The Fenton reaction is most effective in strong acidic conditions (pH < 1) which usually requires a high dose of mineral acid (usually sulfuric acid) in most industrial wastewaters. This acid needs to be neutralized after the Fenton reaction typically by caustic soda NaOH resulting in high salinity. Along with the ferrous ions from the Fenton reagent, this increases the TDS and EC considerably.
If your objective is to remove turbidity from wastewater, then there are far more efficient alternatives which don't increase the TDS and EC of the wastewater.