Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-10-15
1977-08-02
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 16, 210 17, 210 18, 210DIG28, C02C 510
Patent
active
040394387
ABSTRACT:
There is disclosed a process for biological denitrification of nitrate containing waters, particularly agricultural drain waters, sewage effluents, ground waters and the like by contacting the water with a solid cellulosic substrate comprised chiefly of paper or paper pulp in the presence of anaerobic bacteria in an active growth phase to reduce the nitrate content of the water by biological oxidation of the substrate.
REFERENCES:
patent: 1933227 (1933-10-01), Snyder et al.
patent: 2528403 (1950-10-01), West
patent: 3574098 (1971-04-01), Boorujy
patent: 3709364 (1973-01-01), Savage
patent: 3778349 (1973-12-01), Carta
Beck et al.; "Methods of Removing Nitrates from Water", J. Agr. Food Chem.; vol. 18, No. 5, (1970), pp. 785-788.
Castel Benoit
Wyse Thomas G.
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