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| Optimization Study on Synchronized Oxidation-adsorption Process for High-efficiency Treatment of Pulping and Papermaking Wastewater |
| Received:March 01, 2025 Revised:April 07, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.08.017 |
| Key Words:oxidation-adsorption pulp and paper wastewater response surface methodology |
| Fund Project:重庆市自然科学基金-博士直通车项目（CSTB2023NSCQ-BSX0033）。 |
| Author Name | Affiliation | Postcode | | ZHANG Siwei* | Hunan Chengtong Tianyue Environmental Protection Technology Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | LUO Han* | Hunan Chengtong Tianyue Environmental Protection Technology Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | HU Guang | CISDI Engineering Co., Ltd., Chongqing, 400013 | 400013 |
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| Abstract:In this study， a synchronized oxidation-adsorption process was used to treat the mixed wastewater of pulping and paper making wastewater after biochemical treatment. The effects of H2SO4， H2O2， FeSO4 and Fenton adjuvant on removal of COD and operating cost were investigated. The optimal operating parameters of the process were further explored by Response Surface Methodology (RSM). The results showed that the order of influence of various factors on the treatment efficiency was FeSO4>H2SO4≈Fenton adjuvant>H2O2. The optimal reaction condition was that the dosage of FeSO4 was 7.4 mL/L， the dosage of H2O2 (mass fraction 27.5%) was 0.17 mL/L， the dosage of H2SO4 (3 mol/L) was 2.0 mL/L， the dosage of CPAM was 4 mg/L and the dosage of Fenton adjuvant was 0.245 mL/L. The effluent CODCr predicted by the model was 30 mg/L， while the average effluent CODCr of the verification experiment was 42 mg/L， which was satisfied to the standard GB3544—2008 Discharge Standard of Water Pollutants for Pulp and Paper Industry. The overall operating cost per ton of water had decreased by approximately 14%. |
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