Chemically enhanced primary sludge fermentation method

Details Chemically enhanced primary sludge fermentation method Chemically enhanced primary sludge fermentation method

2006-01-03

2006-01-03

Barry, Chester T. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S906000, C210S723000, C210S724000, C210S725000, C210S732000, C210S768000

Reexamination Certificate

active

06982036

ABSTRACT:
A method of treating wastewater to increase effluent volatile fatty acid content consisting of providing wastewater to a primary treatment vessel and adding a select quantity of a chemical, typically an aluminum or iron salt, to the wastewater, enhancing the separation of organic matter. Separated organic matter is then removed from the chemically treated wastewater forming a primary sludge and a primary effluent. A portion of the primary sludge is fermented to form a volatile fatty acid rich liquor. The volatile fatty acid rich liquor may then be used with the primary effluent, directed to a bioreactor, thereby forming a volatile fatty acid enriched bioreactor feed. The volatile fatty acid enriched influent may be further treated through known biological phosphorous and nitrogen removal methods.

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