Forschungsbericht 2018
Strategies for large-scale Implementation of Terra Preta Sanitation for Peri-Urban Areas
High population growth rates in low and middle-income countries have led cities to expand into surrounding spaces creating informal settlements, which many times lack planning and basic services like water supply and sanitation. In these areas where water and financial resources are usually scarce, conventional sanitation systems are not always the most optimal solution. Instead, Ecological Sanitation systems have the advantages of nutrient recovery from excreta and a lower water consumption and cost. Among Ecological Sanitation systems, Terra Preta Sanitation (TPS) has the advantages of being an odorless, low-cost dry sanitation system, which recovers nutrients from excreta, helping produce very fertile soils. With the production of compost from excreta, very fertile soils needed for agriculture and to improve water security are created. In this way, peri-urban areas are able to produce food and other ecosystem services, which are needed for the survival of cities. While studies have shown TPS to be effective in rural areas or isolated houses, no major studies have been made for its implementation at a large scale and in multi-story houses, which is the focus of this project. This project seeks to develop a holistic framework of strategies to implement a large-scale TPS system in a peri-urban area, focusing on all relevant aspects and the synergies between them, such as the technological, environmental, economic, governance and social. It will also look at the application of this system in a case study in Mexico. Stichworte
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