41 results about "Stormwater management" patented technology

A stormwater inlet near an upper edge of a layered filter media vessel is equipped with a distribution header that ensures effective use of the surface area of the filter media by providing plural spaced streams of stormwater thereat, each at a point of impact having its energy dissipated by a layer of material that covers the upper layered filter media surface. The stormwater inflow is metered to control the stormwater pollutant removal process kinetics, thereby slowing the mean free path of the stormwater therethrough and optimizing pollutant capture. The water level within the vessel is height adjustable manually by a pivot arm in the form of a standing column of water coupled to the water within the container. Weep conduits are provided to slowly drain down the standing water in the system between storm events, simplifying maintenance and promoting best removal of pollutants from first-flush storm events. Stormwater pretreatment, e.g. by use of an oleophilic agent or a pH-buffering agent, is provided. Filter media are easily cleaned, as by scraping and / or adding filter media material when existing material's particulate capture capacity is exhausted.

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 catch basin retrofit that allows stormwater to be diverted from an existing storm sewer to an alternative stormwater management practice (SMP), while maintaining functionality of the catch basin as an overflow device for the alternative SMP.

A dual sensor sediment monitoring system for stormwater management facilities includes a capacitive sensor and an ultrasonic sensor. The former periodically determines if a liquid layer exists above the sediment and activates the ultrasonic sensor when it does not. The echo delay measured by the ultrasonic sensor is used to calculate the sediment level, which is wirelessly transmitted to a remote computer for database compilation and use in scheduling maintenance involving sediment removal.

Systems and methods in accordance with embodiments of the invention are software models that present information in a format directly usable by stormwater managers to inform annual program decisions and consistently evaluate the effectiveness of stormwater management actions. Stormwater modeling systems in accordance with many embodiments of the invention provide a tool that can be used by stormwater managers to estimate load reductions. In a number of embodiments, a user interface is provided that streamlines user input data requirements. In this way, the stormwater modeling system can extend the utility of event-based model inputs, generate results that inform management decisions, and demonstrate progress using a common scalable unit.

This disclosure relates generally to stormwater management and, more particularly, to a stormwater chamber with a continuous curvature. The stormwater chamber may comprise a chamber body with a chamber wall, an apex, a base, and a first and second opening. The chamber wall may include a continuous curvature from the apex of the chamber body to the first and second openings and a continuous curvature from the apex of the chamber body to the base.

The invention provides structures, methods, and assemblies for bioretention systems, including tree box filters with one or more internal bypass features incorporated into the tree box filter. The invention also provides methods and additional structures that are useful for managing stormwater flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems.