Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water
Temperature is an important factor influencing the treatment effect of biological aerated filters (BAFs). In this study, BAFs incorporating biological manganese oxides (BMOs) were used to treat micro-polluted source water containing organic masses and ammonia, and the influence of temperature on the...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/15/2695 |
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| author | Lichao Nengzi Haitao Li Dan Ke Xiaofeng Wu Lin Meng Yin Fang Qiyuan Hu |
| author_facet | Lichao Nengzi Haitao Li Dan Ke Xiaofeng Wu Lin Meng Yin Fang Qiyuan Hu |
| author_sort | Lichao Nengzi |
| collection | DOAJ |
| description | Temperature is an important factor influencing the treatment effect of biological aerated filters (BAFs). In this study, BAFs incorporating biological manganese oxides (BMOs) were used to treat micro-polluted source water containing organic masses and ammonia, and the influence of temperature on the removal efficiency of the pollutants was investigated. The results showed that after the formation of biogenic manganese oxides (BMOs) in the filter layer, the removal efficiency of CODMn significantly improved. When the water temperature was approximately 24 °C, 16 °C, and 6~8 °C, the removal rates of COD<sub>Mn</sub>, ammonia, and manganese were 60.64, 42.55, and 20.48; 98.40, 95.58, and 85.04; and 98.70, 97.63, and 96.38%, respectively. The influence of water temperature on the removal efficiency of the pollutants was hierarchically structured as follows: COD<sub>Mn</sub> > ammonia > manganese. Analysis of the removal efficiencies of the pollutants along the filter layer showed that COD<sub>Mn</sub> had been eliminated in every filtration layer, and ammonia and manganese were mainly removed in the 0~0.4 m and 0~0.8 m regions of the filter layer, respectively. With a decreasing water temperature, the concentrations of COD<sub>Mn</sub>, ammonia, and manganese along the filter layer increased. The biological COD<sub>Mn</sub>, manganese, and ammonia removal processes were all first-order kinetic reactions. With a decreasing water temperature, the kinetic constant k gradually decreased, and the reaction half-life (t<sub>1/2</sub>) gradually increased. |
| first_indexed | 2024-03-11T00:14:14Z |
| format | Article |
| id | doaj.art-223e63a122694c1f8d32abb84e87c027 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T00:14:14Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-223e63a122694c1f8d32abb84e87c0272023-11-18T23:46:30ZengMDPI AGWater2073-44412023-07-011515269510.3390/w15152695Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source WaterLichao Nengzi0Haitao Li1Dan Ke2Xiaofeng Wu3Lin Meng4Yin Fang5Qiyuan Hu6Academy of Environmental and Economics Sciences, Xichang University, Xichang 615013, ChinaCollege of Resources and Environment, Xichang University, Xichang 615013, ChinaAcademy of Environmental and Economics Sciences, Xichang University, Xichang 615013, ChinaAcademy of Environmental and Economics Sciences, Xichang University, Xichang 615013, ChinaAcademy of Environmental and Economics Sciences, Xichang University, Xichang 615013, ChinaCollege of Resources and Environment, Xichang University, Xichang 615013, ChinaAcademy of Environmental and Economics Sciences, Xichang University, Xichang 615013, ChinaTemperature is an important factor influencing the treatment effect of biological aerated filters (BAFs). In this study, BAFs incorporating biological manganese oxides (BMOs) were used to treat micro-polluted source water containing organic masses and ammonia, and the influence of temperature on the removal efficiency of the pollutants was investigated. The results showed that after the formation of biogenic manganese oxides (BMOs) in the filter layer, the removal efficiency of CODMn significantly improved. When the water temperature was approximately 24 °C, 16 °C, and 6~8 °C, the removal rates of COD<sub>Mn</sub>, ammonia, and manganese were 60.64, 42.55, and 20.48; 98.40, 95.58, and 85.04; and 98.70, 97.63, and 96.38%, respectively. The influence of water temperature on the removal efficiency of the pollutants was hierarchically structured as follows: COD<sub>Mn</sub> > ammonia > manganese. Analysis of the removal efficiencies of the pollutants along the filter layer showed that COD<sub>Mn</sub> had been eliminated in every filtration layer, and ammonia and manganese were mainly removed in the 0~0.4 m and 0~0.8 m regions of the filter layer, respectively. With a decreasing water temperature, the concentrations of COD<sub>Mn</sub>, ammonia, and manganese along the filter layer increased. The biological COD<sub>Mn</sub>, manganese, and ammonia removal processes were all first-order kinetic reactions. With a decreasing water temperature, the kinetic constant k gradually decreased, and the reaction half-life (t<sub>1/2</sub>) gradually increased.https://www.mdpi.com/2073-4441/15/15/2695organic mass and ammoniamicro-polluted source waterwater temperaturebiological aerated filter |
| spellingShingle | Lichao Nengzi Haitao Li Dan Ke Xiaofeng Wu Lin Meng Yin Fang Qiyuan Hu Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water Water organic mass and ammonia micro-polluted source water water temperature biological aerated filter |
| title | Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water |
| title_full | Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water |
| title_fullStr | Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water |
| title_full_unstemmed | Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water |
| title_short | Influence of Temperature on the Removal Efficiency of Organic Matter and Ammonia from Micro-Polluted Source Water |
| title_sort | influence of temperature on the removal efficiency of organic matter and ammonia from micro polluted source water |
| topic | organic mass and ammonia micro-polluted source water water temperature biological aerated filter |
| url | https://www.mdpi.com/2073-4441/15/15/2695 |
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