Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor
The study was conducted to evaluate the biological nutrient removal of young leachate from transfer station that is considered as a high concentration wastewater due to high chemical oxygen demand (COD) and biological oxygen demand (BOD) content. The process has been performed in the combined ana...
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my-upm-ir.73312013-05-27T07:34:43Z Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor 2009-11 Movahed, Bahareh Sanaie The study was conducted to evaluate the biological nutrient removal of young leachate from transfer station that is considered as a high concentration wastewater due to high chemical oxygen demand (COD) and biological oxygen demand (BOD) content. The process has been performed in the combined anaerobic/anoxic/aerobic bioreactor. Biological nitrification and denitrification in combination with phosphorous removal have been shown appropriate to remove nitrogen and phosphorous in this single column bioreactor where Cosmo-ball media were launched into the aerobic zone to improve bacteria growth in this zone. The anaerobic and aerobic acclimatized liquor seeded into the anaerobic and aerobic zone of bioreactor respectively and after 30 days of transition period, experimental procedure was started in two different phase. The diluted leachate injected to the up flow continuous anaerobic/anoxic/aerobic vertical reactor in process of two phases which each phase consist of three runs. The first phase involved three different organic loading rates (OLR) of 8, 13.3 and 26.6 kg COD/ m3.day with constant 24 hour of hydraulic retention time (HRT). In the second phase three different HRT of 12, 24, and 36 hours; and constant OLR (=13.3 kg COD/ m3.day) applied to the process to find out the best organic removal. Ammonical nitrogen removal investigated under different C/N ratio in the first phase and in the second phase were studied under different HRT. Phosphorous removal was examined in different concentrations due to leachate dilution in both phases. This experiment performed in the Environmental and Chemical UPM laboratory and samples were collected from the Taman Beringin Municipal Solid Waste Transfer Station, Klang, Selangor. The results showed that, the highest removal of ammonical nitrogen in aerobic run was due to the presence of sufficient amount of oxygen. The results of the project indicated that by increasing C/N ratios, ammonia removal decreased due to the competition between autotroph and heterotroph microorganisms which was 85% in the lowest organic concentration. The results indicated as HRT increased, NH4-N concentration of effluent decreased and the removal efficiency increased accordingly and the best removal efficiency of the system were achieved in 36 hour as much as 89%. The best organic removal were obtained at the lowest COD loading rate and the longest HRT in phase one and two which was equal to 92% and 94% respectively. It was found that the anaerobic/anoxic/aerobic attached bioreactor with Cosmo-Ball as the media with significant acclimatizing and transition period for bacteria growth has succeeded in removing nitrogen and organic from diluted young leachate with high amount of COD and low amount of nitrogen. 2009-11 Thesis http://psasir.upm.edu.my/id/eprint/7331/ http://psasir.upm.edu.my/id/eprint/7331/1/FK_2009_17a.pdf application/pdf en public masters Universiti Putra Malaysia Faculty of Engineering English |
| institution |
Universiti Putra Malaysia |
| collection |
PSAS Institutional Repository |
| language |
English English |
| topic |
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| spellingShingle |
Movahed, Bahareh Sanaie Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| description |
The study was conducted to evaluate the biological nutrient removal of young leachate
from transfer station that is considered as a high concentration wastewater due to high
chemical oxygen demand (COD) and biological oxygen demand (BOD) content. The
process has been performed in the combined anaerobic/anoxic/aerobic bioreactor.
Biological nitrification and denitrification in combination with phosphorous removal
have been shown appropriate to remove nitrogen and phosphorous in this single column
bioreactor where Cosmo-ball media were launched into the aerobic zone to improve
bacteria growth in this zone. The anaerobic and aerobic acclimatized liquor seeded into the anaerobic and aerobic
zone of bioreactor respectively and after 30 days of transition period, experimental
procedure was started in two different phase. The diluted leachate injected to the up flow
continuous anaerobic/anoxic/aerobic vertical reactor in process of two phases which
each phase consist of three runs. The first phase involved three different organic loading
rates (OLR) of 8, 13.3 and 26.6 kg COD/ m3.day with constant 24 hour of hydraulic
retention time (HRT). In the second phase three different HRT of 12, 24, and 36 hours;
and constant OLR (=13.3 kg COD/ m3.day) applied to the process to find out the best
organic removal. Ammonical nitrogen removal investigated under different C/N ratio in
the first phase and in the second phase were studied under different HRT. Phosphorous
removal was examined in different concentrations due to leachate dilution in both
phases. This experiment performed in the Environmental and Chemical UPM laboratory
and samples were collected from the Taman Beringin Municipal Solid Waste Transfer
Station, Klang, Selangor.
The results showed that, the highest removal of ammonical nitrogen in aerobic run was
due to the presence of sufficient amount of oxygen. The results of the project indicated
that by increasing C/N ratios, ammonia removal decreased due to the competition
between autotroph and heterotroph microorganisms which was 85% in the lowest
organic concentration. The results indicated as HRT increased, NH4-N concentration of
effluent decreased and the removal efficiency increased accordingly and the best
removal efficiency of the system were achieved in 36 hour as much as 89%. The best
organic removal were obtained at the lowest COD loading rate and the longest HRT in phase one and two which was equal to 92% and 94% respectively. It was found that the
anaerobic/anoxic/aerobic attached bioreactor with Cosmo-Ball as the media with
significant acclimatizing and transition period for bacteria growth has succeeded in
removing nitrogen and organic from diluted young leachate with high amount of COD
and low amount of nitrogen. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Movahed, Bahareh Sanaie |
| author_facet |
Movahed, Bahareh Sanaie |
| author_sort |
Movahed, Bahareh Sanaie |
| title |
Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| title_short |
Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| title_full |
Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| title_fullStr |
Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| title_full_unstemmed |
Removal of Organic and Nutrients in Young Leachate Using Combined Anaerobic/Anoxic/Aerobic Attachedgrowth Bioreactor |
| title_sort |
removal of organic and nutrients in young leachate using combined anaerobic/anoxic/aerobic attachedgrowth bioreactor |
| granting_institution |
Universiti Putra Malaysia |
| granting_department |
Faculty of Engineering |
| publishDate |
2009 |
| url |
http://psasir.upm.edu.my/id/eprint/7331/1/FK_2009_17a.pdf |
| _version_ |
1747810688622919680 |