Nitrogen and phosphorus removal by activated sludge process: A review

Zhengan Zhang, Shulin Pan, Fei Huang*, Xiang Li, Juanfang Shang, Jun Lai, Yitao Liao

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

22 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)99-106
Number of pages8
JournalMini-Reviews in Organic Chemistry
Volume14
Issue number2
DOIs
Publication statusPublished - 1 Apr 2017
Externally publishedYes

Keywords

  • Activated sludge
  • Anaerobic-anoxic-aerobic
  • Bio-doubling process
  • Denitrification
  • Oxidation ditch
  • Phosphorus
  • Sequencing batch reactor

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