935 resultados para Small Scale Municipally


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The international community has expressed a renewed interest in small scale agriculture and the role it plays in long-term food security in the face of climate change and population growth. This interest has led to a new development paradigm in which small scale producers are being brought into the global market. Undoubtedly, small scale agriculture should be pursued as a sustainable form of development which can contribute to poverty alleviation, environmental stewardship, and the preservation of genetic diversity. These unique contributions are inherently threatened by a system captured in the idea of the neoliberal food regime. The ability of small scale agriculture to uphold the goals of food security are dependent on recognition and preservation of these contributions.

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"Project no. 80.190."

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"M0017."

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Mode of access: Internet.

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Thesis (Master's)--University of Washington, 2016-06

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The aim of this study is to quantity the effect of filter bed depth and solid waste inputs on the performance of small-scale vermicompost filter beds that treat the soluble contaminants within domestic wastewater. The study also aims to identify environmental conditions within the filters by quantifying the oxygen content and pH of wastewater held within it. Vermicompost is being utilised within commercially available on-site domestic waste treatment systems however, there are few reported studies that have examined this medium for the purpose of wastewater treatment. Three replicate small-scale reactors were designed to enable wastewater sampling at five reactor depths in 10-cm intervals. The surface of each reactor received household solid organic waste and 1301 m(-2) per day of raw domestic wastewater. The solid waste at the filter bed surface leached oxygen demand into the wastewater flowing through it. The oxygen demand was subsequently removed in lower reactor sections. Both nitrification and denitrification occurred in the bed. The extent of denitrification was a function of BOD leached from the solid waste. The environmental conditions measured within the bed were found to be suitable for earthworms living within them. The study identified factors that will affect the performance and application of the vermicompost filtration technology. (C) 2004 Elsevier B.V. All rights reserved.

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Two forms of small-scale forestry are developing in Australia, each with different impacts on rural communities. One is based on growing short-rotation Eucalyptus globulus (blue gum) for pulp and the other on production of higher-value products from longer-rotation native hard-woods. Several impediments exist to further development of small-scale forestry, including the lack of a small-scale forestry culture, concerns over harvest rights, lack of market development, the long wait for returns, and satisfaction with current land uses. Nevertheless, the rapid increase in farm woodlot establishment in the past five years has paralleled the strong increase in the private industrial plantation estate. As markets develop and hindrances are overcome, landholders not previously interested in small-scale forestry may consider ita worthwhile land use.