Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis
The development of efficient and low-cost wastewater treatment processes remains an important challenge. A microaerobic up-flow oxidation ditch (UOD) with micro-electrolysis by waterfall aeration was designed for treating real municipal wastewater. The effects of influential factors such as up-flow...
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The Royal Society
2021
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oai:doaj.org-article:08bb24dd32e04c2783ef594dd424df142021-12-01T08:05:33ZPollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis10.1098/rsos.2018872054-5703https://doaj.org/article/08bb24dd32e04c2783ef594dd424df142021-12-01T00:00:00Zhttps://royalsocietypublishing.org/doi/10.1098/rsos.201887https://doaj.org/toc/2054-5703The development of efficient and low-cost wastewater treatment processes remains an important challenge. A microaerobic up-flow oxidation ditch (UOD) with micro-electrolysis by waterfall aeration was designed for treating real municipal wastewater. The effects of influential factors such as up-flow rate, waterfall height, reflux ratio, number of stages and iron dosing on pollutant removal were fully investigated, and the optimum conditions were obtained. The elimination efficiencies of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN) and total phosphorus (TP) reached up to 84.33 ± 2.48%, 99.91 ± 0.09%, 93.63 ± 0.60% and 89.27 ± 1.40%, respectively, while the effluent concentrations of COD, NH4+-N, TN and TP were 20.67 ± 2.85, 0.02 ± 0.02, 1.39 ± 0.09 and 0.27 ± 0.02 mg l−1, respectively. Phosphorous removal was achieved by iron–carbon micro-electrolysis to form an insoluble ferric phosphate precipitate. The microbial community structure indicated that carbon and nitrogen were removed via multiple mechanisms, possibly including nitrification, partial nitrification, denitrification and anammox in the UOD.Zhen-dong ZhaoQiang LinYang ZhouYu-hong FengQi-mei HuangXiang-hui WangThe Royal Societyarticlemicroaerobicmicro-electrolysiswaterfall aerationmicrobial communityScienceQENRoyal Society Open Science, Vol 8, Iss 12 (2021) |
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microaerobic micro-electrolysis waterfall aeration microbial community Science Q |
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microaerobic micro-electrolysis waterfall aeration microbial community Science Q Zhen-dong Zhao Qiang Lin Yang Zhou Yu-hong Feng Qi-mei Huang Xiang-hui Wang Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| description |
The development of efficient and low-cost wastewater treatment processes remains an important challenge. A microaerobic up-flow oxidation ditch (UOD) with micro-electrolysis by waterfall aeration was designed for treating real municipal wastewater. The effects of influential factors such as up-flow rate, waterfall height, reflux ratio, number of stages and iron dosing on pollutant removal were fully investigated, and the optimum conditions were obtained. The elimination efficiencies of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN) and total phosphorus (TP) reached up to 84.33 ± 2.48%, 99.91 ± 0.09%, 93.63 ± 0.60% and 89.27 ± 1.40%, respectively, while the effluent concentrations of COD, NH4+-N, TN and TP were 20.67 ± 2.85, 0.02 ± 0.02, 1.39 ± 0.09 and 0.27 ± 0.02 mg l−1, respectively. Phosphorous removal was achieved by iron–carbon micro-electrolysis to form an insoluble ferric phosphate precipitate. The microbial community structure indicated that carbon and nitrogen were removed via multiple mechanisms, possibly including nitrification, partial nitrification, denitrification and anammox in the UOD. |
| format |
article |
| author |
Zhen-dong Zhao Qiang Lin Yang Zhou Yu-hong Feng Qi-mei Huang Xiang-hui Wang |
| author_facet |
Zhen-dong Zhao Qiang Lin Yang Zhou Yu-hong Feng Qi-mei Huang Xiang-hui Wang |
| author_sort |
Zhen-dong Zhao |
| title |
Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| title_short |
Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| title_full |
Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| title_fullStr |
Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| title_full_unstemmed |
Pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| title_sort |
pollutant removal from municipal sewage by a microaerobic up-flow oxidation ditch coupled with micro-electrolysis |
| publisher |
The Royal Society |
| publishDate |
2021 |
| url |
https://doaj.org/article/08bb24dd32e04c2783ef594dd424df14 |
| work_keys_str_mv |
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