Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events
Optimized methods for simultaneous removal of nitrate, nitrite and ammonium are important features of nutrient removal. Nitrogen removal efficiency in an intermittently aerated sequencing batch reactor (IA-SBR) with multiple filling events was studied. No external carbon source was added and three f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2016-09-01
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| Series: | Polish Journal of Chemical Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/pjct-2016-0051 |
| _version_ | 1818581608732557312 |
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| author | Hajsardar Mehdi Borghei Seyed Mehdi Hassani Amir Hessam Takdastan Afshin |
| author_facet | Hajsardar Mehdi Borghei Seyed Mehdi Hassani Amir Hessam Takdastan Afshin |
| author_sort | Hajsardar Mehdi |
| collection | DOAJ |
| description | Optimized methods for simultaneous removal of nitrate, nitrite and ammonium are important features of nutrient removal. Nitrogen removal efficiency in an intermittently aerated sequencing batch reactor (IA-SBR) with multiple filling events was studied. No external carbon source was added and three filling events were considered. Oxidationreduction potential (ORP) and pH curve at solids retention time (SRT) of 20 d were analyzed. Effects of three organic loading rates (OLR), 0.67, 1.0 and 1.5 kgCOD/m3d, and three nitrogen loading rates (NLR), 0.054, 0.1 and 0.15 kgN/m3d, on nitrogen removal were studied. Nitrate Apex in pH curve and Nitrate Knee in ORP profile indicated that the end of denitrification would be achieved sooner. The kinetic coefficients of endogenous decay (kd) and yield (Y) were identified to evaluate heterotrophic specific denitrification rate (SDNRb). In period 2 at NLR of 0.054 kgN/m3d and considering 2 anoxic and 3 aerobic phases, nitrogen removal efficiency was 91.43%. |
| first_indexed | 2024-12-16T07:36:12Z |
| format | Article |
| id | doaj.art-284c3ba2f9c8457ca102afaf3f0c08b2 |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-12-16T07:36:12Z |
| publishDate | 2016-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-284c3ba2f9c8457ca102afaf3f0c08b22022-12-21T22:39:13ZengSciendoPolish Journal of Chemical Technology1899-47412016-09-01183728010.1515/pjct-2016-0051pjct-2016-0051Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling eventsHajsardar Mehdi0Borghei Seyed Mehdi1Hassani Amir Hessam2Takdastan Afshin3Islamic Azad University, Department of Environmental Engineering, Science and Research Branch, Tehran, Postal code: 1477893855, Iran (Islamic Republic of)Sharif University of Technology, Department of Chemical and Petroleum Engineering, Tehran, Postal code: 11365/8639, Iran (Islamic Republic of)Islamic Azad University, Department of Environmental Engineering, Science and Research Branch, Tehran, Postal code: 1477893855, Iran (Islamic Republic of)Ahvaz Jundishapur University of Medical Sciences, Environmental Technologies Research Center, Ahvaz, Postal code: 6135715794, Iran (Islamic Republic of)Optimized methods for simultaneous removal of nitrate, nitrite and ammonium are important features of nutrient removal. Nitrogen removal efficiency in an intermittently aerated sequencing batch reactor (IA-SBR) with multiple filling events was studied. No external carbon source was added and three filling events were considered. Oxidationreduction potential (ORP) and pH curve at solids retention time (SRT) of 20 d were analyzed. Effects of three organic loading rates (OLR), 0.67, 1.0 and 1.5 kgCOD/m3d, and three nitrogen loading rates (NLR), 0.054, 0.1 and 0.15 kgN/m3d, on nitrogen removal were studied. Nitrate Apex in pH curve and Nitrate Knee in ORP profile indicated that the end of denitrification would be achieved sooner. The kinetic coefficients of endogenous decay (kd) and yield (Y) were identified to evaluate heterotrophic specific denitrification rate (SDNRb). In period 2 at NLR of 0.054 kgN/m3d and considering 2 anoxic and 3 aerobic phases, nitrogen removal efficiency was 91.43%.https://doi.org/10.1515/pjct-2016-0051denitrificationintermittent aerationfilling eventoxidation-reduction potentialsequencing batch reactor |
| spellingShingle | Hajsardar Mehdi Borghei Seyed Mehdi Hassani Amir Hessam Takdastan Afshin Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events Polish Journal of Chemical Technology denitrification intermittent aeration filling event oxidation-reduction potential sequencing batch reactor |
| title | Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events |
| title_full | Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events |
| title_fullStr | Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events |
| title_full_unstemmed | Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events |
| title_short | Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events |
| title_sort | simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor sbr with multiple filling events |
| topic | denitrification intermittent aeration filling event oxidation-reduction potential sequencing batch reactor |
| url | https://doi.org/10.1515/pjct-2016-0051 |
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