Waste treatment with nitrate removal

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United States of America Patent

PATENT NO 5258121
SERIAL NO

08002716

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A substantially closed loop waste treatment and water recycling system. The system includes one or more flush-type toilets and urinals which receive flush water from a water return station and deliver waste and flush water to an anoxic reactor. The anoxic reactor contains bacteria which de-nitrifies the mixture. The de-nitrified mixture is transferred into an aerobic digestion chamber where bacteria oxidizes various components of the mixture to obtain a liquid product having a high concentration of nitrates and a low concentration of soluble carbonaceous compounds. This liquid product is filtered, treated with activated carbon, disinfected, and subsequently returned to the water return station as colorless and odorless flush water. Recycled flush water in excess of flush water requirements is further treated in a secondary nitrate removal station and discharged from the system.

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Patent Owner(s)

Patent OwnerAddress
THETFORD CORPORATION7101 JACKSON ROAD ANN ARBOR MI 48106

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Irwin, John L Ann Arbor, MI 1 11
Jordan, Edward J Brighton, MI 11 294

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