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Advanced Treatment of Papermaking Wastewater by Heterogeneous Fenton Process with Iron Sludge-based Catalyst
Received:November 04, 2021  
DOI：10.11980/j.issn.0254-508X.2022.05.001
Key Words:Fenton treatment  sludge  iron sludge-based catalyst  heterogeneous Fenton  papermaking wastewater
Author NameAffiliationPostcode
LUO Qing* College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
XUE Wei College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
ZHANG Anlong School of Environmental Science and Engineering，Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
ZONG Xiaoning College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
JING Tianhao College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
SONG Gang Ningxia Brothers Packaging Materials Co.， Ltd.， Wuzhong， Ningxia Hui Autonomous Region， 751102 751102
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Abstract:Iron sludge-based catalysts were prepared via high temperature pyrolysis， with sludge from papermaking wastewater treated by Fenton oxidation as raw material， and compounded with fly ash， coal sludge and sodium carboxymethyl cellulose. The effects of iron sludge-based catalyst on the treatment of wastewater during heterogeneous Fenton advanced treatment were studied with effluent of secondary sedimentation tank of waste papermaking as the target pollutant， and CODCr removal rate and color removal rate as the evaluation indexes. The results showed that the specific surface area of iron sludge-based catalyst was 230 m2/g. When the initial pH value of the reaction system was 2.5， the dosage of catalyst was 15 g/L， m（CODCr）∶m（H2O2） was 1∶1.5， and the reaction time was 100 min， the removal rate of CODCr was 66.7%， the removal rate of color was higher than 80%， and the sludge yield was 91%~94% lower than that of homogeneous Fenton.
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