| 摘要 |
<p>1. Apparatus for the biological purification of waste water, comprising a reactor having a supply line for the waste water to be treated, a discharge line for treated waste water, a sludge supply line and at least one aerating device and wherein the bio-mass settles on a carrier material, characterized in that the aerating device (2, 14) is assigned means (3, 16) for restraining carrier material, a section of the reactor (10) is separated to form a zone free from carrier material by the means (16) for restraining carrier material, and the volume of the zone (17) which is free from carrier material, is 10 to 20 % of the total volume of the reactor (10).</p> |
