Vertical flow constructed wetland, treating domestic wastewater from 2 streets in the rural area around Aalter, Belgium

Aerated wetland for a hotel in Antwerp, Belgium

Metz –park of the Seille : collecting and treating stormwater from an adjacent new housing development area inside a 20 ha urban park  and renaturation of the river Seille, flowing along the park.



In 2001, IRIDRA managed the design of a constructed wetlands system for the wine-producing firm “Tenuta dell’Ornellaia”, Leghorn, Italy. The system consists of vertical flow constructed wetlands (SFS-v) as a first stage followed by a second SFS-h stage with recirculation to the first stage and then by a single FWS. It treats wastewater from the firm, which allows water to be reused for irrigation

Septage treatment plant of Nègrepelisse with reed bed filters and reuse of the treated leachates to irrigate a Short Rotation Coppice. Capacity : 3500 septic tanks or 11000 m3/year equivalent to 131 T of SS/year. Designed and built by Epur Natur.

Client: Northumbrian Water
Location: Hanningfield, UK
Established: 2012
Project period: 2010-2012
Number of basins: 16
Sludge type: Water works sludge
Sludge production: 1,275 tonnes DS/year
PE, amount: 1.5 - 2.0 million
Construction costs: approxiamtely 6 million £

Two vertical flow wetlands. One is a circulation system treating the pond water. The other treats the wastewater from the outside toilets

A vertical flow reed bed (French system) and a vegetated polishing zone (surface flow wetland)  treating 117m3/d of domestic effluent from a village with variable population

Client: Skövde Municipality
Location: Skövde, Sweden
Established: 2003
Number of basins: 10
Sludge type: Activated sludge and digested sludge
Sludge volume: 1,200 Tonnes DS/year
PE, amount: 50,000

Treatment of aerobically stabilized sewage sludge from an activated sludge plant (“extended aeration”) – 13 000 p.e.