초록 ▼

A looped cord biomedia filter cartridge is employed in a trickle tower filter to quickly and efficiently process wastewater. A base tank holds a volume of wastewater to be processed. The filter cartridge is mounted on top of the base tank and comprises a cylindrical frame having a plurality of upper

A looped cord biomedia filter cartridge is employed in a trickle tower filter to quickly and efficiently process wastewater. A base tank holds a volume of wastewater to be processed. The filter cartridge is mounted on top of the base tank and comprises a cylindrical frame having a plurality of upper and lower concentric hanger rings. The looped cord biomedia is interlaced, under tension, between the upper and lower concentric hanger rings to create a plurality of parallel, vertically extending, linear lengths of looped cord biomedia. The concentric hanger rings are radially spaced, and include circumferentially spaced notches for interlacing the looped cord biomedia. The spaced lengths of looped cord biomedia provide increased surface area while allowing sufficient space for water flow and air flow. Tensioning of the biomedia creates a highly desirable laminar downward flow of wastewater over the surfaces of the biomedia. The trickle tower further includes a spray bar assembly mounted on top of the filter cartridge, and a pump connected between the base tank and the spray bar assembly for circulating wastewater from the base tank to the spray bar. The spray bar provides a uniform distribution of wastewater over the top of the filter cartridge, the 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.

대표청구항 ▼

[ What is claimed is:] [21.]21. A method of treating wastewater using a trickle tower, comprising the steps of:spraying wastewater over a top of a biomedia filter assembly;said biomedia filter assembly having vertically extending spaced-apart parallel lengths of looped cord biomedia;tensioning and m

[ What is claimed is:] [21.]21. A method of treating wastewater using a trickle tower, comprising the steps of:spraying wastewater over a top of a biomedia filter assembly;said biomedia filter assembly having vertically extending spaced-apart parallel lengths of looped cord biomedia;tensioning and maintaining under tension and parallel the spaced-apart vertical lengths of looped cord biomedia;trickling the wastewater down the tensioned vertical lengths of looped cord biomedia in laminar flow;the wastewater coming into contact with biologically active microorganisms along the lengths of looped cord biomedia, these microorganisms digesting wastes in the wastewater;collecting the wastewater after trickling down said vertical lengths of looped cord biomedia; andre-circulating the collected wastewater to again be sprayed over the top of said biomedia filter assembly.