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Novel overlapping constructed wetlands with water drops reoxygenation and lightweight fillers for decentralized wastewater treatment.
Shuyuan, Zhao; Guo, Li; Paipai, Shui; Wenbo, Nie; Han, Qu; Jun, Yan; Hong, Li; Ruiling, Wang.
Afiliación
  • Shuyuan Z; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China.
  • Guo L; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; Chongqing Green Environmental Protection Technology Co. Ltd, China.
  • Paipai S; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China.
  • Wenbo N; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China.
  • Han Q; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China. Electronic address: hanqu@cqu.edu.cn.
  • Jun Y; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China.
  • Hong L; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environmental and Ecology, Chongqing University, Chongqing 400045, China.
  • Ruiling W; Beijing Capital Eco-Environment Protection Group Co., Ltd., Beijing 100044, China; Capital Aihua <Tianjin> Municipal and Environmental Engineering Co., Ltd., Tianjin 300060, China. Electronic address: wz912076@qq.com.
Bioresour Technol ; 408: 131170, 2024 Sep.
Article en En | MEDLINE | ID: mdl-39069144
ABSTRACT
Constructed wetlands (CWs), crucial for the rural decentralized wastewater treatment, have encountered limitations in nutrient removal efficiency and require extensive land area. This study has constructed a novel overlapping horizontal subsurface flow CWs (OLCWs). Remarkably, OLCWs with mixed lightweight fillers (M-OLCWs) exhibited a significant enhancement in total nitrogen (TN) removal efficiency (88-91 %) in different hydraulic loading rates compared to single filler OLCWs (48-62 %). This significant enhancement can be attributed to the lightweight fillers, which have higher abundances and diversity of nitrogen related microorganisms. The treatment dynamics revealed that the second stage exhibited an excellent TN removal efficiency (73-75 %) attributed to sufficient dissolved oxygen concentration by water drops reoxygenation. The research reveals that M-OLCWs, by utilizing water drops reoxygenation and lightweight fillers, not only enhance pollutant treatment efficiency but also reduce required land area, thereby offering a sustainable solution for rural decentralized wastewater treatment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Purificación del Agua / Humedales / Aguas Residuales / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Purificación del Agua / Humedales / Aguas Residuales / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido