Study on the Factors Affecting the Start-Up of Iron-Manganese Co-Oxide Filters for Ammonium and Manganese Removal from Groundwater

International Journal of Environmental Research and Public Health
Ya ChengJunbin Wu

Abstract

The high concentration of ammonium (NH₄⁺-N) and manganese (Mn2+) in underground water poses a major problem for drinking water treatment plants. Effective catalytic oxidative removal of NH₄⁺-N and Mn2+ by iron-manganese co-oxide film (MeOx) filters was first developed by our group in a previous study. In this study, several identical pilot-scale filters were employed to optimize the start-up process for simultaneous removal of NH₄⁺-N and Mn2+ from potable water supplies. Experiments were conducted to assess the influence of Mn2+ concentration, Fe2+ concentration, filtration rate and dosing time on the start-up period of the filter. Results demonstrated that the ability of the filter to remove completely 1.5 mg/L NH₄⁺-N could be achieved on the sixth day at the soonest and the removal of Mn2+ could reach 1 mg/L by the 18th day. Filter R3 feeding with 1 mg/L Fe2+, 2 mg/L Mn2+ and 3.5 mg/L MnO₄- during the start-up period exhibited the optimum NH₄⁺-N and Mn2+ removal effect. Short dosing time was not conducive to attaining full NH₄⁺-N removal in filters, especially the activity of NO₂--N conversion to NO₃--N. The compositional analysis and element distribution analysis results demonstrated that there was an abundance of C, O, Mn, ...Continue Reading

References

Oct 18, 2005·Water Research·Virginia Alejandra PaciniGraciela Sanguinetti
Sep 24, 2008·Water Research·Mark S BurgerGraham A Gagnon
Feb 17, 2009·Journal of Bioscience and Bioengineering·Danladi Mahuta SahabiJun-ichi Koizumi
Oct 18, 2012·Bioresource Technology·Zully M PuyenAntoni Solé
Jun 26, 2017·Journal of Environmental Sciences (China)·Ya ChengYuankui Sun
Jul 30, 2017·International Journal of Environmental Research and Public Health·Ruifeng ZhangBeibei Zhang

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Citations

Feb 26, 2021·Environmental Science : Water Research & Technology·Darren A LytleMaily Pham

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