growing in the soil. The system can also include a drainage system to regulate outflow, to function during both low and high throughputs of water.

Abstract: A screen cleaning apparatus for use, for example, in connection with a discharge conduit of a sewage pumping station, may include a housing, a screen, a rake and a float. The housing may operate to contain a fluid (and/or define a container for the other components) and include a fluid inlet and a fluid outlet. The screen may be positioned in the housing and define one or more apertures. The rake may also be positioned in the housing and have one or more protrusions, with each protrusion extending into a respective aperture in the screen. The float may apply a force to the rake so that the rake moves relative to the screen and in dependence upon variations of a volume of fluid received in the housing. Accordingly, the rake may rise and fall will the fluid level to remove debris from the screen.

Abstract: A fluid strainer device is disclosed. The device includes a housing which defines an open chamber, the chamber having both at least one fluid input port and at least one fluid outlet port. A plurality of spaced strainer baskets are disposed within the chamber. Each basket has a pair of spaced perforated side panels, a perforated rear panel, a perforated top panel and an open front portion in fluid communication with the chamber fluid input port. Finally, each strainer basket is aligned within the chamber for fluid flow from the chamber input port into the basket's open front portion and out through the perforations thereof to filter debris from the fluid while preventing substantial fluid pressure drop between the input and outlet ports substantially independent of debris buildup within the basket.

Abstract: The present invention is for a self-cleaning filter basket for an overflow structure for a retention pond or storm water system. The filter basket is attached to the overflow structure over the outlet weir so that floating debris, such as trash, leaves, glass clippings, tree stems, and the like, is captured by the filter basket while sand, gravel and non-floating materials pass through the filter screen. The self-cleaning filter basket screens are cleaned by water, such as rain water, being directed through openings in the top of the filter basket to impinge against the angled screen sides in the filter basket to flush accumulated debris therefrom.

Abstract: A multi-chamber basin is sized to collect excess waste water exceeding the processing capacity of a sewage system. In order to disinfect the waste water exceeding the basin capacity, disinfectant is added at a point in the system after the first basin. After the rain event is over and there is excess sewage treatment capacity, the sewage treatment in the multi-chamber basin is returned to the sewage system. By not disinfecting the waste water in the first basin chamber, the overall disinfectant usage can be minimized.

Abstract: A floatable skimmer apparatus is movably attached in a storm water filter box with a pair of tracks attached in the housing chamber of the filter box. A floatable skimmer has a skimmer panel having floatation members attached to the inlet side of the storm water filter box for raising and lowering the skimmer panel responsive to the rise and fall of storm water in the housing chamber. Storm water is forced under the bottom of the floatable skimmer panel while blocking floatable debris from entering the housing chamber outlet. A floatable hydrocarbon absorbing boom is attached to the skimmer panel and floated independent thereof.

Abstract: The present invention is a storm water filter system for filtering floatable debris and non-floating pollutants from storm water passing through a storm water drain system. The storm water filtering system has a floatable skimmer therein for capturing floatable debris and trash from the storm water and a separate filtration system to filter non-floatable pollutants from water passing therethrough.

Abstract: A wastewater treatment system for treating excess wastewater from a sewer system includes a container having first and second portions adapted to receive excess wastewater from the sewer system, and a generally horizontally oriented screen arrangement disposed in the second portion of the container. The system further includes a treating agent dispenser for introducing a treating agent into the wastewater, and an effluent passage in fluid communication with the second portion of the container. During a sufficient rain event, the wastewater flows from the sewer system into the container, through the screen arrangement, and then into the effluent passage, such that the wastewater flows generally in a first direction through the first portion of the container, then generally in a second direction different than the first direction through the second portion of the container.

Abstract: A filter system for a storm drain having a bottom, side walls, and an outlet formed in the side wall. The filter system includes a main section having an array of openings formed therein for permitting water to flow through the filter. The main section is configured to be mounted adjacent the side wall and aligned with the outlet. In some cases, the bottom of the storm drain includes a depression for feeding water to the outlet. The filter system includes a flexible mesh that extends from the bottom of the main section into the depression for filtering water flowing in the depression. In addition, the filter system includes a mounting structure that enables the main section to be slidably mounted into an operative position and also enables the main section to be removed by slidably moving it from the operative position.

Abstract: A storm water filtration apparatus, at the curb inlet for a storm drain, which prevents debris and pollutants from entering the storm drain system. Water passes through the filter at an upward angle. The filter does not require replacing for maintenance, and it continues to allow water to flow into the storm drain system even when the filter is full of trash, leaves, debris, and/or other pollutants.

Abstract: A storm sewer insert for use in a storm water drainage system includes a collection basin that has an upper inlet opening, a lower outlet opening and at least one overflow bypass opening defined therein. A filter assembly is preferably positioned in the lower opening of the collection basin for filtering storm water that is held in the collection basin. Advantageously, adjustable mounting structure is provided for mounting the collection basin to an inlet opening of a storm sewer or catch basin. In addition, a mosquito barrier is preferably provided for reducing mosquito passage through the bypass opening.

Abstract: A storm water catch basin filter having a sampling port such that a real-time sample can be taken of water flowing through the filter without the need to remove the filter, the sampling port being an opening preferably covered by a removable closure member or a self-sealing valve.

Abstract: A system designed to control and filter runoff water in storm drains is presented. Drain water frequently carries trash, organic matter, suspended solids, hydrocarbons, metals, nutrients and bacteria collected from streets and parking lots into a storm drain inlet, which enters storm water drain pipe systems. The present invention supplies a series of baffle boxes inserted in the drain water stream with a final box possessing an upflow filter and a hydrocarbon absorbing boom. The system can also support a storm flow bypass that directs high-flow storm runoff water directly to the outlet to protect the filter system.

Abstract: A stormwater treatment system having a treatment container with two chambers, a treatment chamber and a bypass chamber. The bypass chamber includes an inlet for receiving stormwater. Disposed adjacent the inlet is an overflow tray secured to the walls of the bypass chamber. The tray includes an inlet opening for receiving the stormwater to be treated, and a discharge opening through the baffle wall that separates the two chambers for discharging stormwater that enters at low flow rates. The stormwater to be treated passes through the discharge opening into the treatment chamber where it is treated by the filter media. High flow rates will bypass the treatment chamber by overflowing a dam wall or weir defined by the overflow tray directly into the bypass chamber. Treated water from the treatment chamber passes through an underdrain pipe that enters into the bypass chamber. All water from the bypass chamber exits through pipe openings, preferably on each of three sides of the bypass chamber wall.

Abstract: A watershed runoff treatment device is adapted to be used to convert a single-stage drain inlet vault (catch basin) into a two-stage clarifier in which treatment can be accomplished before discharging the water to further on-site treatment or detention or to storm drain. It includes a flow control box member to be mounted on the interior of the vault covering the discharge pipe(s) so that substantially all water runoff entering the vault must flow therethrough prior to exiting the vault. Floating, disposable hydrocarbon collection pads are deployed inside an open mesh container removably attached and covering the upstream face of the flow control box, as well as below the horizontal filter array described next.

Abstract: A stormwater control system including conveyance, filtration and discharge systems. The conveyance system includes a set of conduits and connections providing a flow path through a compacted soil embankment from an upper inlet to a lower discharge area of an underlying soil infiltration zone. The control system has configurations for transferring stormwater from pervious and impervious surfaces to the soil infiltration zone. The control system optionally includes a media filter device that may be installed within the conveyance system to intercept sediment and other contaminants prior to discharge within the underlying soil infiltration zone.

Abstract: A catch basin configured to filter water by way of a matrix filter and a filter pouch. If the matrix filter should become clogged, a bypass weir provides means of bypassing the matrix filter to prevent the catch basin from clogging.

Abstract: Systems and methods for treating water passing through a catch basin may include first and second filters. In some embodiments, one or both of the filters can have a plurality of regions with different nominal flow rates.

Abstract: A feature of the present invention is it is adaptable to any pre-existing storm catch basin system. Another feature of the present invention is that it permits empirical analysis and verification of the draw down rate. Another feature is the present invention can be adjusted or modified to increase or decrease the rate of draw down after it has been installed to insure regulatory conditions are precisely met without difficulty. Changes in future regulatory draw down rates can be easily implemented. A flow restriction device has an orifice plate, the orifice plate having a frontal surface area A and at least one opening for the passage of fluid of an area Oa, wherein Oa is less than A. The flow restriction device may also employ a screen debris plate, the screen debris plate having a plurality of spaced openings for the passage of fluid; the sum area of the openings being ?Osp wherein ?Osp is greater than Oa.

Abstract: An anaerobic to aerobic sequence enhances biological degradation of many organic pollutants. Exemplary embodiments provide systems and methods for effective treatment of storm-water runoff pollutants such as hydrocarbons, nitrates, phosphorus, and heavy metals using sediment filtration and adsorption, and biochemical processes under bi-phasic bioretention conditions. By integrating these pollution cleanup pro-usages into a single unit, this apparatus optimizes retention time of the runoff through the system and maximizes removal rates of runoff pollutants, resulting in more reliable and efficient treatment mechanism than previous systems.

Abstract: The invention provides a bioretention system comprising one or more chambers and a high flow bypass system with top and bottom weirs for water filtration and storm water flow management. The invention also provides methods that are useful for managing storm water flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems.

Abstract: Stand alone structure for the sole purpose of collecting rainwater. Four radial arms attached to a trunk support a tarp. Rain falling on the tarp falls into four funnels at the four ends of the tarp. These funnels feed into piping and then in turn into a water tank. Water is then accessible from the valve of the tank.

Abstract: A stormwater gully comprises a chamber in which an outlet assembly is installed. The outlet assembly comprises filter units connected to an outlet housing. In use, stormwater can flow from the chamber in an upwards direction through filter units into the outlet housing. The outlet housing has an outlet, which extends from the gully. At high rates of flow, the water level in the chamber will rise until water can flow into the outlet housing through bypass inlets. The bypass inlets are connected to the interior of the housing by siphons defined by arched regions of a top cover. The siphons allow rapid discharge of water until the water level returns below the level of the bypass inlets. A slow drain down feature is provided which enables the chamber and outlet assembly to be drained below the level of the primary inlet.

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: An External Filtering and Absorbing Device for Use in a Local Containment Area contains filter material with a mesh size not less than 50 microns for removing contaminants from ballast or bilge water from a ship or effluent from a storm drain. Examples of contaminants removed are aquatic nonindigenous species such as Fish, Zebra and Quagga Mussels, Asiatic Clam, Aquatic Weeds, Green Crabs, or other suspended particle contaminants. Filtering is accomplished above the ambient water allowing easy visual verification and visual gratification of the efficacy of the filter unlike closed on-board systems. Water and oil permeate the filter and flow into a local containment area where oil is absorbed by absorbent pads held in pockets. The filter is easily removed and can be sent to authorities to demonstrate compliance with environmental standards. Water sampling containers or instruments used with the assembly allow for further compliance monitoring.

Abstract: The Downspout Debris Collector is a water filter (D) located approximately four feet above the ground inside a fifteen inch section of downspout. (A) It is inserted into an eleven inch opening cut into an existing downspout. This filter is a ¼ inch holed wire screen (B) riveted horizontally inside five inches from the bottom of the fifteen inch section. (C) Debris collectors in roof gutters are strainers, called “birdcages” that are located in the gutters where the gutters are jointed with the downspouts. This strainer is accessible only at roof height and cleaning it requires considerable effort. The Downspout Debris Collector being four feet from the ground is easily accessed. To clean it raise it until the bottom portion is free, remove it, turn it upside down, empty the debris and then replace it. This unit ELIMINATES debris from clogging underground pipes saving building foundations and money.

Abstract: Provided is a filter assembly for a bioremediating catch basin. The filter assembly comprises a container having at least one inlet and at least one outlet; a carrier substance, such as a foam, which carries a microorganism capable of digesting hydrocarbons; and optionally an adsorbent material. The filter assembly also optionally has structures for overflow conditions which allow the exit of water, but not floating contaminants from the catch basin. Also provided is a replaceable cartridge for the filter assembly. Also provided is a method for bioremediation of polluted water.

Abstract: A curb inlet filter is force fit into the throat of a curb inlet to filter debris and sediment from storm water entering an inlet. The device has a filter media affixed to the lower portion of a semi-rigid “C” shaped frame with upper retention flange. The shape and upper flange of the device combine to create a secure compression fit into the receiving inlet. The design includes an overflow feature above the extents of the filter media for heavy storm events. The “C” shape of the filter and placement within the throat of the curb inlet encourages sediment and debris to be captured within the device away from pedestrian and vehicular traffic. The device can easily be removed from the curb inlet while retaining the collected sediment and debris. The captured contaminants can be disposed of by emptying the contents in a designated area.

Abstract: Most commercial & residential buildings have rainwater collection systems that consist of leaders and gutters that collect water coming off the roof. These leaders and gutters are connected to drain pipes that channel the water away from the structure, usually into a dry well or storm drain. A substantial add-on to the leader and gutter system is a debris trap with an overflow port. The debris trap/overflow port may be attached to the leader at waist height (for easy access) to collect leaves, tree droppings, windblown litter and other materials. This debris can be easily discarded by opening an access panel to empty a built-in strainer. When a dry well or storm drain becomes saturated, water will back up through the leader causing seepage and overflow into the building and create erosion that can damage the foundation. The function of the overflow port is to divert water from the drain pipe away from the foundation.

Abstract: The invention is a particle and sediment filter for stormwater. A long permeable filter bag is laid out horizontally within an enclosure. The bag is formed of at least two layers of parallel tubes that give each layer the pleated look of a typical air mattress. Stormwater is collected from the filter bag by perforated pipes held within the creases between the tubes of the layers of the bag, with the pipes draining to the outside of the enclosure. The bag is also supported above the bottom of the enclosure by additional perforated pipes located within the creases between the tubes, thus allowing the filtered liquid to also drain off beneath the bag. The stormwater input is from a pipe that feeds a manifold formed in the bag and connected to each tube. The top of the enclosure is removable for replacing the filter. The filter bags are constructed of flexible material so that they are flat during initial transport and installation, but they expand as they are filled with liquid and solid material.

Abstract: A system and related method for separating floating and nonfloating particulate and entrained, suspended, and/or dissolved contaminants from a fluid. The system includes a tank with a lower chamber spaced from an outlet or upper chamber by a confinement deck. The deck includes one or more sockets for receiving one or more filter units for fluid treatment. In addition, the lower chamber of the tank acts as a pretreatment sump to remove floating and nonfloating particulates, thereby reducing the load on the filter units. The filter units are configured for radial and/or upward flow of the fluid from the lower chamber. The filter units may include one or more filter media through which the fluid pass prior to exiting the tank. The filter units include a removable screening retainer for retaining the filter media and/or to screen relatively large contaminants. The filter unit may be removed for ease of tank maintenance and replacement of filter media.

Abstract: Three flow paths within a single container are provided for the separation of contaminates, such as floating debris, heavy trash, lighter fluids and heavier fluids, from an effluent stream. A first flow path is provided for low flow conditions wherein the effluent stream pools in a first chamber within the container and the surface of the pooled fluid is drawn off, leaving heavy contaminates within the first chamber. The drawn fluid, with lighter and/or floating contaminates, enters a second chamber. The fluid is drawn from the second chamber below the surface level of the fluid, leaving the lighter and floating contaminates within the second chamber. In moderate flow conditions, a second flow path is established from the first chamber and out the container, bypassing the second chamber. Fluid for the second flow path is drawn from below the surface of the fluid in the first chamber to exclude light and floating contaminates.

Abstract: A stormwater control system including conveyance, filtration and discharge systems. The conveyance system includes a set of conduits and connections providing a flow path through a compacted soil embankment from an upper inlet to a lower discharge area of an underlying soil infiltration zone. The control system has configurations for transferring stormwater from pervious and impervious surfaces to the soil infiltration zone. The control system optionally includes a media filter device that may be installed within the conveyance system to intercept sediment and other contaminants prior to discharge within the underlying soil infiltration zone.

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 rainwater catchment system uses a basket-like strainer removably received within an opening formed in a lid of a conventional container, such as a 55-gallon plastic drum. The strainer includes an upper flange or rim, a side wall, and a bottom with a reinforcing web and a mesh. When the container is placed so that a downspout from a roof is directed toward the strainer, the water that flows out of the downspout flows into the strainer, through the mesh, and into the container where it is collected for future use. The removability of the strainer facilitates cleaning of the mesh. The reinforcing web, preferably with radially directed spokes, which may be curved to define a fan blade shape, helps to support the mesh so to better accommodate high volume water flow while also filtering out unwanted debris. This catchment system can be easy made out of a conventional container, such as a 55-gallon plastic drum, or a 35-gallon garbage can, by forming the hole within the conventional lid.

Abstract: A device and method for filtering storm water entering a street curb inlet drain using a series of expandable brackets to deploy and seal a filter medium completely inside a street curb inlet drain.

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: 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: Certain example embodiments of this invention relate to techniques for collecting run-off and/or draining water from commercial or residential sites, filtering out the liquid, and using the filtered liquid to engage one or more turbines to generate electricity. In certain example embodiments, the one or more turbines are located downstream of filtration, grease-collection, and/or other purification devices. The electricity generated by the one or more turbines may be stored in batteries, serve as a power source for an active drainage/filtration system, used for other activities in or around the site, etc. In certain example embodiments, elements (such as sidewalls, vanes, and/or the like) may be provided upstream of the at least one turbine and downstream of the filtration subsystem, with adjacent elements defining constriction locations therebetween to help accelerate the flow of fluids passing therethrough.

Abstract: An apparatus for reducing pollution in wastewater that collects in a catch basin is disclosed. The apparatus includes a hood affixed to an interior wall of a catch basin over an outlet, and a skirted boom adjacent to at least a portion of said hood and fixed relative to the hood. The skirted boom includes an upper portion and a skirt extending down from the upper portion. The skirted boom is installed so that the upper portion of the skirted boom is adjacent to said hood at the static water level in the catch basin and the skirt extends downward, preferably below the bottom of the hood. A tether assembly for installing the apparatus and a method of using the same is further disclosed.

Abstract: A temporary storm water drainage control member having a first portion including a series of flow control openings formed therein, and a second portion defining a side wall, is releasably mountable over or within the open end of a storm water pipe system. The side wall of the second portion of the drainage control member engages the storm water pipe in a frictionally engaging fit to mount the drainage control member over or within the opening of the storm water pipe.

Abstract: A debris cage is disclosed. The debris cage may include multiple panels, each having a plurality of opening. Each of the panels may be fastened together to form an enclosed structure having a substantially cylindrical portion integral with a conical or dome-like portion at a terminating end of the enclosed structure. Each of the panels may have various shaped openings facilitating the flow of fluid while potentially impeding debris from passing through the debris cage.

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 pond receives a flow of contaminated water into the pond substantially tangential to a volume of clarified water which is stored in the pond and which is largely quiescent. The tangential inflow overcomes a large rotational inertia in the stored volume of clarified water and establishes a slow spiral flow path about the periphery of the pond and inwards to a central outlet. The clarified stored water is discharged ahead of the inflowing contaminated water increasing the residence time of the contaminated water in the pond and permitting contaminants to receive at least partial treatment, such as settling of sediment, in the pond.

Abstract: A stormwater filtration system includes a stormwater containment structure including a bottom surface, an inlet that receives stormwater and an outlet through which filtered stormwater exits the stormwater containment structure. A flow structure is at the bottom surface. The flow structure includes a conveyance conduit running along the bottom surface of the stormwater containment structure and in fluid communication with the outlet of the stormwater containment structure. The conveyance conduit includes a port extending through a sidewall of the conveyance conduit. A saddle includes an upper component and a lower component connected to the upper component such that the upper and lower components straddle the conveyance conduit at the port. The upper component includes an opening in communication with the port and the lower component supports the conveyance conduit above the bottom surface.

Abstract: A storm sewer insert includes a mounting assembly that is constructed and arranged to be mounted to a storm sewer system and a filter bag that is fabricated from a mesh material. The filter bag is releasably attached to the mounting assembly by a plurality of suspension elements that suspend the filter bag from the mounting assembly. The storm sewer insert may be provided with a covered bypass system for permitting excess storm water to bypass the filter bag in a manner that will facilitate the capture of floatable material that may be contained within the excess storm water.

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: A stormwater treatment system, including a treatment container for treating stormwater through a bioretention mechanism. The treatment chamber includes an overflow/bypass system, including a flow distribution tray or flume that includes a distribution compartment or channel, an overflow dam or weir, and an overflow/bypass compartment. The stormwater distribution compartment or channel includes one or more openings for stormwater to be treated to fall onto the filter media located within the treatment container. When high flow rates are obtained that exceed the capacity of the unit, the overflow/bypass stormwater enters the overflow/bypass compartment where it is received by an overflow/bypass outlet pipe to be directed out of the container without such water being treated or further treated by the filter media.

Abstract: A device for preventing sedimentation by regulating the flow of waste water through drain draining-wells, with or without a pump. The device has of a swirl chamber with connected outlet pipe and provided with an air injector. The swirl chamber which is tapered, generates a vortex flow in which the air added by the air injector gives the sludge particles a certain amount of buoyancy, making it easier for them to accompany the water flow without being precipitated.