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Compatibility of vivianite-crystallization pathway of phosphorus recovery with anaerobic digestion systems of thermally hydrolyzed sludge.
Cui, Haoran; Yang, Xiaofan; Gao, Xiaozhong; Sun, Dezhi; Cheng, Xiang.
Afiliación
  • Cui H; Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, China.
  • Yang X; Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, China.
  • Gao X; Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, China.
  • Sun D; Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, China.
  • Cheng X; Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, China. Electronic address: xcheng@bjfu.edu.cn.
Environ Res ; 260: 119640, 2024 Nov 01.
Article en En | MEDLINE | ID: mdl-39029727
ABSTRACT
Phosphorus in sewage is mostly enriched in activated sludge in wastewater treatment plants, making excess sludge an appropriate material for phosphorus recovery. The potential of vivianite (Fe3(PO4)2·8H2O) crystallization-based phosphorus recovery during the anaerobic digestion of thermally hydrolyzed sludge was discussed with influences of organic compounds on the formation of vivianite crystals being investigated in detail. Bovine serum albumin, humic acids and alginate, as model compounds of proteins, humic acids and polysaccharides, all inhibited vivianite crystallization, with the influence of humic acids being the most significant. A sludge retention time of >12 d for effective degradation of organic compounds and a certain degree of FeII excess are suggested to decrease the organics resulting inhibition. The results demonstrate the compatibility of vivianite-crystallization pathway of phosphorus recovery with anaerobic sludge digesters, and reveal the complexity of vivianite formation in the sludge with further research warranted to minimize the inhibitory influences.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Aguas del Alcantarillado / Cristalización Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Aguas del Alcantarillado / Cristalización Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos