In the work considered method of treatment of circulating industrial waters from metallurgical works with high content of phosphates, including the treatment of reagent precipitation with alkalization and with addition of flocculant, sedimentation, dehydration of sediment, treatment water from suspension particles in filter with granular loading, softening water in ion-exchange filter, neutralization of clarified and softened water, filtration of water in fine filter and desalting in plant of reverse osmosis.