| 摘要 |
<p>PCT No. PCT/AT94/00108 Sec. 371 Date Apr. 10, 1996 Sec. 102(e) Date Apr. 10, 1996 PCT Filed Aug. 5, 1994 PCT Pub. No. WO95/05230 PCT Pub. Date Feb. 23, 1995There are described a method of and an apparatus for removing sand from waste water loaded with sand and organic substances which is set forth in circulation in a vertical container (1) in which the organic substance moves upward to an overflow (13), while the sand sinks downward toward a discharge conveyor (3) connected to the container (1) from beneath, and is discharged after a certain settling period. To achieve a substantial separation of the sand and the organic substances, the settled sand is stirred by an agitator, with simultaneous rinsing with fresh water delivered to the container bottom region, and is discharged in an amount, which insures a predetermined minimal height of the settled sand.</p> |
