| 摘要 |
<p>A process for treating water having anions comprising sulphur and oxygen dissolved therein involves subjecting the anions to an anaerobic biological reduction to sulphide anions dissolved in the water, followed by a biological oxidation of the sulphide anions to elemental sulphur suspended in the water. The sulphur is separated from the water. The reduction and oxidation are effected together in a common reaction stage in which there are oxidizing conditions which permit the biological oxidation without preventing the biological reduction.</p> |
