Phase 1: documentary research and exchange with resource persons
The work is mainly based on documentary research, exchange with resource persons. The documents relating to the phytopurification technique were consulted. This work allowed us to take stock of:
- Installation conditions and procedures for producing phyto-purification ponds;
- the choice of substrate (gravillary and alluvial materials) to be used; and
- plants effective for phytopurification (the choice of plants has been reinforced with the support of Professor AKPAGANA and the head of the nursery section of SCAN TOGO).
This phase led to the writing of the technical sheet of the experiment.