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• US 3,649,533 A
• Filed:
• Issued:
• Est. Priority Date: 02/13/1969
• Status: Expired due to Term

• Current Assignee: Four Seasons Venture Capital AB
• Original Assignee: Four Seasons Venture Capital AB
• Time in Patent Office: Days
• US Class Current: 210/712
• CPC Class Codes: C02F 1/645 Devices for iron precipitation and treatment by air

Abstract

THE PRESENT INVENTION CONCERNS A METHOD FOR PURIFYING WATER DRAWN FROM A GROUND-WATER WELL, MOST SUITABLY FROM A DEEP WELL, FROM IRON BY INTRODUCING IN THE WATER OXYGEN OR AN OXYGEN-RELEASING SUBSTANCE AND BY FILTERING TO REMOVE THE IRON OXIDE WHICH IS PRECIPITATED. THE METHOD IS CHARACTERIZED IN THAT INTO THE GROUND WATER-CARRYING SOIL LAYER SURROUNDING THE WELL FEED WATER IS FED WHICH CONTAINS OXYGEN OR AN OXYGEN-RELEASING SUBSTANCE.

Claims