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| Advanced Oxidation Integrated Technology for Advanced Treatment of Papermaking Wastewater |
| Received:January 05, 2021 |
| DOI：10.11980/j.issn.0254-508X.2021.04.016 |
| Key Words:papermaking wastewater, activated carbon adsorption Fenton oxidation ozone catalytic oxidation |
| Author Name | Affiliation | Postcode | | SUN Yuexin | Department of Mineral Resources and Construction Engineering, Hebei Energy College of Vocation and Techology, Tangshan, Hebei Province, 063004 | 063004 | | WANG Dongdong | Department of Mineral Resources and Construction Engineering, Hebei Energy College of Vocation and Techology, Tangshan, Hebei Province, 063004 | 063004 | | YU Qiang | College of Chemical Engineering, North China University of Science and Technology, Tangshan, Hebei Province, 063210 | 063210 |
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| Abstract:In this study， an advanced oxidation integrated technology of activated carbon adsorption+Fenton oxidation+ozone catalytic oxidation， applied to the treatment of papermaking wastewater was introduced. The results showed that the optimal treatment conditions were as follows： when the amount of activated carbon was 0.5 g/L and the adsorption time was 30 min， the CODCr removal rate could reach 60%； when the effluent was treated by Fenton oxidation process with addition amount of H2O2 was 0.25 g/L， n（Fe2+）：n（H2O2）=1：4， and reaction time was 1.0 h， the CODCr removal rate could reach up to 32%； when the Fenton effluent was further treated by ozone catalytic oxidation， ozone concentration was 10%， H2O2 dosage was 0.1 g/L， gas-liquid ratio was 2：1， and reaction time was 1.0 h， the COD removal effect was the best. This advanced oxidation integrated technology could reduce the CODCr of wastewater from 180 mg/L to 25 mg/L with a removal rate of 86.1%， reaching the surface water level of Ⅳ class， and the integrated operation cost was ¥8.9/t. |
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