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6818581 Method for water denitrification Patent Drawings:
Inventor: Pasquale, et al. Date Issued: November 16, 2004
Application: 10/697,390 Filed: October 30, 2003 Inventors:
Cavalli; Luigi (Novara, IT) Pasquale; Antonio (Novara, IT)
Rossi; Michele (Peschiera Borromeo, IT) Rubini; Carlo (San Fermo
Della Battaglia, IT) Assignee: SUD Chemie MT S.r.l. (Milan, IT)
Primary Examiner: Barry; Chester T. Assistant Examiner: Attorney
Or Agent: Welsh & Katz, Ltd. U.S. Class: 210/615; 210/616; 502/7
Field Of Search: 502/7; 210/615; 210/616; 210/617 International
Class: U.S Patent Documents: 4469599; 4756831; 4970000; 6303368
Foreign Patent Documents: 36 38 301; 195 05 436; 0 359 074; 0
475 540 Other References: Rheinheimer, G. et al.;
"Stickstoffkreislauf im Wasser," 1988, Oldenbourg, Munchen, p.
42, table 2.6 (XP002197930)..  Abstract: A method for
denitrification of water, in which the water to be denitrified
is made to flow over a porous carrier which compris