Two stage vertical flow wetland with recirculation. The system treats the wastewater from the ecological office building. The treated wastewater is reused for toilet flushing.

Compact reed bed filter to treat raw unsettled domestic sewage (French system). Capacity : 315 people equivalent. Design and build : Epur Nature -2014.

Saint Germain sur Ille : a 500 PE waste stabilization pond boosted to 900 PE by addition of reed bed filters with high standards for phosphorus and total nitrogen removal.

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

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

Peterborough: A 2,570m2 Horizontal sub-surface flow reed bed treating hydrocarbon loaded run-ff with peak flows of 1,420 m3/day.

Mayfield: A 2.1 hectare, 12  bed aerated horizontal system treating airport run off contaminated with glycol based antifreeze.

A ten years old system treating the wastewater produced by a winery in Central Italy. Cecchi is a famous wine producer in Italy and the production is certified ISO14001; all the wastewater produced by the "bottling department", located in Castellina in Chianti, Province of Siena, is appropriately treated before to be discharged in a nearby stream by a multistage constructed wetland.

20 years old French system serving 200 p.e. in the Lyon area

Vertical flow wetland, 75 PE for an ecological housing project in Arnhem, the Netherlands.

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