SOLID-LIQUID SEPARATION MECHANISM AND ORGANIC WASTEWATER TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an organic wastewater treatment apparatus constituted so as to return the sediment from a sedimentation part into the sedimentation part by a floating gas to prevent the same from whirling up.;SOLUTION: The organic wastewater treatment apparatus is equipped with a treatment tank 11 having a reaction part 12 formed to its bottom part, a supply pipe 21 for supplying organic wastewater into the reaction part 12, the sedimentation part 31 of which the upper end is protruded from the surface of the water, the gas collection part 41 arranged under the sedimentation part 31 to collect the gas floating to the underside opening 36a of the sedimentation part 31, an exhaust pipe 42 for exhausting the gas in the gas collection part 41 from the surface of the water, the spiral passage forming member 51 arranged in the sedimentation part 31 to form a spiral passage 52, a treated water supply part 71 for supplying the treated water outside the sedimentation part 31 to the area under the spiral passage forming member 51 in the sedimentation part 31, a drain part 81 for discharging the treated water in the sedimentation part 31 to the outside of the treatment tank 11 and an annular baffle plate 91 for preventing the gas from flowing in the opening 36a of the sedimentation part 31 and passing the sediment from the opening 36a through the gas collection part 41.;COPYRIGHT: (C)2005,JPO&NCIPI