The invention discloses a device and method for treating high-
fluorine-content water produced by an
oil well and a
coal-
bed gas well. The device is characterized in that the high-
fluorine-content water enters a primary
fluoride removal device through a water pump A by an automatic
pH control liquid
adding machine and then simultaneously and equivalently flows into a secondary
fluoride removal device A and a secondary
fluoride removal device B, namely the two secondary fluoride removal devices are connected in parallel to run; when the content of
fluorine in
effluent does not reach the standards, the primary fluoride removal device, the secondary fluoride removal device A and the secondary fluoride removal device B are connected in series to run; when the content of the fluorine in the
effluent still does not reach the standards, an
alumina activation and regeneration unit and the primary fluoride removal
device form a circulation loop to regenerate a fluoride removal filler, and meanwhile, the two secondary fluoride removal devices are regenerated; the high-fluorine-content water is discharged after reaching the standards. According to the device and the method disclosed by the invention, two adsorbents, namely
activated aluminum oxide and a carbon
ceramic composite material are combined during the use, advantages are enhanced, and disadvantages are avoided, so that the fluorine removal effect is effectively improved; the device is simple in structure, automatic in running and convenient to maintain and manage and reduces the running cost.