Technology of Water Treatment, Volume. 51, Issue 8, 123(2025)

Rapid Preparation of Manganese Oxide Membrane Filter Media And Treatment of Micro-Polluted Water Study

YANG Hui, LIU Yuzheng*, and DONG Meiling
Author Affiliations
  • School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
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    In order to rapidly prepare the filter media loaded with manganese oxide membrane, zeolite modified with sodium dodecyl sulfate (SLS) solution was used as the carrier, and the membrane hanging solution was used to rapidly load the manganese oxide membrane on the modified zeolite filter column, and the effects of the initial concentration and filtration rate on the effect of the column on the removal of NH4+ and Mn2+ were investigated. The results showed that 200mg/L Mn2+ solution and 0.01 mol/L KMnO4 solution were periodically run to dynamically load the membrane on the column, and the membrane was successfully loaded on the 7th day, and the concentrations of NH4+ and Mn2+ in the effluent water were 0.199 mg/L and 0.066 mg/L, which were lower than the limit values of NH4+ and Mn2+ in the "Hygiene Standard for Drinking Water" (GB 5749-2022). The removal rate of Mn2+ was 98.4%~96.7% when the concentration of NH4+ inlet water was 2 mg/L, and 49.5% when the concentration of NH4+ inlet water was 3~8 mg/L. The removal rate of Mn2+ was 97.6%~89.5% when the concentration of Mn2+ inlet water was 1~8 mg/L. The inhibition effect of initial concentration of NH4+ on the removal of Mn2+ was significant, and the removal rate of Mn2+ was 0.066, 0.199, 0.066 mg/L, which was lower than that of NH4+ and Mn2+ in GB 5749-2022. The initial concentration of NH4+ had a significant inhibitory effect on the removal of Mn2+, and the initial concentration of Mn2+ had no effect on the removal of NH4+. The effluent NH4+ and Mn2+ concentrations were 0.25 mg/L and 0.088 mg/L, respectively, when the controlled filtration rate was 4 m/h. By comprehensive characterization of natural zeolite, modified zeolite, and membrane-hanging zeolite, the results showed that the modification of the natural zeolite by SLS was successful in improving the adsorption effect of the zeolite on Mn2+, and realizing a large amount of accumulation of Mn2+ on the surface of the zeolite. The main components of the manganese oxide film are Mn3O4 and MnO2, which have oxidizing effects on NH4+ and Mn2+.

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    YANG Hui, LIU Yuzheng, DONG Meiling. Rapid Preparation of Manganese Oxide Membrane Filter Media And Treatment of Micro-Polluted Water Study[J]. Technology of Water Treatment, 2025, 51(8): 123

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    Paper Information

    Category:

    Received: Jul. 30, 2024

    Accepted: Aug. 22, 2025

    Published Online: Aug. 22, 2025

    The Author Email: LIU Yuzheng (liuyuzheng1999@163.com)

    DOI:10.16796/j.cnki.1000-3770.2025.08.019

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