Department of Biological Environment, Kangwon National University, 192-1 Hyoja-dong, Gangwon-do, Chuncheon-si, 200-701, Republic of Korea.
Department of Biological Environment, Kangwon National University, 192-1 Hyoja-dong, Gangwon-do, Chuncheon-si, 200-701, Republic of Korea.
J Environ Manage. 2021 Feb 1;279:111625. doi: 10.1016/j.jenvman.2020.111625. Epub 2020 Dec 5.
The Fenton oxidation process was applied to biologically treated swine wastewater (BSWW) for the removal of TOC and color constituents after coagulation with FeCl. Optimizing of operational variables such as FeSO and HO doses was achieved by the response surface method (RSM). Statistical analysis led to the conclusion that FeSO is the more important than HO in the removal of TOC. However, HO plays a more significant role than FeSO in color removal. The optimal conditions for effective removal of TOC and color from swine wastewater were derived by using process optimization. The experimental results show that overall removal of TOC and color is 76.7% and 98%, respectively, when optimal conditions of 800 mg/L (FeSO) and 5207 mg/L (HO) at 120 min were used. Furthermore, the optimization model produces a desirability value of 0.980 that verifies the optimal conditions. Finally, it is observed that removal of undesirable compounds follows a pseudo-first order and pseudo-second order kinetics model with high R values of 0.99 for both TOC and color removal, respectively. Statistical analysis and process optimization show that the employed model may determine conditions conducive to the effective removal of TOC and color from swine wastewater.
芬顿氧化法被应用于经生物处理的猪废水中，以去除混凝后 FeCl 中的 TOC 和颜色成分。通过响应面法（RSM）对 FeSO 和 HO 剂量等操作变量进行了优化。统计分析得出结论，FeSO 在去除 TOC 方面比 HO 更重要。然而，HO 在去除颜色方面比 FeSO 更重要。通过工艺优化得出了从猪废水中有效去除 TOC 和颜色的最佳条件。实验结果表明，当使用 800mg/L（FeSO）和 5207mg/L（HO）的最佳条件在 120 分钟内时，TOC 和颜色的总体去除率分别为 76.7%和 98%。此外，优化模型产生了 0.980 的理想值，验证了最佳条件。最后，观察到去除不良化合物遵循准一级和准二级动力学模型，TOC 和颜色去除的 R 值分别高达 0.99。统计分析和工艺优化表明，所采用的模型可以确定有利于从猪废水中有效去除 TOC 和颜色的条件。
