| 摘要 |
<p>A METHOD OF BIOLOGICALLY CLEANING POLLUTED WATER USES ACTIVE SLUDGE AND AT LEAST THREE ZONES, WHERE AT LEAST ONE ZONE OPERATES AS A BIOLOGICAL TREATMENT ZONE AND AT LEAST TWO ZONES VARIABLY OPERATE AS A BIOLOGICAL TREATMENT ZONE AND AS A CLARIFYING ZONE (ZONES 1 AND 3 RESPECTIVELY). BY THIS METHOD, THE POLLUTED WATER IS FED TO A ZONE OPERATING AS A PERMANENT BIOLOGICAL TREATMENT ZONE (ZONE 2), WHERE A BACK-MIXING IS PERFORMED DURING A PERIOD BETWEEN THIS ZONE AND A ZONE VARIABLY OPERATING AS A BIOLOGICAL TREATMENT ZONE AND WHICH HAS OPERATED AS A CLARIFYING ZONE DURING A PREVIOUS PERIOD. AS A RESULT THE DRAW-BACKS ARE OVERCOME WHICH THE KNOWN T AND V-CHANNEL METHODS ARE ENCUMBERED WITH. (FIGURE 2)</p> |
