| 摘要 |
<p>A process improves the oxygen take-up in an aero-biological process, especially the aeration of water in a waste water treatment plant. The water is first filtered and pre-aerated before introduction into a basin in which the main aeration process takes place. Additionally or alternatively, treated water overflowing from the basin is filtered. Additionally or alternatively, the filtrate, permeate, concentrate and retentate are returned to the basin. An independent claim is also included for an assembly with a water treatment aeration basin from which sludge is removed at intervals and water discharges via an overflow weir. Prior to its admission to the basin, water is pre-treated by a Phase 1 treatment unit incorporating a filter (12, 14) and/or an aeration device employing ambient air.</p> |
