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Domestic wastewater infiltration process in desert sandy soil and its irrigation prospect analysis.
Liu, Caixia; Liu, Fulai; Andersen, Mathias N; Wang, Gongming; Wu, Kun; Zhao, Quanlin; Ye, Zhengfang.
Afiliación
  • Liu C; Department of Environmental Engineering, Peking University, State Environmental Protection Key Laboratory of All Materials Flux in Rivers, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
  • Liu F; Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark.
  • Andersen MN; Department of Agroecology, Faculty of Science and Technology, Aarhus University, Tjele, Denmark.
  • Wang G; Department of Automation, Tsinghua University, Beijing 100084, China.
  • Wu K; Department of Environmental Engineering, Peking University, State Environmental Protection Key Laboratory of All Materials Flux in Rivers, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
  • Zhao Q; Department of Environmental Engineering, Peking University, State Environmental Protection Key Laboratory of All Materials Flux in Rivers, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
  • Ye Z; Department of Environmental Engineering, Peking University, State Environmental Protection Key Laboratory of All Materials Flux in Rivers, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China. Electronic address: yezhengfangiee@163.com.
Ecotoxicol Environ Saf ; 208: 111419, 2021 Jan 15.
Article en En | MEDLINE | ID: mdl-33075585
Although domestic wastewater and its reclaimed water are alternative water resources in arid region, investigation of their negative effect must be done to prevent environmental pollution. In this paper, a short-term column experiment was conducted to simulate the infiltration process of wastewater in desert soil. Alfalfa was planted and irrigated with fresh water for control (CK), tertiary treated domestic wastewater (TTW), secondary treated domestic wastewater (STW) and raw domestic wastewater untreated (RW). The effect of wastewater application on desert soil, drainage and plant properties was evaluated. Experimental results demonstrated that the tested desert soil has no soil structure, organic matter, nor microbial community while possess high infiltration rate. The use of wastewater significantly improved plant growth, and the biomass of TTW, RW, STW were 5.5, 4.3, 2.9 times of CK. The infiltration rate of water in bare soil was high (high to low: TTW, CK, RW, STW), while plant growth reduced infiltration rate (ca. 40% with TTW and RW). Wastewater irrigation and plant growth decreased soil zeta potential, while increased formation of aggregates and bacterial abundance and diversity in soil. Top soil (0-30 cm) accumulation of nitrogen (N), phosphorus (P), organic matter and E. coli was evidenced and all could go down to deep soil and drainage with constant wastewater use. It was concluded that domestic wastewater had big potential in desert soil vegetation recovering and function restoration. Nevertheless, the N, salt, P and organic matter and E. coli in wastewater could give rise to desert soil and groundwater contamination if improper treatment was used.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eliminación de Residuos Líquidos / Riego Agrícola / Aguas Residuales Idioma: En Revista: Ecotoxicol Environ Saf Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eliminación de Residuos Líquidos / Riego Agrícola / Aguas Residuales Idioma: En Revista: Ecotoxicol Environ Saf Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos