Kanty  Driantami, Setyo S.  Moersidik, 
    The Performance of Ammonia Nitrogen Removal by using Membrane-Aerated Biofilm Reactor as Domestic Wastewater Treatment,
    Journal of Engineering and Applied Sciences,
    Volume 12,Issue 18,
    2017,
    Pages 4759-4764,
    ISSN 1816-949x,
    jeasci.2017.4759.4764,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2017.4759.4764)
    Abstract: High concentration of NH<SUB>3</SUB>-N in wastewater discharges from sewage treatment plant can cause eutrophication of the surface water that has the negative impacts for aquatic ecosystems. Membrane-Aerated Biofilm Reactor (MABR) has been proposed as a wastewater technology to reduce NH<SUB>3</SUB>-N concentration in domestic wastewater. This study observed the performance of NH<SUB>3</SUB>-N removal in domestic wastewater using MABR. Domestic wastewater contains concentration of NH<SUB>3</SUB>-N from 73-104.8 mg/L (0.12-0.24 kg NH<SUB>3</SUB>-N/m<SUP>3</SUP>.d) and COD from 332-468 mg/L (0.56-1.05 kg COD/m<SUP>3</SUP>d). MABR was supplied by oxygen at the pressure of 20 kPa and study performed for 3 Hydraulic loading rate (HRT) variations which were 8, 10 and 12 h. After 33 days of running, the result showed COD/N ratio were about 3.9-5.72 with maximum efficiency of COD and NH<SUB>3</SUB>-N removal occurred when HRT 12 h, reached 88 and 89.58%, respectively. This indicated that NH<SUB>3</SUB>-N could remove by MABRat low COD/N ratio. Furthermore, autotrophs bacteria that responsible for oxidized NH<SUB>3</SUB>-N to NO<SUB>2</SUB><SUP>&#150;</SUP> and NO<SUB>3</SUB><SUP>&#150;</SUP> have slower growth rates compared with heterotrophs bacteria. Thus, longer HRT provided benefit for nitrification process and high NH<SUB>3</SUB>-N removal efficiency has been achieved.
    Keywords: Membrane aerated biofilm reactor;ammonia nitrogen removal;domestic wastewater;autotrophs bacteria;hydraulic retention time;Indonesia