Chemical process for the denitrification of water

Details Chemical process for the denitrification of water Chemical process for the denitrification of water

1990-08-22

1991-12-03

Silverman, Stanley S.

Liquid purification or separation

Processes

Chemical treatment

210903, 210749, C02F 170, C02F 158

Patent

active

050698001

ABSTRACT:
A chemical process for the denitrification of water comprising treating water with a metal sufficiently electropositive to decompose the water while regulating the pH within a range effective to permit efficient reduction of nitrate ion. The pH is regulated with alkali in a manner that avoids metal oxide formation and loss of metal by decomposition of water and results in the selective reduction of nitrate ion in the presence of sulfate and chloride ions.

REFERENCES:
patent: 3617579 (1971-11-01), Gunderloy, Jr.
patent: 3673086 (1972-06-01), Drobnik
patent: 4642192 (1987-02-01), Heskett
"Chemical Reduction of Nitrate in Water", Journal WPCF, vol. 36, No. 3, Mar. 1964, pp. 395-398, G. K. Young et al.

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