不均一電界を利用した活性汚泥の脱水分離　電極形状の改良:電極形状の改良

概要

論文の詳細を見る
The best method for dewatering of activated sludges with a nonuniform electric field was investigated using a cylindrical cell with improved electrodes. The experiment was carried out in a D.C. electric field with a buffered solution of 0.03 mol·l-1 Na2B4O7·10H2O to keep the pH of activated sludge about 9.0.The results showed that the buffer action was very effective for dewatering of an activated sludge, and that the stainless steel cylindrical cell with improved electrodes produced the profile of strong electric field in a cell. It was comfirmed that when the water separated from the sludge in a cell pumped out at 16 ml·min-1 with microtube-pump by the amount of about 50 wt% water in a sludge from 2 hours after the start of the turning on electricity, with 30 volt of external field almost all sludge particles were coagulated around the outside of the anode and the water contents in a dewatered activated sludge could be reduced up to about 60%, and further the amount of electricity was reduced.
日本水環境学会 = Japan Society on Water Environmentの論文