| 摘要 |
<p>PURPOSE:To humify and remove efficiently the BOD, etc. of night soil by providing an adjustment stage for adjusting the night soil, etc. subjected to a solid-liquid sepn., etc. to SS, culture stage for culturing the sludge and reaction stage for bringing the cultured sludge into reaction with the adjusted sludge before a cleaning up treatment stage for said night soil. CONSTITUTION:A lipid adsorptive material such as diatomaceous earth is added to the night soil and further activated humus is added thereto and the night soil is adjusted to SS by repeating >=3 ties the combined operation of the air oxidation by ventilation and the reduction by resting in the adjustment stage 1. The activated humus of a high concn. and the night soil are mixed and agitated for >=6 days to humify the SS of the night soil and adjusted night soil to a sludge form and the dissolved components are made into the cultured sludge in the culture stage 2. The cultured sludge of the same amt. in terms of the COD of the adjusted night soil and the activated humus used is mixed with said night soil and the mixture is agitated or 4hr at <=15 deg.C and 1hr at 25 deg.C to effect reaction in the reaction stage 3. The SS components of the night soil are humified simply by mixing and agitating the adjusted night soil and the cultured sludge in a short period in the stage 3.</p> |
