| 摘要 |
A process for clarifying by flocculation a turbid liquid which forms a foam with injected gas and which contains material that, with gas, will form a floatable floc. A gas compatible with the liquid is injected into the liquid in order to form foam atop the body of liquid, and components of a floc within the body of liquid. The liquid after said treatment with gas is permitted to reside quietly so that the floc components form a floatable floc and rise to the surface of the body of liquid. Clarified liquid collects below the floc. Gas for injection into the body of liquid can be withdrawn from a region containing the foam, whereby to recover liquid from the foam, thereby substantially eliminating loss of liquid as foam. |
