FILTRATION SYSTEM CONTAINING DISSOLVED AIR FLOTATION FACILITIES

摘要

A dissolved air flotation type filter basin is provided to increase filtration efficiency in the filter basin and prevent clogging of the filter basin. A dissolved air flotation type filter basin comprises: a raw water inflow pipe(11) supplying raw water to a central waterway(102) formed by both partitions in the center of a filter basin; a pressurization pump(21) in which purified water and air flow, and which produces and supplies pressurized water; a pressurized water pipe(24) in which pressurized water spray nozzles(25) are formed to spray pressurized water supplied from the pressurization pump to the central waterway in order to float contaminants in water onto the water surface; a scum hopper(52) collecting scum floated onto the water surface of the filter basin to discharge the collected scum; an air compressor(22) applying compressed air to the pressurization tank; a pressurization tank(23) mixing purified water with air supplied from the air compressor to produce and store pressurized water; and scum collectors(51) collecting contaminants floated onto the water surface of the filter basin.