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 language | English |
|---|---|
| Pages (from-to) | 165-173 |
| Number of pages | 9 |
| Journal | Applied Water Science |
| Volume | 7 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Mar 2017 |
Bibliographical note
Publisher Copyright:© 2014, The Author(s).
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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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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