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Living
A
Biogas-After sewage has been compos-ted, biogas can be collected for cooking. Biogas taps, like water kiosks, are primary social meeting areas.
B
C
D
A
Composting-Composed sewage can safely be spread as fertilizer. This is an important addition to Ouagadougou’s poor soil.
B
Employment-Composed sewage can provide employment opportunities for a population that is severely underemployed
C
Mixer-Human waste by itself cannot sustain the system. Therefore, animal waste and straw can be added. Reducing direct exposure to animal feces has health benefits as well
D
A
B
C
Urine and Feces Separation-Separation allows water to evapo-rate while more harmful residuals can be composed. This results in a reduction in soil pollution
A
Holding-Evaporation and holding tanks reduce groundwater contamination.
B
Compost-Dry compost is removed for agricultural uses and fuel.
C
A
DETAILED SECTION - HOUSING UNIT SEWAGE