Author(s)

Ruoyu Zhou, Wenqi Zhang^*

College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China.

The Fenton oxidation process was applied in the treatment of an actual high concentration nonylphenol Ethoxylates (NPEOs) wastewater. The effects of H₂O₂ dosage, molar ratio of H₂O₂/Fe²⁺ (Fe²⁺ dosage), pH value and reaction time on the degradation of NPEOs were investigated. The orthogonal experiment indicated that the order of degree of influence on the COD removal was molar ratio of H₂O₂/Fe²⁺, reaction time, dosage of H₂O₂, and initial pH. The single-factor tests were carried out to determine the optimal conditions, and the results were H₂O₂ dosage of 76.32 mmol/L, molar ratio of H₂O₂/Fe²⁺ of 3, pH value of 5 and reaction time of 2 h. Under the optimum operation conditions, the COD removal efficiency was 85.6% and the effluent could be mixed with other wastewater into the large-scale biological treatment system.

Fenton, Nonylphenol Ethoxylates, Orthogonal Experiment, Single-Factor

Zhou, R. and Zhang, W. (2017) Treatment of the High Concentration Nonylphenol Ethoxylates (NPEOs) Wastewater by Fenton Oxidation Process. American Journal of Analytical Chemistry, 8, 72-80. doi: 10.4236/ajac.2017.81006.