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Cycle 8 (2019 Deadline)

Increasing access to sanitation services integrated with resource recovery in rural Burkina Faso

PI: Ynoussa Maiga (, University of Ouaga I Pr Joseph Ki-Zerbo
U.S. Partner: James Mihelcic, University of South Florida
Project Dates: To be determined

Project Overview:
The development of efficient sanitation technologies and practices can enhance the resilience of local populations from adverse consequences related to the lack of appropriate sanitation. Many imported water and sanitation technologies have failed because they were not adapted to local conditions or did not correspond to the needs of end users. This project will develop, under real conditions, sanitation technologies and resource recovery technologies in a participatory way in order to increase their robustness and acceptability by local beneficiaries. The PI and his team will develop a greywater treatment unit to collect and treat household wastewater for reuse in gardening. A Slanted Soil Treatment System (SSTS) has been previously designed and tested for greywater treatment at the household level, but the quality of the treated greywater was not sufficient to allow its safe reuse in gardening. The current project will test modifications made to the treatment system, including the configuration of the SSTS, the characteristics of the filter bed, and addition of plants to enhance its efficiency, making possible the safe reuse of the treated water for food crop irrigation. In addition, a composting toilet with urine diversion has been developed for rural households. However, concerns related to the biodegradability of the organic matter, hygiene, and maturation of the compost have emerged. The PI and researchers in this project will test new strategies by mixing urine and feces in the dry toilet. In addition, they will design a composting pit and use it in an additional step for the maturation and sanitization of the compost collected from the composting toilet, including through mixture with agricultural waste. The most efficient operating conditions allowing for the production of hygienic and nutrient-rich compost will be determined by testing several mixtures. Tentative thermal inactivation pathogens using sunlight will tested with the aim of making the compost more hygienic. These modifications should enhance the safety of the compost and increase its acceptability.

Ten households from two rural settlements will be involved in this study to develop and assess at the household level a greywater treatment unit and a composting toilet, as well as the possibility of reuse of sanitation by-products (treated greywater and compost) for safe vegetable production. The project will therefore achieve impacts along several lines, including encouraging sustainable adoption of adequate hygiene and sanitation practices in rural areas, enhancement of quality of life and improvement of rural residents’ diets through the increased production of vegetables, reduction of sanitation-related diseases (malaria, diarrhea), and strengthening of the capacities of the rural population in terms of hygiene, sanitation, and valorization of sanitation by-products.

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