The Toxic Effect of the Copper for Trickling Filter -A Long Period Examination

Abstract

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.