The applicability of an electrochemical Fenton-type process (EF-HOCl-ReFe) to the treatment of three actual wastewaters, namely wastewater from an automobile factory (automobile wastewater), metal scrap-cleansing wastewater, and municipal wastewater, is discussed in this research. The EF-HOCl-ReFe successfully removed the chemical oxygen demand (COD) from automobile wastewater pre-treated by a coagulation process without any inhibition. The apparent current efficiency reached 86%, 46% of which was ascribed to the electrochemical Fenton-type mechanism. The metal scrap-cleansing wastewater had a yellow colour and high concentrations of COD (6550 mg/L) and Cl− (1560 mM). The EF-HOCl-ReFe could achieve almost complete COD removal and decolourization after 48 h of treatment, although a temporary intensification of colour was observed before the decolourization. The EF-HOCl-ReFe was also effective in the removal of 1,4-dioxane from municipal wastewater pre-treated by activated sludge and coagulation processes, which were unable to remove 1,4-dioxane. The 1,4-dioxane removal efficiency after 30 min of treatment reached 68.5%. Thus, the EF-HOCl-ReFe was applicable to the treatment of these actual wastewaters.
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Research Article|
June 04 2015
Applicability of an electrochemical Fenton-type process to actual wastewater treatment Available to Purchase
Naoyuki Kishimoto;
1Faculty of Science and Technology, Ryukoku University, 1-5 Yokotani, Setaoe-cho, Otsu 520-2194, Japan
E-mail: [email protected]
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Takuya Kitamura;
Takuya Kitamura
2Graduate School of Science and Technology, Ryukoku University, 1-5 Yokotani, Setaoe-cho, Otsu 520-2194, Japan
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Yu Nakamura
Yu Nakamura
2Graduate School of Science and Technology, Ryukoku University, 1-5 Yokotani, Setaoe-cho, Otsu 520-2194, Japan
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Water Sci Technol (2015) 72 (6): 850–857.
Article history
Received:
February 01 2015
Accepted:
May 19 2015
Citation
Naoyuki Kishimoto, Takuya Kitamura, Yu Nakamura; Applicability of an electrochemical Fenton-type process to actual wastewater treatment. Water Sci Technol 1 September 2015; 72 (6): 850–857. doi: https://doi.org/10.2166/wst.2015.279
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