| 摘要 |
PURPOSE:To drastically reduce the generation of sludge and to remarkably decrease the load on a sludge treating stage (dehydration and incineration) when night soil is treated. CONSTITUTION:Night soil 1 is flocculated by a high molecular flocculant 3, the flocculated sludge 5 is subjected to methane fermentation and then dehydrated, and the liq. 11 separated by dehydration and the liq. 6 separated by flocculation are biologically nitrified and denitrified. |
