| 摘要 |
The invention pertains to a method for treating water in order to make it drinkable or desalinated, said method comprising at least one cycle for treating said water comprising:
a step of coagulation and/or flocculation;a step of flotation, within a flotation reactor (29), of the water coming from said step of coagulation, followed or not followed by a step of flocculation;a step of gravity filtration, within a gravity filter (33), of the water coming from said step of flotation, said flotation reactor (29) being at least partly superimposed on said gravity filter (33),
and at least one cycle for washing said gravity filter comprising a step for backwashing said gravity filter,
characterized in that said step of gravity filtration is carried out at a speed of 10 m/h to 30 m/h, said gravity filter having a bed of filtering material (330) distributed on a height of 1.5 m to 3.0 m. |
