PRINTING INK WASTEWATER TREATMENT FROM PRINTING PLANT OF INDUSTRIAL UNIVERSITY OF HO CHI MINH CITY BY FENTON’S ADVANCED OXIDATION PROCESS, APPLY FOR 10L/H CAPACITY MODEL

Abstract

The main purpose of this study was to determine optimal operating values such as pH, catalyst dosage, reaction time (or Hydraulic Retention Time-HRT) of advanced oxidation process to efficiency of oxidation on the contaminant from printing ink wastewater. Basic experiments were conducted with printing ink wastewater from Printing plant. The corresponding results show that: optimal operating pH = 3; optimal concentration of H₂O₂ 30% = 2.5ml/250ml of wastewater sample; optimal Fe²⁺ 5% dose = 10ml/250ml wastewater sample; optimal hydrolic retention time = 2.5h. The effect of color, COD removal reached 97.2% and 95.8% respectively. Based on the optimized performance indicators, the author designed the Fenton advanced oxidation model. And it was applied to operate at optimal conditions that can be controlled automatically or manually. The model is designed to get the highest wastewater treatment efficiency in terms of technology and operating cost. This model is applied to printing ink wastewater treatment at the Industrial University of Ho Chi Minh city.