Stormwater Treatment

Ecotechnic Stormwater Treatment

Environmentally friendly treatment


Stormwater Treatment is vital to maintaining the overall water quality in our communities.

Our stormwater treatment devices are the most cost effective BMP's for meeting stormwater regulatory requirements. With increasing urbanization, the problems of stormwater runoff from impermeable surfaces are becoming more apparent. The key to successful stormwater treatment is the removal of sediments from stormwater-run-off contaminated by heavy metals, hydrocarbons and their floating residuals from paved, impervious sites. Chemical pollutants and heavy metals tend to be associated with the finer particles in stormwater sediments, therefore it is essential to contain these polluted sediments within any removal device. An affordable stormwater filtration system designed to remove sediments, heavy metals and nutrients.

Run-off from trafficable areas and metal roofs contains significant concentrations of heavy metals and other soluble pollutants. Structural stormwater treatment systems are effective in removing sediments, but have tremendous shortcomings in removing solubles like heavy metals and nutrients (phosphates and nitrates).

ecoStorm plus is one of the few available system with full size laboratory and field test results performed by renown European Universities. The ecoStorm plus systems targets on treatment of stormwater to protect watercourses and groundwater in the long run. By the use of special porous concrete filter, cost savings in comparison to conventional systems are significant.

Operating Principle

  1. The rainwater from the area to be drained is introduced at the lower end of the shaft of the rainwater treatment plant, and the water is deflected tangentially by a deflection aid.
  2. Here, sedimentation of particles, especially of the sand fraction, takes place in a hydrodynamic separator due to turbulent secondary flows in a radial, laminar flow regime. In this way, solids are already retained here and the filters are effectively protected against colmation.
  3. These are collected via an opening in the lower part of the cleaning shaft in a sludge trap under the system, the sludge trap is sucked out at intervals.
  4. In the middle of the cleaning shaft there are 4 filter elements, with these filter elements the fines are filtered in the upflow process and a large part of the dissolved pollutants are adsorptively bound, the filter can be backwashed and in case of complete sludge formation it can be easily replaced. The design of the individual filters enables the operator to safely and sustainably maintain the material cycle.
  5. The clean water is located above the filter elements. It passes through a light-matter barrier (in the event of an accident, larger quantities of oil and gasoline are retained (for example, in the event of an accident), "normally" occurring hydrocarbons are removed in the filter) and then flows through the drain into the seepage system or into the body of water.


Approvals and Certificates

  • General building authority approval of the DIBt for infilration Z-84.2-4
  • Tested according to the NRW separation specification, according to LANUV list
  • Approval according to the Bavarian Water Law for metal roof drains
  • Independent In-situ measurement results available from various countries
  • Tested according to the NJDEP protocol
  • Stormwater Treatment with ecoStorm plus

    • Treatment of stormwater runoff from highways, streets and parking lots
    • Removal of heavy metals from metal roof runoff