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Treatment of Ammonia Nitrogen Wastewater in Low Concentration by Two-Stage Ozonization

Author

Listed:
  • Xianping Luo

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Western Mining Co., Ltd., Xining 810006, Qinghai, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

  • Qun Yan

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

  • Chunying Wang

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Western Mining Co., Ltd., Xining 810006, Qinghai, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

  • Caigui Luo

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

  • Nana Zhou

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

  • Chensheng Jian

    (School of Resuorces and Environmental Engieering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

Abstract

Ammonia nitrogen wastewater (about 100 mg/L) was treated by two-stage ozone oxidation method. The effects of ozone flow rate and initial pH on ammonia removal were studied, and the mechanism of ammonia nitrogen removal by ozone oxidation was discussed. After the primary stage of ozone oxidation, the ammonia removal efficiency reached 59.32% and pH decreased to 6.63 under conditions of 1 L/min ozone flow rate and initial pH 11. Then, the removal efficiency could be over 85% (the left ammonia concentration was lower than 15 mg/L) after the second stage, which means the wastewater could have met the national discharge standards of China. Besides, the mechanism of ammonia removal by ozone oxidation was proposed by detecting the products of the oxidation: ozone oxidation directly and ·OH oxidation; ammonia was mainly transformed into NO 3 − -N, less into NO 2 − -N, not into N 2 .

Suggested Citation

  • Xianping Luo & Qun Yan & Chunying Wang & Caigui Luo & Nana Zhou & Chensheng Jian, 2015. "Treatment of Ammonia Nitrogen Wastewater in Low Concentration by Two-Stage Ozonization," IJERPH, MDPI, vol. 12(9), pages 1-13, September.
    • Handle: RePEc:gam:jijerp:v:12:y:2015:i:9:p:11975-11987:d:56257
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    References listed on IDEAS

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    1. Bo Li & Jinyang Zhao & Junfu Lu, 2015. "Numerical Study of the Simultaneous Oxidation of NO and SO 2 by Ozone," IJERPH, MDPI, vol. 12(2), pages 1-17, January.
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    Cited by:

    1. Massimo Raboni & Paolo Viotti & Elena Cristina Rada & Fabio Conti & Maria Rosaria Boni, 2020. "The Sensitivity of a Specific Denitrification Rate under the Dissolved Oxygen Pressure," IJERPH, MDPI, vol. 17(24), pages 1-12, December.
    2. Chen Liu & Yunnen Chen & Caiqing He & Ruoyu Yin & Jun Liu & Tingsheng Qiu, 2019. "Ultrasound-Enhanced Catalytic Ozonation Oxidation of Ammonia in Aqueous Solution," IJERPH, MDPI, vol. 16(12), pages 1-15, June.
    3. Aušra Mažeikienė & Julita Šarko, 2022. "Removal of Nitrogen and Phosphorus from Wastewater Using Layered Filter Media," Sustainability, MDPI, vol. 14(17), pages 1-10, August.

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