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SHI Yu, YANG Xiaofang, YANG Zhaoyi, WANG Dongsheng, ZHAO Chaocheng. Organic pollutant removal from high-salinity wastewater by coagulation-Fenton integrated process[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4958-4964. doi: 10.12030/j.cjee.201701090
Citation: SHI Yu, YANG Xiaofang, YANG Zhaoyi, WANG Dongsheng, ZHAO Chaocheng. Organic pollutant removal from high-salinity wastewater by coagulation-Fenton integrated process[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4958-4964. doi: 10.12030/j.cjee.201701090
shu

Organic pollutant removal from high-salinity wastewater by coagulation-Fenton integrated process

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy Sciences, Beijing 100085, China

  • 2.

    College of Chemical Engineering, China University of Petroleum(East China), Qingdao 266580, China

  • 3.

    Beijing Zhongke Global Water Technology Company, Beijing 100085, China

  • Received Date: 08/03/2017
    Accepted Date: 13/01/2017
    Available Online: 26/08/2017
    Fund Project:
  • The removal of organics from high salinity epoxy resin manufacturing wastewater by coagulation and Fenton processes was investigated and compared. The effects of initial pH value, Fenton's reagent or coagulant dosage and reaction time on organics removal were investigated during the oxidation and coagulation processes. Results showed that the optimum conditions for Fenton oxidation were obtained at pH=3 and the mole ratio of Fenton's reagent was n(Fe2+)/n(H2O2)=1:20, Fe2+ dosage of 25 mmol·L-1, and H2O2 dosage of 500 mmol·L-1. The maximum removal efficiency for TOC by Fenton oxidation was 62.50% after 120 min reaction. The removal efficiency of TOC by coagulation process was 23.78% with 300 mg·L-1dosage of FeSO4. The removal efficiencies of TOC in different Fenton and coagulation integrated processes, namely Fenton-coagulation (without addition of coagulant) process, Fenton-coagulation process, coagulation-Fenton oxidation and coagulation-two staged Fenton oxidation process, were 68.32%,71.51%,80.69% and 89.27%, respectively.
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Organic pollutant removal from high-salinity wastewater by coagulation-Fenton integrated process

  • Received Date: 08/03/2017
  • Accepted Date: 13/01/2017
  • Available Online: 26/08/2017
Fund Project:

Abstract: The removal of organics from high salinity epoxy resin manufacturing wastewater by coagulation and Fenton processes was investigated and compared. The effects of initial pH value, Fenton's reagent or coagulant dosage and reaction time on organics removal were investigated during the oxidation and coagulation processes. Results showed that the optimum conditions for Fenton oxidation were obtained at pH=3 and the mole ratio of Fenton's reagent was n(Fe2+)/n(H2O2)=1:20, Fe2+ dosage of 25 mmol·L-1, and H2O2 dosage of 500 mmol·L-1. The maximum removal efficiency for TOC by Fenton oxidation was 62.50% after 120 min reaction. The removal efficiency of TOC by coagulation process was 23.78% with 300 mg·L-1dosage of FeSO4. The removal efficiencies of TOC in different Fenton and coagulation integrated processes, namely Fenton-coagulation (without addition of coagulant) process, Fenton-coagulation process, coagulation-Fenton oxidation and coagulation-two staged Fenton oxidation process, were 68.32%,71.51%,80.69% and 89.27%, respectively.

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