Human excreta to biogas and fertilizer
In the future toilets which are recycling human excreta to biogas are widely used and unlike in 2011, most of the people living in poor areas in developing countries have access to proper sanitation.
Dry toilets and biogas toilets are an essential part of sustainable development. In the future, toilets which are recycling human excreta to biogas are widely used and unlike in 2011, most of the people living in poor areas in developing countries have access to proper sanitation. The lack of sewerage system or waste water management is not really a huge problem because dry toilets and new technology based biogas toilets have replaced old pit latrines and other impractical toilets.
Using toilets which are linked to biogas plant, people get rid of the health hazards caused by bad sanitation and the pathogens in untreated human waste. Also natural water resources are protected from pollution (which was before caused by discharging untreated waste water to lakes, rivers etc). Most of the pathogens die in anaerobic conditions during the producing process of biogas.
These biogas toilets provide not only bio energy but also environmental friendly fertilizer which improves the poor soil quality. Before the soil erosion on arable land was one of the main reasons for food shortage and large proportion of the population in rural areas lived below the national poverty line. Former intensive applications of agricultural chemicals lead to degradation and pollution of available land. However, because of the improvements in agriculture, in other words the access to environmental friendly fertilizer gained from toilets, has improved the life conditions in rural areas.
Long story short, implementation of human excreta based biogas toilets in developing countries had multiple advantages; they improved sanitation, made bio energy available also in rural areas and gave environmental friendly fertilizer.
Opportunity: Improves sanitation, makes availability energy, bio fertilizer and protects water sources from pollution.
Threat: Human excreta based biogas technology is not socially acceptable in certain cultures, which slows down the implementation.