The main objective of this study is to evaluate two wastewater treatment methods that are implemented at a sewage treatment plant (STP) in Oman; Conventional Activated Sludge (CAS) and Membrane Bioreactor Technology (MBR). The CAS STP receives its domestic wastewater through tankers while MBR STP receives its wastewater through sewer network. Samples from influent raw sewage, biological aeration tank and treated effluent from both systems were analyzed for physical, chemical and biological properties. The obtained results showed that the raw sewage of the CAS STP can be categorized as high strength concentration compared to medium strength concentration for the MBR STP. The removal efficiency achieved at the CAS plant for TSS, TN and BOD are 97%, 57% and 98% respectively. The accomplished removal efficiency by the MBR plant is 98%, 82% and 98% for TSS, TN and BOD, respectively. However, the removed amounts of the TSS, TN and BOD in the CAS plant were 437, 40 and 442 kg per 1000 m~3, respectively, compared to 147, 37 and 206 kg per 1000 m~3 respectively, for the MBR plant. Thus, the CAS plant was able to remove higher amounts of pollutants compared to the MBR plant.
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机译：这项研究的主要目的是评估在阿曼的污水处理厂（STP）实施的两种废水处理方法。常规活性污泥（CAS）和膜生物反应器技术（MBR）。 CAS STP通过油轮接收生活污水，而MBR STP通过下水道网络接收污水。分析了来自两个系统的进水原污水，生物曝气池和处理过的废水的样品的物理，化学和生物学特性。获得的结果表明，与MBR STP的中等强度浓度相比，CAS STP的原污水可以归为高强度浓度。在CAS工厂中，TSS，TN和BOD的去除效率分别为97％，57％和98％。对于TSS，TN和BOD，MBR工厂完成的去除效率分别为98％，82％和98％。但是，CAS工厂中TSS，TN和BOD的去除量分别为每1000 m〜3 437、40和442 kg，而MBR工厂分别为147、37和206 kg / 1000 m〜3。 。因此，与MBR工厂相比，CAS工厂能够去除更多的污染物。
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