Operation Result of Shochu Co-Product Recycling Plant for Southern-Green Unions

摘要

Shochu is produced mainly on the island of Kyushu. In the past, the residue of distillation containing organic matter had been discharged into the ocean. However, land treatment technologies for such waste have become necessary due to the London treaty and domestic laws. More efficient, environmental, and cost-saving technologies are needed. It was believed that a methane fermentation and hydrothermal liquidization system would meet these needs if an efficient methanogenic reactor would be used. The full-scale plant comprising screw decanters for SS control, an IC (internal circulation) reactor for methane fermentation, post-treatment reactors for the removal of residual BOD, nitrogen, phosphorus species and hydrothermal reactor for solid reduction was applied to shochu distillery waste in May 2002. The result of operation is reported here.