| 摘要 |
<p>A device for purifying wastewater, with a conversion space (16; 116), aeration and agitation means (10, 12, 18; 110) for aerating and agitating a water-sludge suspension in the conversion space (16; 116), a deposition space (20; 120; 320) for depositing sludge in the deposition space (20; 120; 320), and a water drain (21) with an inlet (25; 325) in the deposition space (20; 120; 320) for draining purified water from the deposition space (20; 120; 320). Because the device is further provided with a rising substance drain (10, 12, 18, 26; 226; 326) with an inlet in the deposition space (20; 120; 320) at a level above the inlet (25; 325) of the water drain (21) for draining rising substance from the deposition space (20; 120; 320), the formation of a blanket or cake of the rising substance in the deposition space (20; 120; 320) is prevented. A method for achieving this effect is also described.</p> |
