The main objective of this work is to compare various Advanced Oxidation Processes based on solar photo-Fenton at circumneutral pH (by adding EDDS as iron complexing agent), such as solar photo-electro-Fenton process and solar ozonation in combination with Fenton like processes (O-3/Fe2+/H2O2, O-3/Fe3+/H2O2 and Solar/Fe3+/O-3/H2O2), for the elimination of four microcontaminants (MCs) (Terbutryn, chlorfenvinphos, pentachlorophenol and diclofenac) at 200 mu g/L each and in different water matrices. These compounds were selected as Priority Substances listed in European Commission directives (2013/39/EC and 2008/105/EC Directives). Research was carried out at pilot plant scale in a 30 L electrochemical system (cells made by an anode of boron-doped diamond thin film on a niobium mesh (Nb-BDD) and a carbon-polytetrafluoroethylene (PTFE) GDE as the cathode), a 20 L ozone reactor and three different solar photoreactors (39 L, 45 L and 120 L) based on compound parabolic collectors (CPC) and connected to the non-solar oxidation systems. Results showed successful elimination of at least 80% of MCs for all the technologies tested. However, solar photo-Fenton at circumneutral pH showed better performance than solar photo-electro-Fenton and even electro-Fenton processes. In addition, the combination of ozone with solar radiation showed promising results since almost a complete elimination of MCs was attained with a significant lower ozone consumption than when applying ozone in the dark (with or without the assistance of Fenton's reagent).