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Batch study of nitrification and cod removal in a submerged membrane bioreactor

Batch study of nitrification and cod removal in a submerged membrane bioreactor / Herman Mojiun
Kelebihan sistem bio-reaktor tenggelam dari segi sisa karbon yang rendah, keperluan tenaga yang rendah, operasi serta pengubahsuaian yang mudah telah menjadi kriteria yang membantu teknologi ini menjadi tumpuan dalam industri. Oleh itu, kajian ini dijalankan untuk pemahaman yang lebih lanjut mengenai proses serta pengesahan kepada prestasi sistem ini dalam penyingkiran COD dan ammonia. Dengan kajian ini, ia boleh menjadi penyelidikan asas untuk kajian lanjut mengenai kesan parameter lain terhadap prestasi system ini. Dalam kajian ini, sistem bioreaktor membran tenggelam telah digunakan secara proses aerobik kelompok dalam kajian penyingkiran COD dan NH3. Mikroorganisma alam sekitar yang telah diaklimatisi telah diuji dengan menambah kandungan COD dan NH3 dalam tangki, masing-masing melalui penggunaan sirap pekat dan ammonium nitrat. Keputusan menunjukkan bahawa tahap COD boleh dikurangkan daripada 800mg / L hingga 74 mg / L dalam masa 52 jam operasi . Sebaliknya, masa 2 minggu diperlukan untuk mengurangkan NH4 daripada 44 mg / L kepada 2.5 mg / L. Keputusan menunjukkan bahawa pertumbuhan biojisim serta keupayaan pengoksidaan NH3 oleh sistem ini dipengaruhi oleh kehadiran sumber karbon. Selain itu, kajian ini juga mendapati bahawa kemungkinan penitritan serentak dan de-penitritan berlaku dalam sistem melalui analisis kehilangan nitrat semasa experiment. _______________________________________________________________________________________________________ Submerged Membrane Bioreactor has been one of the most popular biological treatment methods for waste water. The advantages in terms of low footprints, low energy requirement, easy operation as well as easy retrofit has been the criteria that has given this technology the highlights in industry. Therefore, for further understanding on the process as well as for the verification on the SMBR performance in the removal of COD and ammonia, this study was done. With this research, it is intended that it can be the base research for further studies on the effect of other parameters on SMBR. In this research, a submerged membrane bioreactor was run in batch system and employed in the removal study of COD and ammonia. The acclimated environmental microorganisms were tested with the loading of COD and ammonia by using molasses and ammonium nitrate respectively. This research was done only in aerobic condition and the results show that COD level can be reduced from 800mg/L to 74 mg/L in 52 hours of batch operation. On the other hand, 2 weeks time is required to reduce the ammonia from 40 mg/L to 2.5 mg/L. The results show that the biomass growth as well as the ammonia oxidation capability of the system was largely governed by the presence of carbon sources for the microbes. It is also found that the possibility of simultaneous nitrification and de-nitrification taking place in the system shown by the nitrate losses.
Contributor(s):
Herman Mojiun - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 8750005187
Language:
English
Subject Keywords:
Bioreactor; treatment; wastewater
First presented to the public:
6/1/2013
Original Publication Date:
1/29/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 65
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-01-30 16:56:59.774
Submitter:
Mohd Jasnizam Mohd Salleh

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