Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Reexamination Certificate
2006-01-10
2006-01-10
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
C210S196000, C210S197000, C210S220000, C210S532100
Reexamination Certificate
active
06984317
ABSTRACT:
A system and method for treatment of soot-laden waste water is disclosed. The method comprises the steps of separating the soot from the waste water initially in a clarifier. The concentrated soot is then treated with an activated sludge mixture in a digester with a very long average hydraulic retention time to effectively digest the materials found in the concentrated soot. Soot-free waste water is treated via standard aerobic, and anoxic reactor basins and a clarifier with activated sludge recirculation. The system effectively removes soot from soot-laden waste water in a cost effective manner.
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English language translations of the abstracts for DE 3501585A1; DE915026A1; DD244970A1; and FR2741872A1.
Brocato James R.
Duvvuri Murthy S.
Hiatt William C.
Lierman Donald O.
McDavid Olaf
Barry Chester T.
BASF Corporation
Borrego Fernando A.
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