RESUMO
The banana tree circle (BTC) is a low-cost system for local greywater management, using a natural treatment and disposal process, providing additional resource recovery benefits. However, there are no standard design criteria for BTC that would allow for quality control of its efficiency and sustainability, and little is currently known about the full-scale performance of BTC. Based on the scoping literature review of 31 documents in the scientific database and eight documents from grey literature, a standard design model was proposed for the BTC technology based on the concept of water balance, greywater flows, rain, infiltration, and evapotranspiration. The first two steps of the BTC design were determining the areas required for infiltration and evapotranspiration. A cylindrical form trench, the soil percolation rate, and the hydraulic loading rate were considered for the infiltration area. The banana trees' evapotranspiration rate was taken into consideration for the evapotranspiration area. The proposed model was applied in a case study where we used a trench with 0.8 m depth and 1.5 m diameter. This study proposes a standard design criterion for the BTC based on environmental factors, and the scoping of the literature provides the basis for future studies to evaluate its environmental sustainability.
Assuntos
Modelos Teóricos , Musa , Conservação dos Recursos Naturais/métodos , Eliminação de Resíduos Líquidos/métodos , ÁrvoresRESUMO
Resumen En el presente artículo se analiza la participación y la acción colectiva en los movimientos globales de Ecoaldeas y Permacultura. Se presenta el marco teórico y el enfoque metodológico de la investigación doctoral "Marcos Culturales de Acción Colectiva en los Movimientos Globales de Ecoaldeas y Permacultura. Mediaciones, Comunidades y Redes en la Construcción Social del Paradigma Sostenible". Esta investigación se basa en una perspectiva psicosocial construccionista y metodológicamente integradora para el estudio de los marcos culturales sobre las que se basa la acción social transformadora. Estos resultados pretenden contribuir al debate, reflexión y análisis de las propuestas orientadas al desarrollo humano sostenible, como formas de acción que permiten la generación de respuestas a los complejos contextos de crisis socioambientales.
Abstract This paper analyzes participation and collective action in the global movements of Ecovillage and Permaculture. We present the theoretical and methodological approach of the doctoral research entitled "Collective Action Frameworks for Cultural Global Movements in Ecovillages and Permaculture. Mediations, Communities and Social Networks in Building Sustainable Paradigm". This research is based on a psychosocial perspective which integrates constructionist and methodology in order to study cultural frameworks based on transformative social action. These results seek to contribute to the discussion, reflection and analysis of proposals for sustainable human development as forms of action which will ultimately allow the generation of responses to complex socio-environmental crisis contexts.