发明名称 |
VERFAHREN ZUR BIOLOGISCHEN REINIGUNG VON ABWASSER UNTER ZURÜCKHALTUNG VON SCHLAMM |
摘要 |
<p>A process for biological purification of waste water by the activated sludge method wherein the waste water is continuously passed through one or more treatment zones and a clarification zone, wherein the waste water treated in the last treatment zone at the outlet from the zone under suitable control of aeration and stirring is continuously divided into a predominantly aqueous fraction and a sludge-containing fraction, and wherein a portion of the sludge fraction is recirculated and mixed with non-treated waste water, of which the former is subjected to clarification, and the latter is recirculated to the same or a preceding treatment zone.</p> |
申请公布号 |
DE69807250(D1) |
申请公布日期 |
2002.09.19 |
申请号 |
DE1998607250 |
申请日期 |
1998.09.16 |
申请人 |
KRUEGER A/S, SOBORG |
发明人 |
NIELSEN, MARINUS;DAHL, POULSEN |
分类号 |
C02F3/12;C02F3/30;(IPC1-7):C02F3/12 |
主分类号 |
C02F3/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|