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Treatment of the High Concentration Nonylphenol Ethoxylates (NPEOs) Wastewater by Fenton Oxidation Process
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 1 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 2 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
American Journal of Analytical Chemistry·Volume 08 (2017)·Pages 72–80·Published 4 January 2017·DOI10.4236/ajac.2017.81006
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Abstract
The Fenton oxidation process was applied in the treatment of an actual high concentration nonylphenol Ethoxylates (NPEOs) wastewater. The effects of H 2 O 2 dosage, molar ratio of H 2 O 2 /Fe 2+ (Fe 2+ 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 H 2 O 2 /Fe 2+ , reaction time, dosage of H 2 O 2 , and initial pH. The single-factor tests were carried out to determine the optimal conditions, and the results were H 2 O 2 dosage of 76.32 mmol/L, molar ratio of H 2 O 2 /Fe 2+ 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.
KeywordsFentonNonylphenol EthoxylatesOrthogonal ExperimentSingle-Factor
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