Volume 9 Issue 4
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Article Navigation >  Journal of Environmental Engineering Technology  > 2019  >  9(4): 384-388
DU Song. Treatment of organic pollutants in caprolactam wastewater by SBR and electrocatalytic oxidation combined process[J]. Journal of Environmental Engineering Technology, 2019, 9(4): 384-388. doi: 10.12153/j.issn.1674-991X.2019.03.260
Citation: DU Song. Treatment of organic pollutants in caprolactam wastewater by SBR and electrocatalytic oxidation combined process[J]. Journal of Environmental Engineering Technology, 2019, 9(4): 384-388. doi: 10.12153/j.issn.1674-991X.2019.03.260
shu

Treatment of organic pollutants in caprolactam wastewater by SBR and electrocatalytic oxidation combined process

doi: 10.12153/j.issn.1674-991X.2019.03.260

  • 1. China Coal Research Institute, Beijing 100013, China

  • 2. State Key Laboratory of Coal Mining and Clean Utilization, Beijing 100013, China

  • 3. National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China

  • 4. School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China

  • Received Date: 2018-09-19
  • Publish Date: 2019-07-20
    Abstract
  • The removal effect of organic compounds from caprolactam wastewater by Fenton process, SBR and electrocatalytic oxidation was studied, and the pilot of SBR plus electrocatalytic oxidation processes was set up to study the removal efficiency of organic compounds from caprolactam wastewater, the effect stability and the economy. The results showed that the CODCr removal rate by oxidant in Fenton process was 90.0% with the oxidant dosage of 3.0%, but the cost of oxidant was high. The removal rate of CODCr by SBR was 56.1%, and the single process was difficult to meet the processing requirements. The removal rate of CODCr by electrocatalytic oxidation was 43.5% at appropriate energy consumption, the single process was difficult to meet the processing requirements and the unit power consumption was high. The removal rate of CODCr by SBR plus electrocatalytic oxidation combined process was above 90.0% and the effluent CODCr was reduced to 200-300 mg/L, with the treatment cost of 5.15 yuan/m 3, indicating both technically and economically feasible.

     

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