第一作者：Zheng-Yu Dong
通讯作者：徐斌 教授
通讯单位：同济大学环境科学与工程学院
DOI:10.1016/j.watres.2022.119200
Fig. 1. Water quality variation in the different processes: (a) DOC removal efficiency in the RW and HA solution; (b) turbidity removal and zeta potential variation in the RW. Conditions: [Mn(VII)] = 0.4 mg/L, [Fe(III)] = 80 μM, [PMS] = 50 μM, pH = 7.6, and temperature = 25 ± 1 °C.
Fig. 2. The SEC spectra of RW before and after Fe(III) coagulation, Fe(III)/PMS and Mn(VII)-Fe(III)/PMS processes. Conditions: [Mn(VII)] = 0.4 mg/L, [Fe(III)] = 80 μM, [PMS] = 50 μM, pH = 7.6, and temperature = 25 ± 1 °C.
Fig. 3. The degradation of (a) IHX and (b) SMX by different processes in the RW. Conditions: [Mn(VII)] = 0.4 mg/L, [Fe(III)] = 80 μM, [PMS] = 50 μM, [IHX] = [SMX] = 5 μM, [MeOH] = [TBA] = 10 mM, pH = 7.6, and temperature = 25 ± 1 °C.
Fig. 4. The XPS spectra of (a) Fe and (b) Mn in flocs after Mn(VII)-Fe(III)/PMS process in the RW. Conditions: [Mn(VII)] = 0.4 mg/L, [Fe(III)] = 80 μM, [PMS] = 50 μM, pH = 7.6, and temperature = 25 ± 1°C.
Scheme 1. Proposed mechanism for the degradation of DOM and micropollutant during the Mn(VII)-Fe(III)/PMS process.
Fig. 5. Formation of DBPs after different processes in the RW and HA solution. Conditions: [Mn(VII)] = 0.4 mg/L, [Fe(III)] = 80 μM, [PMS] = 50 μM, pH = 7.6, and temperature = 25 ± 1 °C.
Dong, Z.Y., Lin, Y.L., Zhang, T.Y., Hu, C.Y., Pan, Y., Pan, R., Tang, Y.L., Xu, B., Gao, N.Y., 2022. Enhanced coagulation and oxidation by the Mn(VII)-Fe(III)/peroxymonosulfate process: Performance and mechanisms. Water Res 226, 119200.
https://doi.org/10.1016/j.watres.2022.119200.
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