This explanation covers the innovative biogas plant implementation at the Japan Pavilion for the Osaka-Kansai Expo, detailing its mechanisms and significance.
The Japan Pavilion implements an actually operating biogas plant to realize the concept of a "living pavilion that eats waste." Food waste collected within the venue is transported daily to the Japan Pavilion, crushed finely by a crusher, then fermented in methane fermentation tanks to produce biogas. This collected biogas powers generators, with the produced electricity used within the pavilion. The plant area exhibition expresses these actual backyard processes through conveyor belts and light installations.
The water purification system from food waste deserves attention. Initially containing impurities, wastewater undergoes thorough purification at the Japan Pavilion. Water is purified step-by-step using purification equipment, then fine impurities are removed through filtration membranes. Finally sent to the central water basin, the clear water visitors see has actually been "reborn from waste to water." This water transformation process is designed for visual confirmation at each stage from food waste to the water basin.
A special program offers "Japan Pavilion Biogas Plant Tours" where visitors can wear helmets and tour the actually operating plant backyard. They can directly observe equipment collecting and crushing food waste, fermentation tanks, generators, and purification facilities, providing an excellent opportunity to understand the Japan Pavilion's true nature.
The article evaluates the Japan Pavilion as revolutionary, fundamentally overturning the conventional expo pavilion concept of "buildings displaying exhibits" by operating a real plant.