The Method Of Material Flow Analysis, A Tool For Selecting Sustainable Sanitation Technology Options: The Case Of Pouytenga (Burkina Faso)
Free (open access)
671 - 680
L. S. A. Yiougo, H. Koanda, J. Wethe, C. Luthi, O. Yapo & E. D. Dapola
Like many other cities in Sub Saharan Africa, Pouytenga in Burkina Faso has sanitation problems characterized by poor public health. Pouytenga is located upstream of the dam of Yitenga, and the pollution of this city is drained into this dam, which is used to supply drinking water. The city has no strategic sanitation plan. So, the objective of the study is to assess the dynamics of material flows and pollutant (nitrogen) through different technological sanitation options of Pouytenga. The method of material flow analysis (MFA) is used to assess the matter and nutrients fluxes. The methodology includes literature review, household surveys and chemical analyses of wastewater and fecal sludge. Several scenarios of sanitation options have been assessed. The results show that Pouytenga currently discharges about 61,824 tons of material, including 36 tons of nitrogen per year in surface water and 373 098 tons of materials, including 282.6 tons of nitrogen on groundwater per year. The promotion of diverted urine toilets in the city and solid waste composting is expected to recover 194 tons of nitrogen for agriculture. Keywords: poor public health, pollution, nitrogen, material flow analysis.
poor public health, pollution, nitrogen, material flow analysis