Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2005-03-15
2005-03-15
Prince, Fred G. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S631000, C210S903000, C423S237000, C071S010000
Reexamination Certificate
active
06866779
ABSTRACT:
A process for the recovery of nitrogen from anaerobically digested liquid waste and for the collection of the nitrogen as nitrate compounds that can be used to produce fertilizer and compost, includes stripping ammonia from anaerobically digested liquid waste, and converting the ammonia into nitrates via nitrification.
REFERENCES:
patent: 3642618 (1972-02-01), Silva
patent: 4076515 (1978-02-01), Rickard
patent: 4267050 (1981-05-01), Conway et al.
patent: 4510057 (1985-04-01), Rowe et al.
patent: 4790944 (1988-12-01), Gordon et al.
patent: 4894162 (1990-01-01), Cournoyer et al.
patent: 4900452 (1990-02-01), Angles et al.
patent: 4959084 (1990-09-01), Wolverton et al.
patent: 5015384 (1991-05-01), Burke
patent: 5053140 (1991-10-01), Hurst
patent: 5310485 (1994-05-01), Roshanravan
patent: 5397461 (1995-03-01), Augustin
patent: 5670047 (1997-09-01), Burke
patent: 5702612 (1997-12-01), Wang
patent: 5858768 (1999-01-01), Bonnin et al.
patent: 5891711 (1999-04-01), Carter
patent: 5900159 (1999-05-01), Engel et al.
patent: 5670047 (1999-09-01), Burke
patent: 6113786 (2000-09-01), Burke
patent: 6113789 (2000-09-01), Burke
patent: 6299774 (2001-10-01), Ainsworth et al.
patent: 6309547 (2001-10-01), Burke
patent: 6464875 (2002-10-01), Woodruff
patent: 6500340 (2002-12-01), Burke
patent: 6569332 (2003-05-01), Ainsworth et al.
patent: 6616844 (2003-09-01), Park et al.
patent: 20030052061 (2003-03-01), Burke
patent: 20030141244 (2003-07-01), Hansen et al.
patent: 6-71293 (1994-03-01), None
“Ammonia Stripping,”Wastewater Technology Fact Sheet, U.S. Environmental Protection Agency, Washington, DC, Sep. 2000, 4 pages.
“Beginner's Guide To Nitrification/Denitrification Technologies,” <http://www.envstudies.brown.edu/Thesis/2002/caton/WWTFpages/WWTFgeneral.htm> [retieved 2003], 4 pp.
“Biological Treatment of Gases (Biofilter),” n.d., <http://www.res.titech.ac.jp/˜junkan/english/deodorize/> [retrieved Jul. 16, 2003], pp. 1-3.
Burke, D.A.,Dairy Waste Anaerobic Digestion Handbook: Options for Recovering Beneficial Products From Dairy Manure, Environmental Energy Company, Olympia, Wash., Jun. 2001, 54 pages.
Crawford, H.B., and R.J. Kepler (eds.),Chemical Engineers' Handbook, 5th ed., McGraw-Hill, New York, 1973, Chap. 14, “Gas Absorption,” pp. 2-16.
Crawford, H.B., and R.J. Kepler (eds.),Chemical Engineers' Handbook, 5th ed., McGraw-Hill, New York, 1973, Chap. 19, “Gravity Sedimentation Operations,” pp. 44-106.
Heitner, H.I., “Flocculating Agents,”Kirk-Othmer Concise Encyclopedia of Chemical Technology, 4th ed., John Wiley & Sons, New York, 1999, pp. 869-871.
Joshi, J.A., et al., “Gaseous Ammonia Removal in Biofilters: Effect of Biofilter Media on Products of Nitrification,” Department of Environmental Sciences, Rutgers, State University of New Jersey, at least as early as Jun. 1998, 11 pages.
Nicolai, R.E., et al., “Biofilter Demonstration Project: Final Report,” Biosystems and Agricultural Engineering Department, University of Minnesota, Aug. 13, 1999, 9 pages.
Nicolai, R.E., “Biofilter Design Information: BAEU-18,”Biosystems and Agricultural Engineering Department, University of Minnesota Extension Program, Jun. 1998, <http://www.bae.umn.edu/extens/aeu/baeu18.html> [retrieved Dec. 18, 2001], 10 pages.
Nicolai, R.E., et al., “Demonstration Biofilter on Dairy and Swine Facilities,”Biosystems and Agricultural Engineering Department, University of Minnesota, 2000 Annual Report, Feb. 27, 2001 <http://www.bae.umn.edu/annrpt/2000/research/livestock13.html> [retrieved Dec. 18, 2001], 10 pages.
Sadowsky, M., et al., “Final Project Report—Biofilter Microbes,” University of Minnesota, Aug. 8, 1999, 15 pages.
Schmidt, D., et al., “Biofilters for Odor Control,” University of Minnesota Extension Service, 2000, 2 pp.
“Waste Processing and Resource Recovery (WP&RR),”New Jersey—NASA Specialized Center of Research and Training for Bioregenerative Life Support Monthly Report, Jul. 30, 1998, <http:/
j-nscort.rutgers.edu/visitor/rnews
jnscort/Njn-0798.html>[retrieved Dec. 18, 2001], 3 pages.
Yarar, B., “Flotation,”Kirk-Othmer Concise Encyclopedia of Chemical Technology, 4th ed., John Wiley & Sons, New York, 1999, pp. 871-872.
Prince Fred G.
Western Environmental Engineering Company
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