Passive Stormwater Treatment

The EcoStorm & EcoStorm Plus Systems

The EcoStorm is a gravity separation stormwater treatment system. The system utilizes two concentric circular structures of varying diameters. Water levels within the inner and outer cylinders are equalized through a vertical weir opening. The outer cylinder separates contaminated particulate from the influent. A deflection plate promotes swirling motion in the structure, increasing the travel path for pollutants between the inlet and outlet, thereby providing more time for gravity separation of settleable solids. Floating pollutants such as petroleum and litter are retained in the structure via the skimming outlet pipe. The EcoStorm Plus is a stormwater treatment system that utilizes both gravity separation and upflow adsorptive filtration. A cyclonic separator and porous concrete filter remove pollutants through sedimentation, adsorption, and chemical precipitation.

Technology Specifications

EcoStorm: Sizing from 300 to 900gpm, Concrete Construction
EcoStorm Plus: 180gpm Per Unit, Concrete Construction

Treatment Advantages

Cost-competitive single structure design reduces footprint and allows for easy system expansion and scalability
Engineered units are designed for each project and come delivered in easy to assemble sectional precast forms
EcoStorm Plus filtration system can be backwashed with vactor truck to extend filter life and reduce filter replacement costs
No open vaults or confined space entry required for maintenance