| 摘要 |
<p>The invention relates to a device (1) for the biological purification of a waste fluid (17), in particular waste water, the device (1) comprising a first, second and third compartment (10, 20, 30) for receiving the waste fluid (17), each compartment (10, 20, 30) containing an aerating device (2, 2', 2") for aerating the waste fluid (17), adjacent compartments being connected to each other to allow the liquid to flow from one compartment to the other, the first and third compartment (10, 30) each containing an inlet (13, 33) for influent waste liquor and an outlet (14, 34) for effluent purified liquid (18), the first and third compartment (10, 30) being provided to alternately function as aeration compartment for aerating the waste fluid and settling compartment to allow activated sludge (16) to settle and separate from the purified liquid (18), whereby the first, second and third compartment (10, 20, 30) are sequentially arranged in a circular configuration, the first and third compartment (10, 30) comprising a plurality of gravitational settling devices (3, 4) for increasing the settling surface for the activated sludge (16).</p> |
