GB2199821A - Method of an arrangement for purifying contamined water - Google Patents

Abstract

Contaminated water is purified by introducing a finite amount of water to be purified into a filter (7), filtering the thus introduced water to obtain partially purified water, accumulating the partially purified water in a confined space (9a) to form a body of water (12) therein, heating (10) the partially purified water to a temperature to and about its boiling point, reintroducing the partially purified water in the same filter, and continuously repeating the filtering, accumulation and heating steps with the partially purified water with attendent further purification of the partially purified water, until the degree of contamination of such water has dropped below a predetermined level. A predetermined portion of the purified water of the body may be distilled (43) subsequent to the completion of the purification operation, and the distilled water is collected (46) in a collecting space (45) for eventual consumption. An arrangement for performing the above method includes a vessel (9) which has a filter (7) arranged at its upper region (20) which bounds an accumulation chamber at its lower region (9a), and a lid (3) which is removably supported on the vessel. An electric resistance heater (10) is arranged either in the accumulation chamber (Fig. 1) or at the exterior of the vessel (Fig. 2), and a riser tube (16), which may have a steam collecting bell at its lower end, rises from the heater to the filter. The vessel may be received in and communicate with a steam condensing receptacle (45) for distilled water (46).