Authors: Xu, Aotian; Young, Stephanie; Zhang, Yanqiu

Source: Journal of Environmental Engineering and Science, Volume 7, Number 4, July 2008 , pp. 417-421(5)

Publisher: NRC Research Press

Abstract:

The single-sludge step-feed anoxic-aerobic process (SSFAOP) was implemented in the Xuzhou wastewater treatment plant (WWTP) in China to enhance ammonia and nitrogen removal performance. Influent flow splitting and step feeding in the aerobic zone were used to provide high concentrations of mixed liquor suspended solids (MLSS), long solids retention time (SRT), and short nitrification time. After implementation, removal efficiencies of ammonia nitrogen >90% and total Kjeldahl nitrogen (TKN) >80% were achieved. The amount of waste activated sludge (WAS) was significantly reduced, and sludge bulkings were eliminated. The application of SSFAOP also reduced capital and operational costs.

Un processus anoxique-aérobie à alimentation étagée à un seul type de boue (SSFAOP), a été implanté à l'usine de traitement des eaux usées de Xuzhou, en Chine, afin d'améliorer l'élimination de l'ammoniac et de l'azote. La division du flux et l'alimentation étagée de l'influent dans la zone aérobie ont été utilisées pour obtenir des concentrations élevées en matières solides en suspension dans la liqueur mixte (MLSS), un long temps de rétention des solides (SRT) et un court temps de nitrification. Après l'implantation, des efficacités d'élimination de l'azote ammoniacal (>90 %) et l'azote total Kjeldahl (>80 %) ont été réalisées. La quantité de boues activées dans les déchets (WAS) a été substantiellement réduite et le gonflement des boues a été éliminé. L'utilisation du SSFAOP a réduit les coûts en capitaux et opérationnels.

Document Type: Research article

Publication date: 2008-07-01

More about this publication?

• Since January 2002, NRC Research Press has published the Journal of Environmental Engineering and Science. During the seven-year history of the journal, the co-editors, Dr. Donald S. Mavinic and Dr. Daniel W. Smith, built a high-quality journal that was well respected by its community of researchers in Canada and around the world. The last issues of the Journal of Environmental Engineering and Science was published in November 2008 together with a supplement.

Related content

• In this: publication
• By this: publisher
• In this Subject: General & Civil Engineering ,  Hydraulic & Environmental Engineering
• By this author: Xu, Aotian ;  Young, Stephanie ;  Zhang, Yanqiu

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers