The effectiveness of TNT yellow wastewater treatment by using Photo-Fenton process
Abstract
The purpose of this study is to evaluate the effectiveness of TNT yellow wastewater treatment by using Photo-Fenton process. The optimization of photo-fenton process was also evaluated by different condition of H2O2 dosage, ferrous dosage, pH condition. Treatment efficiency was determined by comparing the reduction of COD index, TNT concentration and Color index in the wastewater. The results showed that, after 120 min of treatment, the concentration of COD in the wastewater decreased by 82,71%, TNT concentration by 97,70% and Color index by 92,6% while the optimal condition for treating 1 liter of TNT wastewater is by pH=3, UV light wavelenght λ=254 nm, 7,19x10 -3M Fe2+ and molar ratio of H2O2/Fe2+= 20. The research results are an important basis for selecting the technological process, choosing the optimal conditions to treat each organic substance and the mixture of organic substances present in TNT yellow wastewater.
