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Regulation of anaerobic fermentation for producing short-chain fatty acids from primary sludge in WWTPs by different alkalis.
Wang, Jian; Liu, Guo-Hua; Shao, Yuting; Zhang, Qian; Wei, Qi; Luo, Fangzhou; Sun, Wenzhuo; Liu, Shuai; Liu, Yuchen; Zhang, Jingbing; Qi, Lu; Wang, Hongchen.
Afiliação
  • Wang J; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Liu GH; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China. Electronic address: lgh@ruc.edu.cn.
  • Shao Y; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Zhang Q; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Wei Q; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Luo F; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Sun W; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Liu S; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Liu Y; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Zhang J; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Qi L; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
  • Wang H; Low-carbon Water Environmental Technology Center, School of Environment & Natural Resource, Renmin University of China, 59 Zhongguancun Street, Beijing, 100872, PR China.
J Environ Manage ; 299: 113623, 2021 Dec 01.
Article em En | MEDLINE | ID: mdl-34481372
Carbon source production from primary sludge in wastewater treatment plants (WWTPs) via anaerobic fermentation process has been paid more attention. However, slow hydrolysis rate and low yield of short-chain fatty acids (SCFAs) limited its application. This study aimed at improving the anaerobic fermentation efficiency of primary sludge by alkali regulation (NaOH, Na2CO3 and Ca(OH)2), and revealing the mechanism. Results showed that three kinds of alkalis allowed enhancing hydrolysis and acidification, and reducing methane production in the anaerobic fermentation process of primary sludge. The Na2CO3 regulation contributed to highest yield and productivity of SCFAs, reaching 1626 mg COD/L and 0.189 g COD/g VSS at 4th day, respectively. Microbial community structure analysis indicated that the relative abundance of fermentative microbial community was improved in the alkali regulation system, where methanogenic archaea was effectively inhibited. The continuous flow experiment further verified that the Na2CO3 regulation could steadily increase yield of SCFAs in the anaerobic fermentation process of primary sludge, and the yield was also the highest among three kinds of alkali regulation.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Esgotos / Purificação da Água Idioma: En Revista: J Environ Manage Ano de publicação: 2021 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Esgotos / Purificação da Água Idioma: En Revista: J Environ Manage Ano de publicação: 2021 Tipo de documento: Article