TWO-BED JUXTAPOSITION TYPE AEROBIC FILTER BED TANK AND SEWERAGE TREATMENT SYSTEM INCORPORATING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a sewerage treatment system which makes possible to obtain treated water of good water quality. SOLUTION: The aerobic filter bed tank 3 is juxtaposed with a bioreaction chamber 14 having a bioreaction bed 5 and a filter chamber 15 having a filter bed 6 apart a partition wall in this order successively from an upstream side, is installed with n air diffusion member 9 for reaction in the lower part of or below the bioreaction bed 5 and is installed with an air diffusion member 10 for cleaning in the lower part of or below the filter bed 6. The tank described above is provided with an aperture 13 toward the downstream side in the lower part of the filter chamber 15 and is provided with a transfer pump suction port 11a on the base surface of the filter chamber 15.