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| Kinetics of Advanced Treatment of Papermaking Wastewater with Oxidation by Fenton′s Reagent |
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| DOI：10.11980/j.issn.0254-508X.2018.04.004 |
| Key Words:Fenton papermaking wastewater CODCr removal advanced treatment kinetics |
| Fund Project:陕西省重点研发计划（2017ZDXM-SF-096）; 陕西科技大学博士启动基金项目（BJ14-05）。 |
| Author Name | Affiliation | | LUO Qing1 | 1.College of Light Industry Sciences and Engineering,National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science ＆ Technology,Xi′an, Shaanxi Province, 710021 | | XIE Fei2，* | 2.College of Environmental Sciences and Engineering,Shaanxi University of Science ＆ Technology,Xi′an, Shaanxi Province, 710021 | | ZHANG An-long2 | 2.College of Environmental Sciences and Engineering,Shaanxi University of Science ＆ Technology,Xi′an, Shaanxi Province, 710021 | | CHANG Mei-juan1 | 1.College of Light Industry Sciences and Engineering,National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science ＆ Technology,Xi′an, Shaanxi Province, 710021 | | MA Rui2 | 2.College of Environmental Sciences and Engineering,Shaanxi University of Science ＆ Technology,Xi′an, Shaanxi Province, 710021 | | CHENG Bing-jun3 | 3.The Paper Environmental Protection Institute of Shaanxi University of Science and Technology,Xi′an, Shaanxi Province,710021 | | REN Ge-jian4 | 4.Weifeng Paper Co., Ltd.,Xi′an, Shaanxi Province,710301 |
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| Abstract:Advanced treatment wastewater from papermaking using deinked pulp as raw material was studied with the oxidation-flocculation method by Fenton′s reagent as oxidant and PAM as flocculant， and the oxidation mechanism and kinetics were analyzed. According to the results from a series of single-factor experiments， it was found that the various influence factors in the oxidation process had different effects on CODCr removal efficiency. From the experimental results， a desirable CODCr removal rate of 55.1% was obtained after oxidation-flocculation at FeSO4 dosage 0.5 g/L， molar ratio n(H2O2)∶n(Fe2+)=1.5∶1， initial pH=3.0 and reaction time t=35 min. A multi-factor kinetic of oxidation process analysis was carried out by using first-order model reaction rate constant k was expressed as k=0.273［H2O2］-0.067［Fe2+］0.594 through multiple regression analysis. |
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