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.
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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.
Batch study of nitrification and cod removal in a submerged membrane bioreactor / Herman Mojiun