Chemical method for destruction of pathogenic organisms in water

Details Chemical method for destruction of pathogenic organisms in water Chemical method for destruction of pathogenic organisms in water

1996-11-24

1998-08-11

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

210759, 210764, C02F 150, C02F 172

Patent

active

057923701

ABSTRACT:
A Method for destruction of pathogenic organisms in water is described. When used in conjunction with a rough filtration prior to chemical treatment, the method purifies drinking water for consumption by humans. The method is based on the well-known ability of alkaline solutions to kill micro-organisms. The method uses dry pellets of either sodium hydroxide (NaOH) or potassium hydroxide (KOH). These are added to the water in proper proportion. The resulting alkaline solution is allowed to stand for a short period of time, typically one hour or more. And then the resulting solution is neutralized by the addition of an edible acid, such as citric or tartaric acid. The resulting water has a more or less neutral pH, and does not have an unpleasant taste.

REFERENCES:
patent: 4265847 (1981-05-01), Hunt et al.
patent: 4469614 (1984-09-01), Martin
patent: 4536389 (1985-08-01), White et al.
patent: 5008106 (1991-04-01), Merianos et al.
patent: 5741520 (1998-04-01), DeSenna

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