| 摘要 |
According to the invention, the enclosure (1) contains a granular material (4) having a specific mass less, or respectively greater than that of the liquid to be treated. When the liquid is admitted through an upper inlet line (2), a granular bed is formed at the bottom of the enclosure (1) or at the upper part thereof and the colloidal particles form aggregates there. When the supply of liquid to be treated is interrupted, the granular material rises to the upper, respectively lower, part of the enclosure (1) and releases the aggregates formed, which can be recovered.
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