Friday 19 February 2021

Reports to better understand territorial/eco-enterprise collaborations

Within the framework of their "Wastewater treatment" courses, the students Bachelor in Environmental coordination in 3rd year, had to get in touch with several economic actors of a territory. An opportunity to put themselves in the shoes of an environmental project coordinator!

Project N°1: Study of a lagoon area

This first reportage project concerns the lagooning area (artificial wetland for wastewater treatment) in the commune of Bonnemain (35). Several characteristic stages were carried out :

  • Contacting the commune of Bonnemain to find out if they would accept to receive them   
  • Visit the lagoon area   
  • To question the mayor and the commune's technician on the technical elements of the lagoon.   
  • Contact the STGS, the company in charge of the management of the lagoon area, in order to have more technical information on its operation.   
  • Synthesize the information collected in order to create the poster, which should be as educational as possible.   
  • Support the project with the class with the poster below as the main illustration.

"This work was very interesting and enriching because we saw concretely how this wastewater treatment process works. It is always easier to understand a technique when we can see it with our own eyes. We also greatly appreciated the kindness of the mayor and his technician who welcomed us despite a complicated sanitary situation", explains Mélanie.


Poster résumé de l'étude d'une zone de lagunage-Bonnemain
Poster summary of the study of a lagoon-Bonnemain area


Project N°2 : Aquaponic cycle, between fish breeding ponds and plant culture

This team of Bachelor students have chosen to study the aquaponics cycle. To do so, they visited Agriloops farms and exchanged with the founders, two agronomists engineers. The latter are working on the realization of an aquaponic farm using salt water! An innovative system that would allow the breeding and sale of prawns, as well as leafy vegetables. The Agrocampus students' project is to be followed, it should be completed in the coming months.

What is the advantage of aquaponics? This method of cultivation reduces water losses by up to 90% compared to soil cultivation!

On the poster below, you can see the connection between the fish rearing tank connected to the plant growing tank. A biofilter is also installed, it is used to transform the ammonia rejected by the fish into nitrate assimilable by the plants.

"The theme is very interesting, on a larger scale we can compare it to the circular economy, where the waste of one is the resources of the other. It's up to us to apply this sustainable concept," enthuses Paul, one of the 4 project team members.

Thanks to the poster you will find all the information you need to start such a cycle!


Poster résumé cycle aquaponique
Poster abstract aquaponic cycle


The defense of these 2 projects is a finality allowing to emphasize the spirit of synthesis of the students and the collective work in spite of sanitary conditions slowing down the team work. Challenge taken up!

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