Water denitrification process using air stripping (REC-3603)

Details Water denitrification process using air stripping (REC-3603) Water denitrification process using air stripping (REC-3603)

1997-07-22

1999-01-26

Wyse, Thomas G.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210750, 210757, 210903, C02F 170

Patent

active

058634444

ABSTRACT:
A water denitrification process is provided which comprises stopping the reduction of nitrate at nitrite, lowering the pH of the water, and then gas stripping the nitrite out of the water by using air as the gas in a sparger. This allows considerable savings to be realized based on the reduced chemical removal costs as compared to other water denitrification processes.

REFERENCES:
patent: 3617579 (1971-11-01), Gunderloy, Jr. et al.
patent: 4402836 (1983-09-01), Fochtman et al.
patent: 4439326 (1984-03-01), Heilgeist
patent: 4447333 (1984-05-01), Wagener et al.
patent: 5635077 (1997-06-01), Stultz et al.

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