FILTER TYPE UPFLOW FILTERING APPARATUS WITH DOUBLE TREATMENT VESSEL

摘要

PURPOSE: A filter type upflow filtering apparatus with double treatment vessel is provided which increases purification efficiency of the final treated water by constructing the filtering apparatus in a double treatment vessel form. CONSTITUTION: The filter type upflow filtering apparatus with double treatment vessel comprises a first treatment vessel(10) comprising a sand collection unit(11) installed at the inner lower central part of the first treatment vessel(10), a bamboo hat shaped inclined plate(12), a raw water line(13) which is installed at one side of the first treatment vessel(10), and into which scum adhered sand is transferred and supplied through a sand pipe(11a), an air line(14) which is installed on the raw water line(13) to separate final treated water and scum, an injection nozzle(15) which is extended from the raw water line(13), a vortex forming plate(16) which is installed adjacently to the lower part of the injection nozzle(15), a rod shaped ultrasonic generator(17) which is installed in the raw water line(13), and a scum discharge line(19) comprising a water level adjuster(18) installed oppositely to the raw water line(13); and a second treatment vessel(20) comprising perforated holes(21) which are formed on the lower part of the second treatment vessel(20) that is inclined in a tubular shape in the upper part of the bamboo hat shaped inclined plate(12) of the first treatment vessel(10), a baffle(23) on which perforated holes(22) are formed in the upper part of the second treatment vessel(20), a polygonal ultrasonic generator(24) which is installed at the lower center of the baffle(23), gravel (illite, veinstone)(27) which is filled in the inner part of the baffle(23) and agitated by an agitation blade(26) rotated by a speed reducer(25), and an UV lamp(29) which is spaced apart from the gravel (illite, veinstone)(27) to sterilize the final treated water by irradiating ultraviolet rays and ozone onto the final treated water discharged through a filtrate discharge port(28) formed at one side of the second treatment vessel(20).