Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1976-03-17
1980-02-05
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
210 32, 210 40, 252415, B01J 2120, B01D 1506
Patent
active
041871952
ABSTRACT:
A method for reactivating carbon beds is provided which is applicable to carbon beds used in purifying industrial wastes such as filtering water recovered from sewage. The method involves first adding either hydrochloric acid or a hydroxide of an alkali metal to the bed containing some of the water. The water and hydrochloric acid or alkali metal hydroxide are thoroughly mixed to distribute the acid or hydroxide throughout the carbon bed. The mixture of acid or hydroxide and water is retained in the carbon bed for sufficient time to reactivate the carbon. Thereafter the acid or hydroxide and water are removed from the carbon bed.
REFERENCES:
patent: 3965036 (1976-06-01), Himmelstein
patent: 3965037 (1976-06-01), Kennedy
Advanced Waste Water Treatment-1971, Culp & Culp, pp. 163-164, Van Norstrand Reinhold Co., N.Y.
Konopka P. E.
Pope III John D.
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