Water treatment by ballasted flocs and degreasing

Details Water treatment by ballasted flocs and degreasing Water treatment by ballasted flocs and degreasing

2007-07-17

2007-07-17

Hruskoci, Peter A. (Department: 1724)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S727000, C210S738000, C210S787000

Reexamination Certificate

active

10467134

ABSTRACT:
The invention concerns the use of a coagulation-flocculation-decantation device for water treatment to degrease water inside the device itself so as to eliminate therefrom more than 20% of hexane-extractable matter without resorting to separate degreasing means by flotation. The invention also concerns a plant comprising a coagulation-flocculation-decantation device by ballasted flocs having a coagulation zone (1), means supplying (4) a granular material denser than water (4), a flocculation (6), a decantation zone (8) and means for recycling (15) granular material including at least a hydrocyclone (17). The characterised in that it does nut comprise degreasing means provided upstream of the coagulation-flocculation-decantation device, the grease being removed from the water inside the coagulation-flocculation-decantation device itself without means for injecting air or an equivalent gas.

REFERENCES:
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patent: 6485652 (2002-11-01), Le Poder et al.
patent: 6645386 (2003-11-01), Moreau et al.
patent: 6824692 (2004-11-01), Binot et al.
patent: 19527290 (1997-01-01), None

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