This paper focuses on the evaluation of CO2 emission reductions that can be achieved by implementing integrated methane fermentation systems in sewage treatment plants (STPs) as a municipal organic waste recycling scheme in Tokyo Bay Region. Target organic wastes are sewage/sanitary sludge (simplified as sewage sludge in the following article due to the insignificant quantity of sanitary sludge in STPs), food wastes from household, food distribution and manufacturing sector, livestock excreta and agriculture waste. Geographical Information System (GIS) is utilized to develop a database platform which provides spatial and attribute data on the flow of organic waste matters. Two cases designed for evaluations are differentiated by the types of organic wastes and different organic wastes collecting boundaries.
ABSTRACT; The structure by which the outflow corruption to river which has brought about organic matter inflow to which population, processing of an organic matter superfluous in the river basin region area of the big city to which concentration of industry went, consumption, and abandonment exceed the environmental capacity in the river basin region area, and the corruption load of point and non-point in the ocean space carried out are finally discharged by the exclusive ocean space of a mouth of a river through a river has caused the present serious aggravation as a result.In this paper, the generating distribution of the organic waste in a city region was calculated in Saitama Prefecture and the Arakawa river basin region area over Tokyo using the calculation system utilizing GIS. Evaluation results identify about the application possibility of small-scale biomass energy use among the circulation use systems of an organic matter on it.
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