WATERTECTONICS

ecoStorm® technology is designed for the separation of floating pollutants, litter and contaminated gross particulates from stormwater drainage. It is an affordable solution for meeting pollutant removal regulations in a variety of industrial, commercial and residential applications.

General Information

ecoStorm® consists of 2 circular concentric precast structures: An outer structure forms the swirl-chamber/vortex separator, the inner cylinder serves as a floatables collection chamber and outlet chamber. Swirl-chamber technology combined with vortex design principles, effectively treat the stormwater by removing and retaining sediments and floatables from site runoff.
See why ecoStorm® is the most cost effective BMP for meeting stormwater regulatory requirements.

Cost competitive - single structure design reduces footprint and excavation costs
Low maintenance costs - quick and easy access for inspection and contaminant removal
Easy installation - encompassed design comes pre-assembled to construction site
Standard precast units with treatment capacities up to 28 cfs
Engineered solution - individual units are customized for each specific project

Phase 1: Dry weather level

The ecoStorm® utilizes two concentric round structures of varying diameters. Water levels in the inner and outer cylinder are always equalized through a vertical weir opening. The outer cylinder is designed to separate the contaminated particulate (brown) from the drain water. The Inlet pipe with a deflection bend 90 degrees, initiates the counterclockwise, circular flow direction of the stormwater passing through the system. Circular flow patterns extend or increase the time in which it takes for stormwater flow to enter the weir opening and proceed to the equalization chamber. Floating pollutants (red) such as petroleum, litter and organics are pushed through the weir into the floatable containment chamber (inner cylinder).

Phase 2: Routine storm event

The routine storm event is a rainfall that generates enough energy to transport liquid pollutants, liter and the small, contaminated particles equal to or less than light sand to the storm drain inlets. Once in the storm drainage system, the pollutants are conveyed or delivered to the inlet of the ecoStorm®. The system, when sized, will on average, introduce the stormwater at a flowrate that will allow enough detention time in the apparatus to achieve separation for both floating and settling contaminants. During a low flow event the system will display two separate liquid levels. The liquid level differential is a design function or intent of the weir by restricting flow into the equalization chamber.

Phase 3: Intensifying storm

As storms generate additional intensity, the increased energy allows the stormwater runoff to transport larger, heavier materials with settling velocities that allow separation time to decrease as flowrate increases. Typically any floating pollutants and debris were conveyed at routine storm flow. The captured floating pollutants / debris rise with the internal liquid level.

Phase 4: Design storm

The "design storm" is a rainfall event that when achieved, has prior to or already flushed or delivered the pollutant load to the ecoStorm®. Therefore the separated target pollutants are now segregated from the stormwater energy or flowrates associated with the theoretical assumption that the rainwater through the apparatus now carries little or no target pollutant.

Phase 5: Peak storm

The peak storm design stage produces the maximum flowrate or stormwater volume each system is hydraulically calibrated or sized to handle or pass. Individual project site and the hydraulic sizing enables an accurately predict the highest liquid level within the apparatus. Pollutants that were introduced and separated at lower storm flows are maintained within the apparatus. The internal flow controls and flow patterns that previously separated now prevents re-suspension and discharge of what the apparatus has accumulated in target pollutants.

Phase 6: Dry weather pump-out

The frequency of pump-out is based on the site loading, periodic monitoring and measurements of captured pollutant levels in the sediment and floatable