| 摘要 |
<p>A process for the purification of physiologically-harmful and/or foul- smelling emission in a biological effluent purification plant operating by the activated sludge process which comprises the emission, optionally in combination with air, being blown in under pressure towards the bottom of an aeration tank, without the oxygen content falling below the minimum of approximately 2 mg/l required in the aeration tank for the continuity of the vital processes.</p> |
