Method for removing sulphur compounds from water
AssigneePaques B.V.
InventorCees J. N. Buisman
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Abstract
The invention provides a method for removing sulphur compounds from water by anaerobic reduction of the sulphur compounds to sulphide, followed by a partial oxidation of the sulphide to elementary sulphur. The anaerobic reduction is carried out at elevated temperature, either continuously at a temperature of 45.degree.-70.degree. C., or periodically at a temperature of 55.degree.-100.degree. C. If the reduction is carried out periodically, a single rise in temperature for a few hours to several days over a period of 3-6 months can suffice. The method is particularly applicable to the removal of sulphate, sulphite and thiosulphate.
Claims15
Method for removing sulphur compounds from water, which comprises:
- subjecting the water to anaerobic treatment with sulphur- and/or sulphate-reducing bacteria, said anaerobic treatment being carried out at a temperature of above 45.degree. C. for at least a portion of the time.
Method for the treatment of sulphur-containing flue gas, which comprises:
- washing the flue gas with a wash liquid so as to obtain a sulphur-containing water, and regenerating said wash liquid by subjecting the water to anaerobic treatment with sulphur- and/or sulphate-reducing bacteria, said anaerobic treatment being carried out at a temperature of above 45.degree. C. for at least a portion of the time.
Dependencies are inferred from the claim text.