A system, methodology, and programming logic for active stormwater controls to optimize sizing and design of Hydromodification Management (HM) structural Best Management Practices (BMPs) to achieve optimal flow duration control. Control logic enables the controlled release of stormwater from a BMP in a manner most akin to pre-development flow duration curves. Inputs to this logic include: flow duration curves based on continuous hydrologic simulation for pre- and post-development conditions; real-time measurement of water level within the BMP; and real-time measurement of discharge entering the BMP. This control logic can interact with control logic for other stormwater management objectives, such as harvest and reuse, infiltration, and combined sewer overflow prevention, and respective inputs, such as real-time weather forecast data, precipitation gage data, downstream flow gauge data, and water quality data, to meet those design objectives as well. New HM BMPs can be optimized to be smaller and, thus, more feasible to implement. Existing stormwater facilities designed for flood control or other management objectives can be retrofitted to provide hydromodification control as well. When utilized with real-time flow and water level monitoring equipment and data, the flow release logic can be adaptively adjusted without physical retrofit of the BMP's outlet.

The present invention relates to a storm water management system comprising a first conduit, a storage device, a first well and a valve, wherein the storage device comprises a coherent man-made vitreous fibre module (MMVF module), wherein the MMVF module comprises an upper passage and a lower passage, wherein the upper passage is in fluid communication with the first conduit, and wherein the lower passage is connected to the first well by the valve.

Systems, methods, and articles of manufacture for automatic backflow identification, detection, remediation, and/or management. In some embodiments, a backflow management device may comprise a threaded and electronically-enabled plug installed in a non-pressurized pipe system cleanout, branch, or stub.

An automated water control device comprises a rotatable housing that can be incrementally positioned to control flow of water over an upper or weir edge of the housing. The device is installed at a control point in an impoundment area, such as a settling pond. The housing is selectively rotated to raise and lower the height of the weir edge to a target gate height. Automatic control is provided for operation of the device by a controller communicating with an actuator. A system of the invention includes one or more water control devices and the controller. A method of the invention includes controlling flow of water from an impounded water source by use of the automated water control device. Manual or semi-automated embodiments are also disclosed.

An application for a flow control system includes a vertically oriented expanding conduit, positioned within the interior of a container which is fluidly interfaced to a downstream drainage system. The lower end of the expanding conduit is in fluid communication with an upstream reservoir through a closed conduit. A means to restrain the expanding conduit from lateral movement is provided and the means is in fluid communication with the interior of the container. The distal, upper end of the expanding conduit is capped and at least one fluid passageway opens through the cap from the interior of the expanding conduit. As the fluid pressure rises in the expanding conduit in response to an increase in the fluid level in the upstream reservoir, the fluid passageway through the capped, upper end of the expanding conduit rises to prescribed level and the release rate of fluid into the downstream drainage system is maintained at a prescribed rate or range of rates as the fluid level continues to rise.

A liquid level control system, which may be used with a clarifier in a sewage treatment plant, manages liquid level of an upstream basin by controlling liquid flow in or out of a system that may use a midstream device to equally distribute flow in or out of the basin. This headloss inducing device creates a non-linear relationship between upstream liquid level to be controlled and the lesser downstream liquid level behind the gate or valve. Without the use of electrical controls, the systems of the invention include a gate or valve with counterforces that manage the outflow stream of liquid while accounting for the non-linear head loss created by the midstream device, thus reaching a desired liquid level range for all system flowrates.

A system, methodology, and programming logic for active stormwater controls to optimize sizing and design of Hydromodification Management (HM) structural Best Management Practices (BMPs) to achieve optimal flow duration control. Control logic enables the controlled release of stormwater from a BMP in a manner most akin to pre-development flow duration curves. Inputs to this logic include: flow duration curves based on continuous hydrologic simulation for pre- and post-development conditions; real-time measurement of water level within the BMP; and real-time measurement of discharge entering the BMP. This control logic can interact with control logic for other stormwater management objectives, such as harvest and reuse, infiltration, and combined sewer overflow prevention, and respective inputs, such as real-time weather forecast data, precipitation gage data, downstream flow gauge data, and water quality data, to meet those design objectives as well. New HM BMPs can be optimized to be smaller and, thus, more feasible to implement. Existing stormwater facilities designed for flood control or other management objectives can be retrofitted to provide hydromodification control as well. When utilized with real-time flow and water level monitoring equipment and data, the flow release logic can be adaptively adjusted without physical retrofit of the BMP's outlet.

A system and method for treating contaminated water are provided. The system can include one or more collecting basins for collecting water, such as rain water, runoff water, etc. The system can further include one or more containment basins, one or more polishing basins, and a pumping system for moving water through the system. The containment basins and polishing basins can utilize techniques for reducing a contaminant concentration in the water. The system can further include a source for adding process water to the system and combining it with the collected water to form a system water in order to reduce a contaminant concentration in the system water and accommodate higher volumes of collected water and/or higher pollutant concentrations therein. The system can also include an ultraviolet emitting device and/or a heating device for reducing the level of living bacteria in the system water.

An application for a flow control system includes a pressure vessel, positioned within the interior of a container which is fluidly interfaced to a downstream drainage system. The pressure vessel has at least one opening through its lower surface, through which it is slideably engaged over the exterior of a closed conduit which is in fluid communication with an upstream reservoir. There is no need for a seal between the pressure vessel and the closed conduit such that the interior of the pressure vessel is in fluid communication with the interior of the container. Additional openings, from the interior of the pressure vessel may also be provided. A means to restrain the pressure vessel from significant lateral movement is provided. As the fluid pressure rises in the pressure vessel in response to an increase in the fluid level in the upstream reservoir, the openings through the pressure vessel rise to prescribed level and the release rate of fluid into the downstream drainage system is maintained at a prescribed rate or range of rates as the fluid level continues to rise.

An example system includes a valve between a suction pipe extending into a sewage pit and a vacuum pipe connected to a sewer system. The vacuum pipe has vacuum pressure. The valve is controllable to open to allow content to flow from the sewage pit, through the suction pipe, and into the vacuum pipe. A sensor is configured to detect the vacuum pressure in the vacuum pipe. The valve is controllable to open for a duration that is based, at least in part, on the vacuum pressure in the vacuum pipe.