Process Development in Phenolic Wastewater Treatment

The limitation on the level of phenolic compounds in industrial waste water requires from Nitroclor the treatment of the mother liquors coming from its nitrophenols production unit, previous to sending them to biological treatment. The literature and the accumulated experience during the last years show that nitrophenolic compounds removal at high temperatures is potentially dangerous due to the thermal instability characteristic of these products. It was developed a new process minimizing the thermal risks and recovering nitrophenols with high purity.