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Nicolas Forquet

Nicolas Forquet

session, year:
2016 2nd


Receiving laboratory:
Center for Biofilm Engineering, Bozeman, Montana State University

Country of origin:


Country of destination:

United States of America

Last available contact



Download Curriculum Vitae

Mobility project

Innovative modeling practices for microbial activity in constructed wetlands

Constructed wetlands are the leading technology for small communities’ wastewater treatment in France. Because the regulation is becoming more stringent, the technology needs improvements. An essential step is to gain more understanding on the root/biofilm interaction and how it influences key reactions like denitrification. The center for Biofilm Engineering is developing an innovative microscale experiment to investigate it using hollow fiber membrane and microsensors. My work aims at developing and implementing an existing numerical model to assist experimental results interpretation. This mechanistic model describes the bi-directional substrate fluxes across biofilm and microbial reactions within. Expected outcomes are the development of a biofilm-based model more adequate to describe constructed wetlands complex microbial mechanisms. On the long term, simplified models will be derived to be used by designers to accelerate innovation.

Biography & research interests

I graduated from the National School for Water and Environmental Engineering (Strasbourg, France) in 2005. I obtained my PhD degree in Fluid Mechanics in 2009 at the University of Strasbourg under the guidance of Robert Mosé. My PhD work focused on the understanding of multiphase flow in vertical flow sand filters for wastewater treatment and how it influences oxygen transfer. Another innovative approach that I developed during my PhD was the usage of electrical resistivity tomography for the monitoring of constructed wetlands. This was done at the Norwegian University of Life Sciences under the guidance of Helen French. Since 2009, I am serving as research engineer at Irstea. Thanks to a large number of fieldwork and exchange with practitioners and stakeholders through the EPNAC network, I have gained expertise on constructed wetlands. I have also developed innovative and monitoring technologies and advanced modeling tools describing multiphase flow and clogging in constructed wetlands. My aim is to gain better understanding of engineered ecological systems to support their development and sustainability. Transfer of this knowledge is also at the core of my approach.

Selected publications

Kim, B., Forquet, N., 2016. Pore-scale observation of deposit within the gravel matrix of a vertical flow constructed wetland. Environmental Technology (United Kingdom), 37 (24), 3146-3150.

Samsó, R., García, J., Molle, P., Forquet, N., 2016. Modelling bioclogging in variably saturated porous media and the interactions between surface/subsurface flows: Application to Constructed Wetlands. Journal of Environmental Management, 165, 271-279.

Forquet, N., Dufresne, M., 2015. Simple deterministic model of the hydraulic buffer effect in septic tanks. Water and Environment Journal, 29 (3), 360-364.

Morvannou, A., Forquet, N., Vanclooster, M., Molle, P., 2013. Characterizing hydraulic properties of filter material of a vertical flow constructed wetland. Ecological Engineering, 60, 325-335.

Petitjean, A., Forquet, N., Wanko, A., Laurent, J., Molle, P., Mosé, R., Sadowski, A, 2012. Modelling aerobic biodegradation in vertical flow sand filters: Impact of operational considerations on oxygen transfer and bacterial activity. Water Research, 46 (7), 2270-2280.

*Vincent, J., Forquet, N., Molle, P., Wisniewski, C., 2012. Mechanical and hydraulic properties of sludge deposit on sludge drying reed beds (SDRBs): Influence of sludge characteristics and loading rates. Bioresource Technology, 116, pp. 161-169. and gaseous oxygen within a sand bed. WIT Transactions on Ecology and the Environment, 95, pp. 369-378.

Talks in annual meetings

Constructed wetland innovative modeling
2018 / P5 Products and Technology / by Nicolas Forquet / Fellows Speed Presentation


Constructed wetlands, denitrification, root/biofilm interactions, modeling