| 摘要 |
<p>Device intended for ensuring the treatment of aqueous effluents, especially rainwater by simultaneously carrying out the degritting, degreasing and settling, which comprises a degritter equipped with a grit chamber, through which passes an upward and then downward flow of the water to be treated, a degreasing surface provided above a part of the degritter and above the feed zone of the settler, and a settler which comprises a feed or presettling tank, a floor, a region for laminar settling and an extraction pit, this device being characterised in that the partition (26) separating the degritter (10) from the settler (14) comprises a flap valve (24) making it possible, when opened, to ensure an unperturbed transfer of the raw water towards the settler and therefore good settling during this stage of filling. <IMAGE></p> |
