Swine Wastewater Treatment System Using Constructed Wetlands Connected in Series
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García-Valero, Amalia; Acosta Avilés, José Alberto; Faz Cano, Ángel; Gómez López, María Dolores; Carmona, Dora María; [et al.]Área de conocimiento
Ingeniería AgroforestalFecha de publicación
2024-01-07Editorial
MDPICita bibliográfica
García-Valero A, Acosta JA, Faz Á, Gómez-López MD, Carmona DM, Terrero MA, El Bied O, Martínez-Martínez S. Swine Wastewater Treatment System Using Constructed Wetlands Connected in Series. Agronomy. 2024; 14(1):143. https://doi.org/10.3390/agronomy14010143Revisión por pares
siPalabras clave
pig slurrypurification
pollution
nitrates
Resumen
The main objective of this study was to analyze the efficiency of CWs for purifying swine wastewater in order to reduce its pollutant load. The system included a pretreatment module (raw swine wastewater tank, phase separator, and settlement tank), and three constructed wetlands connected in series and planted with Phragmites australis and Suaeda vera. Three treatment cycles were carried out with a total hydraulic retention time in the wetland of 21 days for each cycle. Pig slurry samples were collected in triplicate after each treatment module, and physical–chemical analyses were performed. The results showed that the phase separator decreased the suspended solids, turbidity, and the chemical oxygen demand in the treated swine wastewater. The system enabled considerable nitrogen reductions (Kjeldahl nitrogen, NH4+, and organic nitrogen), and the highest removal was reported in the wetlands. However, the cations and anions showed different efficiencies. In some cases (Ca, Mg, and Na), ...
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