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US 2011/0031177 A1Published application
Tertiary filter
OwnerDonald D. Rickettsinventor
Life of this patent
Estimating the term…
Abstract
A filter cloth of long pile fiber bundles is used as a tertiary filter in a wastewater processing method. The filter may be backwashed by a rotating suction head which does not touch the filter cloth. A combination of countercurrent and horizontal flow dislodges entrained solids from the filter cloth. Mounting of the filter media as modular components permits increased capacity within a single tank while avoiding down time in changeover of filter media.
Claims14
1-21. (canceled)
A modular filter assembly comprising a peripheral frame, said peripheral frame defining an outlet for filtered wastewater at an upper end thereof;
- a first supporting backing plate attached to said peripheral frame to form a front face;
- and a second supporting backing plate attached to said peripheral frame to form a back face of said modular filter assembly;
- said first backing plate forming said front frame being covered with a first filter media;
- said second backing plate forming said rear frame being covered with a second filter media;
- the first and second filter media;
- in combination with said peripheral frame defining an enclosed space into which filtered wastewater can accumulate;
- said outlet being in fluid communication with said enclosed space into which filtered wastewater can accumulate.
4 more elements
Dependencies are inferred from the claim text.