You might also want to ...

You might also want to consider UV with titanium dioxide, or electrolytic oxidation (see http://www.arviatechnology.com/).  (Please note: I have no link to Arvia and this should not be interpreted as an endorsement, but it is an interesting technology!)

The best method for your application will be dependent on the nature of the pharmaceutical effluent, the volume and (importantly!) the variability of the effluent. One method may work for one compound, but if the upstream factory begins production of a different pharmaceutical, removal may be very different! Look at typical constituents in the effluent after biological treatment and how much needs to be removed. Methods like RO, AC and resins are unlikely to be economical for large quantities, unless there's a high value to recycling water via RO. For large quantities, you'll probably want to focus on oxidation methods and ozone is NOT the "only guaranteed method"!