Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 7, 2007
Patent Application Number
10494707
Date Filed
November 7, 2002
Patent Primary Examiner
Patent abstract
A highly reliable detoxifying method of the cyano matters is provided. The waste-liquor, which contains at least one of free cyano material, a cyano complex and a reducing compound exhibiting volatility in alkaline aqueous solution, is heated under an alkaline condition to a temperature range, which lies within a range of from room temperature to the boiling point, and which includes a high temperature range of 80° C. or more, followed by holding the temperature; oxidation-reduction potential of the waste liquor is measured from the room temperature; and, hypochlorite is intermittently or continuously added to the waste liquor from the room temperature, until the oxidation-reduction of the hypochlorite is detected.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
