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Application of Advanced Oxidation Technology in Sludge Conditioning and Dewatering: A Critical Review

Author

Listed:
  • Jiahua Xia

    (Nanjing Jiangbei New Area Public Utilities Holding Group Co., Ltd., Nanjing 210044, China)

  • Juan Ji

    (Nanjing Jiangbei New Area Public Utilities Holding Group Co., Ltd., Nanjing 210044, China)

  • Zhiqiang Hu

    (Nanjing Jiangbei New Area Public Utilities Holding Group Co., Ltd., Nanjing 210044, China)

  • Ting Rao

    (Nanjing Jiangbei New Area Public Utilities Holding Group Co., Ltd., Nanjing 210044, China)

  • Ankang Liu

    (Nanjing Water Purification Environmental Research Institute Co., Ltd., Nanjing 211100, China)

  • Jingqian Ma

    (College of Urban Construction, Nanjing Tech University, Nanjing 211800, China)

  • Yongjun Sun

    (College of Urban Construction, Nanjing Tech University, Nanjing 211800, China)

Abstract

Sludge dewatering is an important link in sludge treatment. In practical engineering, the dewatering effect of unconditioned sludge is very poor. The use of advanced oxidation technology can improve sludge dewatering performance, reduce sludge capacity, and remove micro-pollutants, which is beneficial for sludge post-treatment and disposal. Based on the current status of sludge conditioning and dehydration, the characteristics of the advanced oxidation method for sludge dehydration were systematically explained using various free radical reaction mechanisms and dehydration conditions. The effects of various advanced oxidation technologies on sludge conditioning and dewatering has been extensively discussed. Finally, the application prospects of the advanced oxidation technology in sludge conditioning and dewatering are presented.

Suggested Citation

  • Jiahua Xia & Juan Ji & Zhiqiang Hu & Ting Rao & Ankang Liu & Jingqian Ma & Yongjun Sun, 2022. "Application of Advanced Oxidation Technology in Sludge Conditioning and Dewatering: A Critical Review," IJERPH, MDPI, vol. 19(15), pages 1-14, July.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:15:p:9287-:d:875167
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    References listed on IDEAS

    as
    1. Beata Bień & Jurand D. Bień, 2022. "Analysis of Reject Water Formed in the Mechanical Dewatering Process of Digested Sludge Conditioned by Physical and Chemical Methods," Energies, MDPI, vol. 15(5), pages 1-14, February.
    2. Michela Langone & Daniele Basso, 2020. "Process Waters from Hydrothermal Carbonization of Sludge: Characteristics and Possible Valorization Pathways," IJERPH, MDPI, vol. 17(18), pages 1-33, September.
    3. Jiahua Xia & Ting Rao & Juan Ji & Bijuan He & Ankang Liu & Yongjun Sun, 2022. "Enhanced Dewatering of Activated Sludge by Skeleton-Assisted Flocculation Process," IJERPH, MDPI, vol. 19(11), pages 1-17, May.
    4. Beata Bień & Jurand D. Bień, 2021. "Conditioning of Sewage Sludge with Physical, Chemical and Dual Methods to Improve Sewage Sludge Dewatering," Energies, MDPI, vol. 14(16), pages 1-14, August.
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