DOUHan,HUANGTing-lin,CHENGYa.Ammonia/Manganese Removal from Groundwater by Artificially Enhanced Manganese Oxide Filter Media[J].China Water & Wastewater,2024,40(3):15-22.
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Ammonia/Manganese Removal from Groundwater by Artificially Enhanced Manganese Oxide Filter Media

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第3期 Page: 15-22 Column: Date of publication: 2024-02-01
Author(s):
DOU　Han1; 2; 3;  HUANG　Ting-lin1; 2; 3;  CHENG　Ya1; 2; 3
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Shaanxi Key Laboratory of Environmental Engineering， Xi’an 710055， China； 3. Northwest China Key Laboratory of Water Resource and Environment Ecology， Xi’an 710055， China）
Keywords:
catalytic oxidation;  ammonia/manganese removal;  groundwater
Abstract:
In this study, an artificially enhanced manganese oxide filter media was prepared, and the formation of ammonia/manganese removal activity of active filter material in two different hardness and alkalinity groundwater environments was investigated. Meanwhile, the variation patterns of surface film loading and loading intensity of filter material over time were examined. The results showed that the ammonia/manganese removal activity formation rate of column 1# under low hardness and alkalinity water quality environment was significantly higher than that of column 2# under high hardness and alkalinity environment, in addition, the effluent ammonia concentration of column 1# was lower than 0.5 mg/L at 9 d, and that of column 2# was at 21 d. Furthermore, the artificially enhanced filter media loading strength and surface film loading were 0.07 g/10 g and 0.92 g/10 g, respectively, which were both higher than those of the conventional film (0.02 g/10 g and 0.072 g/10 g) . SEM and XRD analysis showed that the morphology and structure of the filter material changed during operation, with a large number of net-like structures appearing on the surface of mature filter material and the formation of sodium-manganese mineral-type manganese oxide. This study demonstrates that artificially enhanced manganese oxide filter media is more likely to form ammonia/manganese removal activity under low alkalinity and hardness groundwater conditions, can effectively remove ammonia/manganese with an influent concentration of 2 mg/L, and has potential engineering applications.
Last Update: 2024-02-01