| 摘要 |
A method for the removal of sulphate from an aqueous solution and/or suspension. An aqueous solution and/or suspension is heated to a temperature within the range +40°C-+50°C and calcium carbonate is added and mixed into the aqueous solution (1) and/or suspension in an amount which increases the pH of the aqueous solution and/or suspension to the value of 8.4. The aqueous solution and/or suspension is pumped through an electrolytic cell or set of cells (2) provided with an aluminium electrode and aluminium hydroxide is produced in the cell or set of cells by means of an electric current. The precipitate or flock formed is separated from the aqueous solution and/or suspension removed from the cell or set of cells. |
