Abstract
This study clarified local nitrogen balance and evaluated treatment technology of surplus nitrogen in Toyohashi city, Aichi prefecture. As a result, Toyohashi city's nitrogen balance is showed that compost production potential is bigger than organic material application capacily on farmland, therefore, it is unfit to apply all emitted manure into farm1and in Toyohashi city by the environmental concem. Nevertheless, current application is overto apply more than organic material application capacity. For this reason, methane fermentation and mcinerationscenariowassettotreatthissurplus nitrogen. These scenarios were evaluated by the life cycle greenhouse gas emission comparing with current condition. The result shows a possibility that can reduce approximately 11, 000ton-CO2eq of greenhouse gas emission by introducing methane fermenmdon scenado into Toyohashi city.
