Nitrogen and Phosphorus Removal by Activated Sludge Process: A Review

Author(s): Zhengan Zhang, Shulin Pan, Fei Huang*, Xiang Li, Juanfang Shang, Jun Lai, Yitao Liao.

Journal Name: Mini-Reviews in Organic Chemistry

Volume 14 , Issue 2 , 2017

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Graphical Abstract:


This paper describes the mechanism of nitrogen and phosphorus removal by activated sludge process, and introduces several conventional nitrogen and phosphorus bioremoval processes, namely sequencing batch reactor (SBR), anaerobic-anoxic-aerobic (AAO), oxidation ditch, and bio-doubling process (BDP). Many improved technologies were invented to compensate for the defects of conventional activated sludge process Nitrogen and phosphorus bioremoval by activated sludge process have many similarities and conflicts, including different sludge characteristics and competition for carbon sources that affect the results of the simultaneous nitrogen and phosphorus removal. Therefore, a series of countermeasures to resolve such conflicts are reviewed. Economy, sefficiency and low energy consumption will be the developing trends of wastewater treatment in the future.

Keywords: Activated sludge, denitrification, phosphorus, sequencing batch reactor, oxidation ditch, anaerobic-anoxic-aerobic, bio-doubling process.

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Article Details

Year: 2017
Page: [99 - 106]
Pages: 8
DOI: 10.2174/1570193X14666161130151411
Price: $65

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