| 摘要 |
<p>D.N. 2454 CONTINUOUS AERATION-BATCH CLARIFICATION WASTEWATER TREATMENT A single-stage continuous aeration-batch clarification process for purifying wastewater containing pollutants includes the steps of continuously aerating the wastewater in the presence of biologically active solids and powdered adsorbent in an aeration zone. A portion of the mixture of wastewater, biologically active solids and powdered adsorbent is transferred to a settling zone where a settled solids phase and a clarified liquid phase are formed. During the settling step additional wastewater flows into the aeration zone. The clarified liquid phase is discharged from the settling zone while the settled solids phase may be returned to the aeration zone or sent to disposal. The process may be carried out with a single aeration basin and settling basin or with a plurality of aeration basins using a single settling basin.</p> |
