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Article

New Technology for Degradation of Wastewater Containing High Concentrations of COD and Boron Based on Manganese-Iron Oxide Catalytic Support

Department of Occupational Safety and Health, Chung Hwa University of Medical Technology, No. 89, Wunhua 1st., Rende Dist., Tainan City 717302, Taiwan
Academic Editor: Laura Bulgariu
Water 2021, 13(21), 3020; https://doi.org/10.3390/w13213020
Received: 9 October 2021 / Revised: 24 October 2021 / Accepted: 25 October 2021 / Published: 28 October 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
The existing methods for simultaneous treatment of wastewater containing high concentrations of chemical oxygen demand (COD) and boron are too cumbersome and require a relatively long treatment time. The traditional oxidation method is easy to cause a large amount of sludge and other secondary pollution. Therefore, in this research, the wastewater was oxidized by the self-synthesized manganese-iron oxide catalytic support. This oxidation and adsorption combined method significantly increased the efficiency of wastewater treatment, reduced the treatment time and the replacement frequency of consumables. The efficiency in degradation of high-concentration COD (25,250 mg/L) was more than 90%, which could be reached within 40 min, while that of boron (500 mg/L) could reach above 95% within 20 min. After optimization of the parameters (daily treatment capacity: 5CMD) was combined to treat high-concentration wastewater containing high concentrations of COD (14,700 mg/L) and boron (486 mg/L), with treatment efficiency approaching 100% within 20 min. As proved by the research results, after being treated by the new manganese-iron oxide catalytic support and activated carbon, the wastewater has reached the emission standard and can be discharged directly. This combined method provides a new way for the treatment of wastewater containing high concentrations of COD and boron. View Full-Text
Keywords: manganese-iron oxide; chemical oxygen demand (COD); boron; catalytic support manganese-iron oxide; chemical oxygen demand (COD); boron; catalytic support
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MDPI and ACS Style

Yang, Y.-F. New Technology for Degradation of Wastewater Containing High Concentrations of COD and Boron Based on Manganese-Iron Oxide Catalytic Support. Water 2021, 13, 3020. https://doi.org/10.3390/w13213020

AMA Style

Yang Y-F. New Technology for Degradation of Wastewater Containing High Concentrations of COD and Boron Based on Manganese-Iron Oxide Catalytic Support. Water. 2021; 13(21):3020. https://doi.org/10.3390/w13213020

Chicago/Turabian Style

Yang, Ya-Fei. 2021. "New Technology for Degradation of Wastewater Containing High Concentrations of COD and Boron Based on Manganese-Iron Oxide Catalytic Support" Water 13, no. 21: 3020. https://doi.org/10.3390/w13213020

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