Performance of a novel tidal unsaturated constructed wetland on wastewater purification
| Autor: | Shuang Liang, Lin-Lan Zhuang, Ting Yang, Song Xiran, Li-Hua Huang, Lulu Zhou, Jian Zhang |
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| Rok vydání: | 2021 |
| Předmět: |
Pollutant
geography geography.geographical_feature_category Process Chemistry and Technology Environmental engineering chemistry.chemical_element Wetland 02 engineering and technology 010501 environmental sciences 01 natural sciences Oxygen 020401 chemical engineering chemistry Wastewater Constructed wetland Environmental science Nitrification 0204 chemical engineering Safety Risk Reliability and Quality Subsurface flow Waste Management and Disposal Effluent 0105 earth and related environmental sciences Biotechnology |
| Zdroj: | Journal of Water Process Engineering. 39:101871 |
| ISSN: | 2214-7144 |
| Popis: | Since low oxygen supplement rate in subsurface flow constructed wetland was a critical obstacle to bacterial nitrification process, a novel tidal unsaturated constructed wetland (CWTU) realized by the siphon effluent pipe was proposed in this study to overcome the problem and strengthen the pollutants removal. Four CWTUs were constructed with different ratios of tidal unsaturated section to constant saturated section (80: 0, 60: 20, 50: 30 and 30: 50). Results showed that the NH4+-N removal efficiency increased with the increasing ratio of tidal unsaturated section to constant saturated section. Among which, CWTU1 significantly enhanced the oxygen supplement from air to wastewater, and the subsequent removal efficiencies of NH4+-N (51.04 ± 6.99 % in CWTU1), and COD (89.90 ± 2.10 % in CWTU1) compared with traditional wetland (NH4+-N 12.96 ± 5.26 %, COD 65.30 ± 10.08 %) (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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