Liquid purification or separation – Processes – Treatment by living organism
Patent
1997-08-29
1999-06-01
Upton, Christopher
Liquid purification or separation
Processes
Treatment by living organism
210614, 210617, 210903, C02F 306
Patent
active
059085550
ABSTRACT:
A biotreatment cell for removing nitrate from water is provided comprising a closed tank having an inlet port and an outlet port, and containing therein particulate matter which forms a fixed porous bed on which microorganisms form a biofilm. Water travels from the inlet to the outlet thereby passing through the bed. The particulate matter has a density and size sufficient to form a fixed bed during the nitrate removal process and provides a bed having a porosity of about 0.25 to 0.95, preferably about 0.45. The bed material is preferably geochemically stable natural rock crushed to promote a specific size distribution. A method and additive system to maintain the nutrient phosphate level at a controlled effluent concentration are also provided for efficiently removing nitrate from water using the biotreatment cell of the invention.
REFERENCES:
patent: 624985 (1899-05-01), Scott-Moncrieff
patent: 4225430 (1980-09-01), Bosman
patent: 4465594 (1984-08-01), Laak
patent: 4561974 (1985-12-01), Bernard et al.
patent: 4627917 (1986-12-01), Morper
patent: 4800021 (1989-01-01), Desbos
patent: 4925552 (1990-05-01), Bateson et al.
patent: 5217616 (1993-06-01), Sanyal et al.
patent: 5458799 (1995-10-01), Odegaard
patent: 5462666 (1995-10-01), Kimmel
patent: 5543039 (1996-08-01), Odegaard
patent: 5626754 (1997-05-01), Ballnus
patent: 5632715 (1997-05-01), Harrington et al.
patent: 5681471 (1997-10-01), Silverstein
patent: 5707513 (1998-01-01), Jowett et al.
Eckenfelder, "Principles of Water Quality Management", 1980 p. 303.
Botz Maxwell K.
Reinsel Mark A.
Hydrometrics, Inc.
Koch Kenneth A.
Tomaszewski John J.
Upton Christopher
LandOfFree
Anoxic biotreatment cell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anoxic biotreatment cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anoxic biotreatment cell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-952854