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Effect of carbon source on acclimatization of nitrifying bacteria to achieve high-rate partial nitrification of wastewater with high ammonium concentration

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Experiments in two laboratory-scale sequential batch reactors were carried out to investigate the effect of heterotrophic bacteria on nitrifying bacteria using external carbon sources. Partial nitrification of ammonium-rich wastewater during short-term acclimatization enriched the activity of ammonia-oxidizing bacteria in both reactors. Heterotrophic bacteria exhibited a minor effect on nitrifying bacteria, and complete removal of ammonium occurred at a rate of 41 mg L−1 h−1 in both reactors. The main strategy of this research was to carry out partial nitrification using high-activity ammonia-oxidizing bacteria with a high concentration of free ammonia (70 mg L−1). The NO2 /(NO3  + NO2 ) ratio was greater than 0.9 in both reactors most of the time.

Original languageEnglish
Pages (from-to)165-173
Number of pages9
JournalApplied Water Science
Volume7
Issue number1
DOIs
StatePublished - 1 Mar 2017

Bibliographical note

Publisher Copyright:
© 2014, The Author(s).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 6 - Clean Water and Sanitation
    SDG 6 Clean Water and Sanitation

Keywords

  • Ammonium-rich wastewater
  • Nitrification
  • Nitrifying bacteria
  • Partial nitrification

ASJC Scopus subject areas

  • Water Science and Technology

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