Ponds and constructed wetlands can be designed purposely for water treatment. These ecotechnologies are bioinspired by the ability of natural wetlands to treat various pollutions, via interactions with substrate, plants and especially the associated microorganisms (phytoremediation). Constructed wetlands are artificial wetlands with water flowing over a bottom made of soil substrate for plant growth (macrophytes).…
Vegetated filters or reed bed are a category of constructed wetlands, as such they display all their benefits. These are wetlands with water flowing through a planted granular substrate. We design and apply the three main categories of vegetated filters, in two treatment steps if required (for categories 1 and 2): Vertical vegetated filters: water…
Developed by Cebedeau (www.cebedeau.be), the FILTRAN® process is a compact vegetated filter for the treatment of organic matter and optimised for the treatment of total nitrogen through nitrification and denitrification. The process combines in one step the advantages of unsaturated vertical filters and saturated horizontal filters. Its additional advantages are: A smaller footprint than conventional…
Phytotreatment processes, inspired by wet meadows and riparian areas, are based on water flowing through plants and / or soil of a dedicated facility. Water treatment results from stem filtration and plant-soil-microorganism interactions at root level and must be completed before infiltration into the subsoil. We can apply phytotreatment in combination with our other ecotechnologies,…
Mycofiltration involves percolating water through a woody substrate colonized by a lignicolous fungi (wood-degrading fungi). The filtering effect of the dense mycelium network and the release of enzymes can remove organic pollutants, heavy metals and pathogenic bacteria from water. Because it is straightforward to implement, this technology it is particularly adapted to the treatment of…
Reactive substrates are based on water percolation through granular materials-filled beds or trenches, causing chemical modifications (example: phosphate capture). The reactions may also involve microorganisms, the substrate being in that case used as a metabolite (example: supply of organic matter for nitrate removal). Better-known applications are reactive barriers for groundwater depollution. We apply reactive substrates…
The sustainable management of stormwater and runoff is based on mimicking the natural water cycle (retention, evaporation, infiltration, etc.) while ensuring its depollution, to prevent flooding, replenish water tables, relieve wastewater sewers and improve the quality of water bodies. For that purpose, we apply both principles of source control and treatment train: a succession of…
Ponds, wetlands and temporary flooding areas are part of green and blue corridors and provide many ecosystem services, improve biodiversity, eliminate pollutants, recreate the natural water cycle, provide flood prevention and climate change impacts resilience. They are key elements in development project of any urban, rural or natural area. In addition, these facilities play an…
Our solutions inspired by nature solve in many cases the search for the appropriate treatment of wastewater via natural treatment processes: Domestic wastewater treatment, for small towns, districts, communities of different sizes, businesses, as well as the tourism sector (hotels, parks, etc.). Management and dedicated treatment of greywater, for eco-districts, any site using dry toilets…
Our expertise is also provided as services and advice for integrated water management on-site or at watershed scale. The aim is resources preservation and enhancement, but also an increase in resilience of a site or territory. Our expertise applies to all types of land use: urban or rural, commercial or industrial, agricultural or natural areas.…
