| 摘要 |
PURPOSE:To treat various sludges with microbiological activity, by a method wherein sludge to be treated is injected into and added to a treating medium layer containing a predetermined amount of wooden fine pieces with a definite particle size and treated at a peripheral temp. while aeration is performed to the treating medium layer intermittently at predetermined time intervals. CONSTITUTION:Sludge to be treated is diluted to about 1,000ppm or less by water and insoluble inorg. substances are precipitated and removed from diluted sewage. One pts.wt. of the diluted sewage is injected into and added to 1- 10pts.wt. of the treating medium layer containing wooden fine pieces with a particle size of 0.2-5mm.. When the sewage is treated at a peripheral temp. while aeration is performed to the treating medium layer intermittently at predetermined time intervals, the org. substances are decomposed by microorganisms in the treating medium layer and the sewage comes to water having dischargeable quality.
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