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Simultaneous nitrogen and phosphorus removal through an integrated partial-denitrification/anammox process in a single UAFB system.
Wan, Junfeng; Zhang, Zixuan; Li, Pei; Ma, Yifei; Li, Haisong; Guo, Qiong; Wang, Yan; Dagot, Christophe.
Afiliación
  • Wan J; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China; Henan International Joint Laboratory of Environment and Resources, Zhengzhou, 450001, PR China. Electronic address: wanjunfeng@zzu.edu.cn.
  • Zhang Z; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China.
  • Li P; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China.
  • Ma Y; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China.
  • Li H; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China; Henan International Joint Laboratory of Environment and Resources, Zhengzhou, 450001, PR China.
  • Guo Q; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China; Henan International Joint Laboratory of Environment and Resources, Zhengzhou, 450001, PR China. Electronic address: guoqiong@zzu.edu.cn.
  • Wang Y; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, PR China; Henan International Joint Laboratory of Environment and Resources, Zhengzhou, 450001, PR China.
  • Dagot C; GRESE EA 4330, Université de Limoges, 123 Avenue Albert Thomas, F-87060, Limoges, Cedex, France; INSERM, U1092, Limoges, France.
Chemosphere ; 350: 141040, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38145846
ABSTRACT
With the aim of obtaining enhanced nitrogen removal and phosphate recovery in mainstream sewage, we examined an integrated partial-denitrification/anaerobic ammonia oxidation (PD/A) process over a period of 189 days to accomplish this goal. An up-flow anaerobic fixed-bed reactor (UAFB) used in the integrated PD/A process was started up with anammox sludge inoculated and the influent composition controlled. Results showed that the system achieved a phosphorus removal efficiency of 82% when the influent concentration reached 12.0 mg/L. Batch tests demonstrated that stable and efficient removal of chemical oxygen demand (COD), nitrogen, and phosphorus was achieved at a COD/NO3--N ratio of 3.5. Scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis indicated that hydroxyapatite was the main crystal in the biofilm. Furthermore, substrate variation along the axial length of UAFB indicated that partial denitrification and anammox primarily took place near the reactor's bottom. According to a microbiological examination, 0.4% of the PD/A process's microorganisms were anaerobic ammonia oxidizing bacteria (AnAOB). Ca. Brocadia, Ca. Kuenenia, and Ca. Jettenia served as the principal AnAOB generals in the system. Thauera, Candidatus Accumulibacter, Pseudomonas, and Acinetobacter, which together accounted for 27% of the denitrifying and phosphorus-accumulating bacteria, were helpful in advanced nutrient removal. Therefore, the combined PD/A process can be a different option in the future for sewage treatment to achieve contemporaneous nutrient removal.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Aguas Residuales Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Aguas Residuales Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido