Effects of primary settling tank on denitrifying phosphorus removal in a full-scale AAO process

  • Zhen Zhou
  • , Wei Min Qiao
  • , Rezihan Muhemaiti
  • , Zhen Li
  • , Ling Yan Jiang
  • , Hai Juan Wei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Effects of primary settling tank (PST) on phosphorus removal and the ratio of denitrifying phosphorus removing bacteria (DPB) to phosphorus accumulating organisms (PAOs) in a full-scale anaerobic/anoxic/aerobic (AAO) process were investigated by field survey and batch test. The AAO process without PST showed higher phosphorus removal efficiency than that with PST. In the anoxic tank, the phenomenon of anoxic phosphorus uptake and anaerobic phosphorus release were observed in the AAO process without and with PST, respectively. The DBP/PAOs ratio was 46% and 39% in the AAO process with and without PST, respectively. The AAO process with PST yielded higher microbial activities than that without PST.

Original languageEnglish
Title of host publicationEnergy Development
Pages506-509
Number of pages4
DOIs
StatePublished - 2014
Externally publishedYes
Event3rd International Conference on Energy, Environment and Sustainable Development, EESD 2013 - Shanghai, China
Duration: 12 Nov 201313 Nov 2013

Publication series

NameAdvanced Materials Research
Volume860-863
ISSN (Print)1022-6680

Conference

Conference3rd International Conference on Energy, Environment and Sustainable Development, EESD 2013
Country/TerritoryChina
CityShanghai
Period12/11/1313/11/13

Keywords

  • AAO process
  • Denitrifying phosphorus removing bacteria
  • Primary settling tank
  • Wastewater treatment

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