Storage-based denitrification with municipal wastewater: influence of the denitrification stage duration
In: Environmental technology, Jg. 35 (2014), Heft 17-20, S. 2167-2175
academicJournal
- print, 24 ref
Zugriff:
Microbial polyhydroxyalkenoates (PHAs) degradation is the rate limiting step for denitrification which is based on microbial carbon storage. The influence of denitrification stage duration (3, 2 and 1.5 h) on PHA degradation kinetics and denitrification efficiency during PHA-based denitrification of municipal wastewater and acetate-based synthetic wastewater was investigated. PHA degradation kinetics showed a good fit to first-order reaction, with higher rates at higher PHA concentrations. Decreasing the denitrification stage duration from 3 to 2 h resulted in an increase in biomass PHA content with the corresponding higher specific denitrification rate. Moreover, the daily denitrification rates increased by about 30% in both the acetate fed reactor and the wastewater fed reactor. Further decreasing the denitrification stage duration to 1.5 h resulted in a decrease in sludge PHA content in both reactors. The amount of filtered chemical oxygen demand removed by storage and PHA stored, remained similar regardless of the denitrification stage duration.
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Storage-based denitrification with municipal wastewater: influence of the denitrification stage duration
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Autor/in / Beteiligte Person: | KRASNITS, Eli ; BELIAVSKI, Michael ; TARRE, Sheldon ; GREEN, Michal |
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Zeitschrift: | Environmental technology, Jg. 35 (2014), Heft 17-20, S. 2167-2175 |
Veröffentlichung: | Abingdon: Taylor & Francis, 2014 |
Medientyp: | academicJournal |
Umfang: | print, 24 ref |
ISSN: | 0959-3330 (print) |
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