Good wastewater management in quarries is a major challenge for sustainable development. The career of SCAN TOGO, to face this challenge, set up a system of treatment of wastewater produced on the site, before the spill in the receiving environments. This project has been proposed to strengthen the existing treatment system. It aims to sustainably manage wastewater from the quarry using the phytopurification technique, which relies on reactions occurring in natural environments and allows the reduction of pathogens, suspended solids and organic materials such as chemical oxygen demand and biological oxygen demand for 5 days. This technique is made possible by the interactions between the substrate, microorganisms and aquatics plants (Phragmites mauritianus, Typha latifolia, Thalia dealbata, Brachiaria mutica, Pistia stratiotes, Canna indica, Colocasia esculenta, Cyperus alternifolius, Eichhornia crassipes ...). Specifically, the project will make it possible to make a diagnosis on the existing treatment system in order to take into account deficiencies in terms of compliance with the rejection standards in force, to install a phytostation whose performance will be evaluated by results. analysis of treated water and to show the impact of the use of these waters in irrigation.

Phase 3: Implementation and Installation of Phytostation: Phyto-Purifying Plant Nursery

We carried out the cultivation and nursery of aquatic plants that we will use for phytostation. Beyond the aesthetic aspect, the plant species are specially selected according to their purifying property and the purification system.

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18Apr

Phase 3: Implementation and installation of phytostation: The phytopurification principle

The phytostation that is being implemented relies on reactions occurring in natural environments and allows for the abatement of pathogens, suspended solids (SS), as well as organic matter such as chemical oxygen demand (COD). and the biological oxygen demand for 5 days (BOD5).

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17Apr

Phase 2: State of play on SCAN TOGO wastewater management

The activities of the second phase consisted in making a description of the existing treatment station, to see in a global way the performance of the station through the comparison of the analysis results of the water samples taken (STEP input and STEP output). ) the limit values ​​of wastewater discharge standards (Senegalese rejection standards). We also noted the strengths and weaknesses of the system and proposed recommendations that will be taken into account in the new treatment system...

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16Apr

Phase 1: documentary research and exchange with resource persons

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...

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07Mar

Framing project activities

Following the observations of the juries, a methodological framework was made by the team. The implementation phases of the project activities were retained.

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07Mar
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