Construction of three dimensional electrocatalytic biological aerated filter (TDE-BAF) and its degradation efficiency of ibuprofen
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(1.School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; 2.School of Environment, Harbin Institute of Technology, Harbin 150090, China; 3.Everbright Water (Jinan) Co., Ltd., Jinan 250100, China; 4. CNPC Xibu Drilling Engineering Co., Ltd., Karamay Drilling Company, Karamay 834000, Xinjiang, China; 5.Luoyang Water Conservancy Survey and Design Co., Ltd., Luoyang 471000, He'nan, China; 6.School of Civil Engineering and Architecture, Qilu Institute of Technology, Ji'nan 250022, China)

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X703.1

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    Abstract:

    For conventional wastewater treatment process, the pharmaceutical and personal care products (PPCPs) represented by ibuprofen in municipal wastewater have problems such as weak degradation efficiency, complex structure, and high activation energy. Therefore, based on the internal operational characteristics of biological aerated filter (BAF) and three dimensional electrocatalysis (TDE), a TDE-BAF was constructed to treat ibuprofen in municipal wastewater. Test results revealed that the ibuprofen removal efficiency of TDE-BAF was higher than that of BAF. With water temperature of (21.14±0.05) ℃, COD of (86.82±3.40) mg/L, TOC of (27.56±1.08) mg/L, ibuprofen of (93.2±5.16) μg/L, and ammonia nitrogen of (18.75±2.39) mg/L, the effluent concentrations of ibuprofen were 2.28-9.32 and 57.70-77.12 μg/L, and the average removal rates were 93.48% and 31.89%, which was 61.59% higher than BAF treatment. The removal of ibuprofen by TDE-BAE was mainly in the TDE area (T5-T6), and the removal rate reached 51.78%, accounting for 55.40% of the total removal rate. The mechanism of TDE-BAF degradation of ibuprofen is mainly through the synergistic effect of the TDE and the BAF.

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History
  • Received:July 04,2018
  • Revised:
  • Adopted:
  • Online: July 29,2019
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