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Ammoniacal Nitrogen Removal in Semiconductor Wastewater by Sequence Batch Reactor Using Bacteria Inoculum from WormTea

Nur Farehah Z. A.1, Norli I., Siti Norfariha M. N., Siti Aisyah I., and Renuka R.
Division of Environmental Technology, School of Industrial Technology, Universiti Sains Malaysia, Penang, Malaysia
Abstract—Two condition of treatment (aerobic and anaerobic) environment in SBR were applied. Three isolated bacteria from worm tea have been used in the semiconductor wastewater treatment; there are Bacillus pumilus, Micrococcus lutues and Staphylococcus warnaeri. The SBR were monitored 30 days, using synthetic semiconductor wastewater in the treatment which contained high concentration amount of NH3N, 1000mg/L. The results showed efficiencies of removal of ammoniacal nitrogen by Staphylococcus warneri is 97.2% which remained NH3N 30 mg/L, Bacillus pumilus is 60.7% and Micrococcus lutues is 79.2% respectively, and the highest microbial density of S. warneri was about 3.02 (optical density).
 
Index Terms—Ammoniacal nitrogen, nitrify, denitrify, sequence batch reactor, semiconductor wastewater

Cite: Nur Farehah Z. A.1, Norli I., Siti Norfariha M. N., Siti Aisyah I., and Renuka R., "Ammoniacal Nitrogen Removal in Semiconductor Wastewater by Sequence Batch Reactor Using Bacteria Inoculum from WormTea," Journal of Medical and Bioengineering, Vol. 3, No. 4, pp. 241-244, December 2014. Doi: 10.12720/jomb.3.4.241-244
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