| 摘要 |
<p>Quality control method for biologically-processed waste water, characterized in that in parallel with the main process for the active sludge, waste water is processed in a control circuit that consists of an reaction chamber for active sludge and of an clarifying tank, whereas in that clarifying tank, concentration of dissolved oxygen is metered continuously, whereas a part of unprocessed waste water flowing to the aeration chamber is directed to the reaction chamber, whereas retention time in the process chamber is equal to 40-60% of that in the aeration chamber.<IMAGE></p> |
