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Effects of silica fume powder modified by oleic acid on the settleability of bulking sludge.
Fei, Xuening; Xi, Xuzhao; Gao, Jing; Zhu, Sen; Jiao, Xiumei; Cao, Lingyun; Liu, Lijuan.
Afiliación
  • Fei X; School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, People's Republic of China.
  • Xi X; Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin, People's Republic of China.
  • Gao J; School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, People's Republic of China.
  • Zhu S; Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, People's Republic of China.
  • Jiao X; Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin, People's Republic of China.
  • Cao L; School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, People's Republic of China.
  • Liu L; Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin, People's Republic of China.
Environ Technol ; 44(16): 2473-2480, 2023 Jun.
Article en En | MEDLINE | ID: mdl-35084288
Modified silica fume powder with oleic acid through coupling agent was prepared based on the in situ utilizing long-chain fatty acids (LCFA) properties of Microthrix parvicella (M. parvicella) in the activated sludge system. The modification was confirmed by XRD and infrared spectrum. The contact angle analysis showed that the modification gave the silica fume powder a hydrophobic surface. The modified silica fume powder had a good combination with M. parvicella from the SEM and Gram staining measurements. The addition of modified silica powder has a certain effect on the settling capacity of sludge, but has little effect on the sludge treatment capacity, while the SVI dropped from 400.1 to 100.0 mL/g. These suggested that the modified silica fume powder could be used as an excellent weight-increasing agent to inhibit sludge bulking.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aguas del Alcantarillado / Actinobacteria Idioma: En Revista: Environ Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 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 / Actinobacteria Idioma: En Revista: Environ Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article Pais de publicación: Reino Unido