Abstract: In one embodiment, an ice management system is provided for removing an amount of oil from a surface of a body of water. The ice management system includes an ice frame having an ice fence coupled with an ice cage, an oil skimmer device disposed within the ice frame, and an ice deflection assembly coupled with the ice frame. The ice deflection assembly includes an auger coupled with a motor. The auger includes a drum and a deflection mechanism, and the motor is configured to rotate the auger. The deflection mechanism includes a spiral flight or a series of tabs arranged in a corkscrew pattern about the drum. The ice fence includes a plurality of curved vanes. The curved vanes have a bent rectangular plate shape.

Abstract: The present disclosure relates to water environment governance technology, and particularly discloses an urban river/lake water environment multi-interface governance and restoration method. The method is a multi-interface coordinated governance and restoration method based on “control for bottom, regulation for middle and governance for top”, including: “control for bottom”—controlling the emission of sediment nutritive salts and the dormancy and recovery of algae; “regulation for middle”—regulating primary productivity in a water body to inhibit the recovery of the algae; and “governance for top”—reducing nitrogen and phosphorus nutrients of an air-water interface to control the reproduction and growth of the algae. In the present disclosure, the water body governance and restoration technology based on interface coordination can effectively inhibit the outbreak of cyanobacteria and avoid extreme conditions in the ecosystem.

Abstract: Disclosed herein are decanting backwash receiver assemblies, and related methods of fabrication and use. The present disclosure provides improved decanting backwash receiver assemblies for decanting of input feeds, and improved systems/methods for utilizing and fabricating the decanting backwash receiver assemblies. The present disclosure provides decanting backwash receiver assemblies utilizing porous media insert members and/or porous media surfaces for the decanting of input feeds. Exemplary decanting backwash receiver assemblies are configured and dimensioned to receive a filter backwash surge flow of slurry (e.g., solids and liquid mixture), and provide for settling of the solids from flow 11, and provide for decanting of a liquid layer above the settled solids, and optionally provide for de wetting the settled solids, and provide for discharge of the settled solids (e.g., liquid wetted) from the bottom of the assemblies.

Abstract: The present invention provides improved methods for purifying and/or removing oily particles, and/or contaminants suspended or dissolved in water. In particular the process relates to an additive composition that has the appropriate surfactant characteristics for effectively removing an oil phase from an oil/aqueous mixed phase via foam fractionation. According to the invention, a hydrophobically modified polymer that acts as an associative thickener is combined with surfactant in appropriate ratios to facilitate oil removal for water purification in any of a number of commercial, environmental and industrial applications.

Abstract: A launder cover system for reducing or eliminating sunlight exposure so as to prevent algae growth in a tank such as a clarifier tank. The launder cover system generally includes a plurality of support members and a plurality of launder covers which are each independently pivotably connected to a tank wall of a tank, such as by using a mount. The support members are each pivotably connected to the tank wall by a pivot connector and the launder covers are each pivotably connected to the tank wall by a hinge connector. Each support member is positioned between a pair of launder covers, and each launder cover is positioned between a pair of support members. The support members function to support the launder covers in a raised or lowered position. A launder support may be connected to the channel wall to support the launder covers in their lowered positions.

Abstract: An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. In a third aspect, a system comprises a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

Abstract: A stormwater treatment device includes a tank defining an internal volume and having an inlet and an outlet, a rotatable screen unit mounted within the tank, the rotatable screen unit being barrel-shaped to define a through path with an inlet end and an outlet end. The rotatable screen unit includes a screen structure with a plurality of screening openings for allowing passage of at least some water from the through path outwardly through the screen structure while inhibiting passage of trash items through the screen structure such that trash items move along the through path from the inlet end to the outlet end. The rotatable screen unit includes a plurality of external drive paddles that rotate with the screen structure and that interact with water that has been screened by passing outwardly through the screen structure interacts with the external drive paddles to cause rotation of the rotatable screen unit.

Abstract: A through-floor combination tub and surface drain includes an exterior tube having a top end and a bottom end. The bottom end of the exterior tube is to connect to a sewer pipe. The top end of the exterior tube has one or more openings to provide a floor drain. The drain also includes an interior tube situated within the exterior tube. The interior tube has a top end to receive a drain pipe and a bottom end that opens into a cavity within the exterior tube that extends from the top end of the exterior tube to the bottom end of the exterior tube. The drain further includes a flange, extending outward radially from the exterior tube, to connect to a substrate of a floor.

Abstract: Various systems, apparatus, and methods used to remove solids from water are provided. A plate assembly for a plate settler assembly is provided which includes a plate body with a plate body thickness. The plate assembly also includes a first support plate attached to the plate body on a first axis extending between the first and second end of the plate body. The plate assembly may further include a second support plate attached to the plate body on a second axis extending between the first and second end. The plate assembly may also include a stiffener or a central stiffener attached to the plate body on a third axis. The plate assembly may still further include a flow control plate along the first end. The thickness of the support plates, stiffener, and flow control plate are greater than the plate body thickness. A corresponding method of manufacture is provided.

Abstract: A lifting mechanism for a wastewater plant skimmer arm is provided. The device includes a member. A pair of attaching members are each connected to the member via a hinge. The pair of attaching members are parallel from each other. A skimming member is connected to the pair of attaching members, and parallel to the member. A clamp with a pin is mounted to the member. A flat bar is connected to the clamp and pivots about the pin. The flat bar includes a hook and a plurality of notches. A U-bolt placed on the skimming member includes a rod, that may engage with the hook or a notch of the plurality of notches on the flat bar. The hook may lift the skimming member by engaging with the rod. The desired position of the skimming member may be secured by engaging with a notch of the plurality of notches.

Abstract: A connector pipe screen device configured for mounting on a water conduit includes an expandable ring mounting assembly, the expandable ring mounting assembly being configured to be engagable with and securable to the conduit near or at an axial end of the conduit at which a conduit opening is disposed, a back plate mounted on the expandable ring mounting assembly and a front cover mounted on the back plate. The front cover has a perforated portion defining a multiplicity of openings formed therein to allow water to pass through the perforated portion and to prevent debris carried by the water from passing through the perforated portion.

Abstract: A fluid management system including an inlet configured to receive pre-processed fluid is provided. The system includes a filtering apparatus configured to remove contaminants from the pre-processed fluid. The filtering apparatus includes a plate having a first opening. A first manifold pipe is disposed on the plate and includes one or more perforations and a second opening at least partially aligned with the first opening. A second manifold pipe is disposed on the plate and includes one or more perforations. Filter media is disposed between the first manifold pipe and the second manifold pipe and is configured to separate the contaminants from the pre-processed fluid. The system also includes an outlet coupled to the second manifold pipe to receive processed fluid from the filtering apparatus.

Abstract: Coalescer plates, coalescer plate units, and coalescers, are provided. An exemplary embodiment provides a coalescer plate for separating a mixture of immiscible fluids. The coalescer plate comprises a pattern of wetting and non-wetting regions, wherein the pattern is based, at least in part, on phyllotaxis.

Abstract: A storm water capture and filtration system may secure in a catch basin or other area subject to flows of water from streets, channels, and the like as a result of run off from storms. A filter system may include a capture portion including attachment mechanisms, a funnel, various supports, and a filter hanger designed and calculated to capture all water entering a storm water inlet and directing it toward a bag filter. A gap is provided between a funnel and filter hanger in order to provide accommodation for overflow, while an anti-backflow skirt on the filter bag resists flushing of captured pollution out of the bag in overflow condition.

Abstract: The present invention is directed to a clarifier for water treatment including a module. The module includes a planar inclined sheet; a plurality of vertically-oriented supports; and a tensioner. The at least one planar inclined sheet is tensioned between the plurality of vertically-oriented supports and the tensioner is configured to bring the planar inclined sheet to an even centerline.

Abstract: The system for a continuous dewatering recirculating for removing particulate such as coal combustion residue from a water stream. The system includes multiple dewatering and recirculation containers, each having a submerged flight conveyor and lamella settlings plate located therein, at least one dewatering and recirculation container receives ash water stream overflow.

Abstract: A surface containment system to contain liquid contaminates escaping from a vessel, the containment system having in one example: a water and oil impermeable barrier liner positioned below the vessel; a perimeter wall surrounding the vessel, the perimeter wall extending vertically from the ground surface and supporting a portion of the barrier liner so as to form a containment reservoir; at least one fluid conduit through the barrier liner, the fluid conduit having a filter configured to retain contaminates and configured to allow water to pass by way of gravity from the reservoir through the impermeable barrier; the perimeter wall formed of a plurality of wall panels connected by way of struts each having a vertical component, a base component anchored to ground.

Abstract: Methods and systems for removing pollutants from water include one or more filter systems and a hybrid wetland system. Hybrid wetland systems may include a first pipe transporting water from a body of water to a settling tank, a first constructed wetland connected to the settling tank via a second pipe, and a first filter system removing pollutants from water passing through the second pipe. A second filter system is positioned within the first wetland to further remove pollutants. The system also includes a second constructed wetland connected to the first constructed wetland via a third pipe and a water control chamber. Filtered water exiting the first constructed wetland flows through the water control chamber, through the third pipe, and into the second constructed wetland. A fourth pipe extends between the second constructed wetland and the body of water, returning filtered water to the body of water.

Abstract: A separation system for separating components of a flow of multi-phase fluid includes an elongate separator vessel oriented on an incline to define a lower inlet end having an inlet for receiving the fluid flow, a raised outlet end, and an inclined top inner surface extending from the inlet end to the outlet end. The system includes a lower weir plate positioned above the inlet end and an upper weir plate positioned below the outlet end having an upper edge defining a liquid level within the separator vessel, thereby allowing a lighter fluid component to flow over the upper edge into a upper section located forwardly of the upper weir plate. The system also includes a clear water pipe with a withdrawal opening positioned below the upper weir plate. The incline of the separator vessel is adjustable in accordance with the composition of the multi-phase fluid.

Abstract: A conduit assembly for a separation device is described herein. The conduit assembly includes a first conduit segment, a second conduit segment, and a removable flow control insert or cartridge, which may be easily installed and uninstalled without removing other components of the conduit assembly from the separation device. The flow control insert may be installed within a top opening of the second conduit segment and includes a projection that extends into the conduit assembly and obstructs or restricts fluid flow at the juncture between the first and second conduit segments.