抄録
We reported earlier that the Trickling Filter process is useful for COD removal, Copper removal and others. But the last report was based on the experiments made for a short period. Therefore, no satisfactory explanation was presented, because we have no sufficient data to draw any fundamental conclusion as to the biological treatment efficiency for a long period. Therefore, we carried out this work to obtain much fundamental information on the effect of the removal by the experiments for a long period. And besides, we found that the removal effect by the slime has a physical and chemical function, and we have also examined the function - coagulation efficiencies to various concentration of copper.
