Patent ID: 6241889
Filing Date: 2001-06-05
Classification: C02F,Y02W

Abstract:
A trickle tower filter apparatus comprising:a base tank holding a volume of wastewater to be processed;a biomedia filter assembly mounted on top of the base tank, said biomedia filter assembly comprising a frame having a plurality of upper and lower horizontally extending, parallel, spaced hangers, said biomedia filter assembly further comprising a looped cord biomedia interlaced, under tension, between said upper and lower spaced hangers to create a plurality of parallel vertically extending, substantially equally spaced, linear lengths of looped cord biomedia, said tensioned, vertically extending lengths of looped cord media being effective for creating a laminar downward flow of wastewater over the surfaces of the looped cord biomedia;said biomedia filter assembly being circular in shape and said plurality of upper and lower hangers comprising concentric rings having circumferentially spaced notches for interlacing said looped cord biomedia;a rotatable spray bar mounted on top of the biomedia filter assembly; anda pump connected between the base tank and the spray bar, said pump continuously circulating wastewater from the base tank to the spray bar, said spray bar rotating to provide a uniform spray of wastewater over the top of the biomedia filter assembly, said wastewater trickling down the vertical lengths of looped cord biomedia in a laminar flow where the wastewater comes into contact with biologically active microorganisms on the biomedia effective for digesting wastes in the wastewater, said wastewater trickling back into the base tank for re-circulation.