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Combined System of Activated Sludge and Ozonation for the Treatment of Kraft E 1 Effluent

Author

Listed:
  • Marcia Regina Assalin

    (Laboratório de Química Biológica, Instituto de Química, Universidade Estadual de Campinas CP 6154, CEP 13084-971, Campinas, SP, Brazil)

  • Edna dos Santos Almeida

    (Laboratório de Química Biológica, Instituto de Química, Universidade Estadual de Campinas CP 6154, CEP 13084-971, Campinas, SP, Brazil)

  • Nelson Durán

    (Laboratório de Química Biológica, Instituto de Química, Universidade Estadual de Campinas CP 6154, CEP 13084-971, Campinas, SP, Brazil)

Abstract

The treatment of paper mill effluent for COD, TOC, total phenols and color removal was investigated using combined activated sludge-ozonation processes and single processes. The combined activated sludge-O 3 /pH 10 treatment was able to remove around 80% of COD, TOC and color from Kraft E 1 effluent. For the total phenols, the efficiency removal was around 70%. The ozonation post treatment carried out at pH 8.3 also showed better results than the single process. The COD, TOC, color and total phenols removal efficiency obtained were 75.5, 59.1, 77 and 52.3%, respectively. The difference in the concentrations of free radical produced by activated sludge-O 3 /pH 10 and activated sludge-O 3 /pH 8.3 affected mainly the TOC and total phenol removal values.

Suggested Citation

  • Marcia Regina Assalin & Edna dos Santos Almeida & Nelson Durán, 2009. "Combined System of Activated Sludge and Ozonation for the Treatment of Kraft E 1 Effluent," IJERPH, MDPI, vol. 6(3), pages 1-10, March.
    • Handle: RePEc:gam:jijerp:v:6:y:2009:i:3:p:1145-1154:d:4285
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    Cited by:

    1. Ginni Gopalakrishnan & Rajesh Banu Jeyakumar & Adishkumar Somanathan, 2023. "Challenges and Emerging Trends in Advanced Oxidation Technologies and Integration of Advanced Oxidation Processes with Biological Processes for Wastewater Treatment," Sustainability, MDPI, vol. 15(5), pages 1-27, February.

    More about this item

    Keywords

    Activated sludge; ozonation; combined processes; Kraft E1 effluent;
    All these keywords.

    JEL classification:

    • E1 - Macroeconomics and Monetary Economics - - General Aggregative Models

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