Self-regenerating biofilter
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United States of America Patent
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Dec 3, 2019
Grant Date -
Feb 14, 2019
app pub date -
Mar 31, 2018
filing date -
Sep 30, 2015
priority date (Note) -
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Abstract
The present invention is a self-regenerating biofilter. The biofilter tank receives untreated water through an intake inlet, filters it through a filtration mass and expels purified water through an output outlet. The filtration mass includes gravel and activated carbon layers separated by a mesh screen. A compressed air line is located below the mesh screen. Periodically, the biofilter self-cleans by opening a flush valve that expels a flush water stream carrying debris. The biofilter self-regenerates by periodically stopping filtration for a time, allowing biological matter left on the activated carbon to degrade into biomass. Periodically, the biofilter removes and flushes out biomass by application of water or a combination of air and water.
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