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A new substrate equalization method for optimizing the influent conditions and fluid flow patterns of a multifed upflow anaerobic sludge blanket reactor with mature anammox granules.
Xing, Bao-Shan; Tang, Xi-Fang; Li, Ling-Hu; Fu, Yu-Lin; Liu, Jia-Yi; Wang, Ya-Ge; Sun, Xin-Xin; Li, Yu-You; Chen, Rong; Jin, Ren-Cun.
Afiliación
  • Xing BS; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 9808579, Japan; Scho
  • Tang XF; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Li LH; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Fu YL; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Liu JY; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Wang YG; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Sun XX; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Li YY; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 9808579, Japan.
  • Chen R; School of Environmental and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
  • Jin RC; School of Engineering, Hangzhou Normal University, Hangzhou 310018, China.
Bioresour Technol ; 400: 130700, 2024 May.
Article en En | MEDLINE | ID: mdl-38615969
ABSTRACT
To improve nitrogen removal efficiency (NRE) and achieve homogenous distribution of anammox sludge and substrate, a new substrate equalization theory and a cumulative overload index was proposed for multifed upflow anaerobic sludge bed (MUASB) reactors with mature anammox granules. The performance and flow patterns of MUASB reactors were investigated under various influent conditions. The results showed that the nitrogen removal performance and stability of MUASB reactors could be optimized by minimizing the cumulative load. The NRE gradually increased from 83.3 ± 2.2 %, 86.8 ± 4.2 % to 89.3 ± 4.1 % and 89.7 ± 1.6 % in feeding flow tests and feeding port tests, respectively. Furthermore, the flow patterns were compared based on residence time distribution and computational fluid dynamics, indicating that a better equilibrium distribution of microorganisms and substrates could be achieved in the MUASB reactors under the lowest cumulative load. Therefore, substrate equalization theory can be used to optimize the nitrogen removal performance of MUASB reactors with low-carbon footprints.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Reactores Biológicos / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Reactores Biológicos / Nitrógeno Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido