Abstract: Utilizing debris basins for stormwater retention.

Abstract: The invention provides structures, methods, and assemblies for processing fluid entering a treatment area. The invention also provides methods, apparatuses, and additional structures that are useful for managing storm water flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems. One or more flow diverter pans are installed at one or more inlets of a treatment area, such as a bioretention treatment area or a storm water retention and detention system. The apparatus comprises a structural framework that can include a pan placed adjacent to an inlet of the treatment area, and internal walls extending upward from the floor of the pan and at least partially framing a bypass opening adjacent to the floor. Inlet and outlet openings of the pan define a primary flow route for fluid passing through the pan and to the surface of the treatment area. Inlet and bypass openings of the pan comprise a secondary flow route for fluid passing through the tray.

Abstract: A storm water treatment system accomplishes low impact development compliant treatment of storm water with filtrate discharged to an underground infiltration structure. The system has an automatic high-flow bypass under gravity flow, even on flat sites, plus automatic standing water drain-down for mosquito control and de-watering of collected solids. This system incorporates unique distributional piping schemes enabling periodic removal of suspended solids from otherwise inaccessible structures.

Abstract: A device for discharging industrial water into a receiving body of water is provided. The device includes a gravity-fed basin having a gravity cylinder, the gravity cylinder includes an inlet opening and an outlet opening, the inlet opening forming an overflow crest. A throttle member connected to a float gauge by means of a guide rod is disposed inside the gravity cylinder and vertical swirl vanes are disposed between the gravity-fed basin and the gravity cylinder.

Abstract: A system for purifying rainfall runoff including a bar screen; a collection and diversion device; a filter channel; a grass ditch; and a water storage tank. The bar screen is disposed around the collection and diversion device for preliminarily filtering the road rainfall runoff. The collection and diversion device collects the road rainfall runoff and diverts early rainfall runoff to the filter channel, after the filter channel is full, later rainfall runoff is directly diverted to the grass ditch through open channels. The grass ditch includes a percolation bed capable of filtering the early and later rainfall runoff. The water storage tank is connected to the grass ditch via a guiding pipe, to receive the rainfall runoff effusing out of the grass ditch. Part of the rainfall runoff received by the water storage is transported to the percolation bed by a return conduit.

Abstract: Some examples includes a flow-through stormwater sump having a bottom and defining an inlet opening, an outlet opening and a top access opening, an inlet conduit coupled to the flow-through stormwater sump at the inlet opening, an outlet conduit coupled to the flow-through stormwater sump at the outlet opening and a flow-path baffle disposed in the stormwater sump, the flow-path baffle being substantially planar and defining a plurality of openings, the flow-path baffle oriented such that a centerline of the inlet conduit intersects a major plane of the baffle at a point and a centerline of the outlet conduit intersects the major plane at a further point, the flow-path baffle disposed in the stormwater sump in a direct impingement inlet flow-path of the inlet conduit and a direct impingement outlet back-flow-path of the outlet conduit.

Abstract: A system for treating water for subsequent consumption by animals. Illustratively, the system includes a wastewater treatment facility configured to treat wastewater effluent from an egg washer for subsequent consumption by egg producing birds. Further illustratively, stormwater run off collected from the facility is treated for subsequent consumption by the birds.

Abstract: A stormwater filter cartridge includes a housing with internal filter medium disposed along a flow path between a water inlet and a filtered water outlet. A solid wall float tube in a drainage space has an open lower end and open upper end and is movable between a lowered position and a raised position. As the housing fills, water level in the housing rises to cause the solid wall float tube to move to the raised position and a negative pressure draws fluid through the filter medium. As water level outside the filter cartridge drops, air enters the housing and causes the solid wall float tube to drop to the lowered position, and filtered water in a fluid reservoir backflows through the filter medium while air enters the housing by passing upward through the solid wall float tube so as to enhance rate of backflow.

Abstract: A water harvesting sports arena system includes a stadium seating area, a playing surface operating as at least a part of a water catchment arrangement, and a water reservoir, which may be a segmented tank, positioned below the playing surface to receive and store water passing through the playing surface. A water discharge arrangement is associated with the water reservoir so that water is dischargeable from the water reservoir for consumption or other uses. The stadium seating area is advantageously impervious to water so as to direct water toward the playing field for capture.

Abstract: Systems and methods are involved with but are not limited to: a freestandable container including one or more wall portions extending at least in part from said perimeter of said one or more floor portions to bound an interior space; said one or more perforated piping portions extending through said interior space and coupled to one or more passageways through one or more of said wall portions; and a plurality of members coupled to said one or more floor portions and extending from said one or more floor portions to distance said one or more exterior surface portions of said one or more floor portions from a horizontally oriented surface when said plurality of members are in contact therewith. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present disclosure.

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 super absorbent polymer material is contacted with an aqueous medium to absorb at least a portion of the aqueous medium. At least portion of the aqueous medium absorbed super absorbent material is subsequently regenerated to release water therefrom and to form a regenerated super absorbent material suitable for the contacting with a second quantity of an aqueous medium. Also disclosed are layered composites including an electrically conductive metal support layer, a layer of super absorbent material disposed thereon, and a layer of a selective semi-permeable material disposed adjacent the layer of the super absorbent material and spaced apart from the electrically conductive metal support layer.

Abstract: An apparatus for filtering polluted water in drainage systems. The apparatus comprising a collection chamber for collecting the water, having a first end, a second end opposite the first end, and two sides between the ends. An inlet is disposed at or near the first end for the water to enter the collection chamber and a filter screen is disposed in the sides through which the water exits the collection chamber. A deflector is disposed at or near the second end of the collection chamber to deflect downwardly the water flowing towards it.

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 self-contained water polishing system includes at least a first containment basin that has an inlet for inflow of water from a collection source and contains calcium carbonate for treatment of water flowing through the system; at least a first polishing basin in communication with the containment basin and that contains at least a first pollutant collection substrate for treatment of water flowing through the system; and a vacuum pumping system in fluid communication with the containment and polishing basins that draws water through the polishing system.

Abstract: A portable fluid treatment apparatus includes a container with an interior wall between the inlet pipe and the outlet pipe which defines a bottom space between the bottom of the wall and the bottom interior surface of the container. A series of collectors in the container direct the flow of the inlet fluid and promote sedimentation from the fluid. The inlet fluid flows under the wall and up to a discharge pipe equipped with a vent. Multiple sedimentation units are connected together in series and mounted on a trailer for transport to a construction site.

Abstract: A horizontal flow water treatment method and wetland biofilter apparatus provides a chamber with impermeable outer walls spaced away from permeable interior walls of a media filtration bed such that a catch basin is formed between the outer walls and the interior walls. The catch basin creates an open area around the perimeter of the interior walls for influent water to fill within the open area on all sides before penetrating the filtration media, providing a large surface area for influent water to interact with the media filtration bed. The influent water enters the catch basin in a horizontal flow path to provide for pre-settling of particulates before making contact with the filtration media. The biofilter design increases the available surface area of the media filtration bed by up to four times for a given volume of water, and thereby minimizes the loading or infiltration rate on the media filtration bed.

Abstract: A self-contained water polishing system includes at least a first containment basin that has an inlet for inflow of water from a collection source and contains calcium carbonate for treatment of water flowing through the system; at least a first polishing basin in communication with the containment basin and that contains at least a first pollutant collection substrate for treatment of water flowing through the system; and a vacuum pumping system in fluid communication with the containment and polishing basins that draws water through the polishing system.

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 treatment system includes water treatment media that defines a helical flow path within a conduit. The water treatment media may include a plurality of helical water treatment media components that are constructed and arranged to seal against an inside surface of the conduit. The individual helical water treatment media components may be installed in situ within the conduit when the conduit is positioned within a chamber having an access opening, and periodically removed and replaced by passing the components to the access opening. The components further may have a flexible frame, which allows the water treatment media to dynamically adjust to swelling of the filtration media and other forces that may occur during use. The performance of the system may be adjusted by adjusting the helical pitch of the helical water treatment media components.

Abstract: The present invention is directed to an assembly and a method of treating rainwater to produce potable water. A compact and easy-to-install apparatus is achievable as a result of a simple, yet highly effective sanitisation method. Rainwater is entrained with a gas, and the entrained rainwater is irradiated with an ultraviolet (UV) light to fully sanitise the rainwater. The UV light is used during the irradiation of the entrained water and is also used to form a gaseous bactericide which is used to entrain the rainwater. None of the disadvantages of the prior art systems apply to any rainwater treatment systems which use this method. All of the connections between the component parts may be already provided for in this rainwater treatment unit, and consequently both installation and maintenance costs will be significantly reduced in comparison to the rainwater treatment systems which are known from the prior art.

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: Devices, apparatus, systems and methods of using baffle boxes with turbulence deflectors and flow spreaders. Turbulence deflectors are added about the inlet port of a baffle box, and a flow spreader is added centrally beneath an outlet port to increase removal efficiency of pollutants and prevent the conveyance of pollutants down stream. The turbulence deflectors and the flow spreader will increase the removal efficiency of particles, especially fine and ultra fine particles without impeding the water flow. The turbulence deflectors will significantly reduce the turbulence within the sediment chambers which will lead to better settling and less re-suspension. The flow spreader spreads the flow wide sooner within the baffle box to reduce the linear velocity of the water current, and directs water flow away from the area of greatest turbulence adjacent to the inflow, and will increase the settling of particles and minimize re-suspension.

Abstract: Some examples includes a flow-through stormwater sump having a bottom and defining an inlet opening, an outlet opening and a top access opening, an inlet conduit coupled to the flow-through stormwater sump at the inlet opening, an outlet conduit coupled to the flow-through stormwater sump at the outlet opening and a flow-path baffle disposed in the stormwater sump, the flow-path baffle being substantially planar and defining a plurality of openings, the flow-path baffle oriented such that a centerline of the inlet conduit intersects a major plane of the baffle at a point and a centerline of the outlet conduit intersects the major plane at a further point, the flow-path baffle disposed in the stormwater sump in a direct impingement inlet flow-path of the inlet conduit and a direct impingement outlet back-flow-path of the outlet conduit.

Abstract: An underground stormwater management system includes a receiving tank connected to a source of non-first flush runoff and a storage chamber that accumulates stormwater runoff for discharge to a storm drain. The storage chamber includes a first inlet connected to a source of first flush runoff, a second inlet connected to receive overflow from the receiving tank, a first discharge and a second discharge above the first discharge. First flush is discharged from the first discharge and is filtered before reaching the storm drain. The receiving tank assists in delaying the receipt of non-first flush runoff into the storage chamber during a major rain event. During major rain events runoff is also discharged from the storage chamber directly to the surrounding media.

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.