GWT Gold Sponsor at the ICWS2022


icws22 lyon






Rietland logo

 Rietland bvba has been a leader in the design and construction of natural treatment systems with plants since 1994. Working with partners all over the world, they have now built hundreds of constructed wetlands for the treatment of wastewater in the domestic, commercial and agricultural sectors. Holding the Belgian BENOR certificate, they are the only European company with the CE label for constructed wetlands.

Rietland offers the patented Forced Bed Aeration® technology in the Benelux countries and has developed the Phyto series of low-energy modular wetland solutions for treating wastewater in urban environments, small spaces and isolated areas.

Areas of specific expertise:

  • Advanced aerated wetlands
  • Agricultural and urban wastewater treatment

Rietland 2020

GWT’s contact at Rietland is its Director, Dion van Oirschot. Dion began his career at De Twaalf Ambachten, a centre for alternative technology in the Netherlands. He wrote several self-build guides before setting up a consultancy specialising in ecological solutions for wastewater and gaining the first award for the European Norm EN 12566/3 for wastewater treatment systems up to 50PE. He founded Rietland over 25 years ago and has been part of Rietland Agro, which focusses on wastewater treatment systems in the agricultural sector, since 2003.

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Rietland BVBA

Van Aertselaerstraat, 70



+32 3 294 02 65







GWT events @ ICWS2022




7/11  9am  Anacleto Rizzo   (Keynote)

Wetland community expertise in the new Nature-Based Solution and Circular Economy vision: links and new research and design trends


7/11  10.40am  Dion van Oirschot

MULTISOURCE: Aerated wetland treating black and grey water for reuse at campsite Belgium


07/11   11:40am  Heike Hoffman

The potential of the French Wetland System for reuse - Results of a long-term project in the Peruvian arid coast area


7/11  4pm Heike Hoffman

Operational experiences with a sludge treatment wetland as part of a municipal WWTP in Brazil


7/11  4.30pm Fabio Masi

Water Projects Europe: NICE / MULTISOURCE


9/11  2pm Steen Nielsen

Treatment of industrial sludge in a pilot Sludge Treatment Wetland planted with Phragmites australis and Schenoplectus californicus


9/11  2pm Riccardo Bresciani

Reed beds for drying sludge from a winery wastewater treatment plant in Spain: the WETWINE project


9/11   4.40pm  Taxiarchis Seintos

Application of a full-scale UASB and two-stage constructed wetland system for water reclamation and nutrient recycling of domestic wastewater in arid areas


9/11  5pm Simos Malamis

Investigation of the use of different filling materials in unsaturated vertical flow constructed wetlands for the treatment of UASB effluent from domestic wastewater

T. Seintos, E. Statiris, F. Masi, C. Noutsopoulos, S. Malamis


9/11 5pm Scott Wallace

Practical aspects in the determination of first-order removal rate coefficients (k) for horizontal flow treatment wetlands


10/11 11.20am Fabio Masi

Electroactive and intensified pilot-scale constructed wetlands for the treatment of high loads of septic tank effluent


10/11 2.20pm Alain Petitjean

Intensified French Treatment Wetlands - Influence of operating parameters on nitrogen removal


10/11 4pm  Andy Freeman

Treatment of de-icer contaminated runoff at a UK airport using intensified Nature Based Solutions - A 10-year operational performance review



P4: Coupling French Reed Bed and Short Rotation Plantation for developing circular economy of wastewater in India: A case of PAVITR prototype / Anacleto Rizzo

P39: Constructed wetlands for the treatment of combined sewer overflow upstream of centralised wastewater treatment plants / Chiara Sarti