越前町における集約バイオマスメタン発酵の経済性検討

Abstract

The economic feasibility of an integrated methane fermentation facility was investigated by applying the Ishikawa model cost function to Echizen Town, where many treatment facilities exist after the merger of towns and villages. It was found that sludge alone is economically disadvantageous, but the addition of the entire amount of food waste generated can be economically advantageous. On the other hand, when processing 30% of the food waste, the costs for the existing facilities were same as those for the integrated Ishikawa model. Since food waste is often incinerated as combustible waste, a future challenge is how to collect it. Other biomass such as fishery waste, pruned branches and mowed grass should also be considered as targets for methane fermentation.departmental bulletin pape