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Carbon membrane-aerated biofilm reactor for synthetic wastewater treatment

机译：碳膜曝气生物膜反应器处理合成废水

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A carbon membrane-aerated biofilm reactor (CMABR) was developed to treat synthetic waste-water. Such membrane exhibited a high degree of adhesion and good permeability. Continuous experiments showed that COD and NH_4~+ -N removal efficiency were 90 ± 2 and 92 ± 4% at removal rates of 35.6 ± 3.8 g COD/m~2 per day and 9.3 ± 0.6 g NH_4~+ -N/ m~2 per day, respectively. After 108 days, effluent total nitrogen (TN) kept at 35 + 4 mg/L when influent NH_4~+ -N increased to 144-164 mg/L and removal efficiency of TN reached 78 ± 3%. Furthermore, Stoichiometric analysis revealed that 70-90% of oxygen supplied was consumed by nitrifier. Scanning electron microscopic (SEM) images and component analysis of penetrating fluid revealed that extracellular polymeric substance (EPS) adhered to pore and that alkaline washing was an effective method to remove them. The study demonstrated that carbon membrane could be used as effective gas-permeable membrane in MABR for wastewater treatment.
机译：碳膜曝气生物膜反应器（CMABR）被开发用于处理合成废水。这种膜表现出高度的粘附性和良好的渗透性。连续实验表明，COD和NH_4〜+ -N去除率分别为每天35.6±3.8 g COD / m〜2和9.3±0.6 g NH_4〜+ -N / m〜的去除率分别为90±2和92±4％。每天2次。 108天后，当进水NH_4〜+ -N增加至144-164 mg / L时，出水总氮（TN）保持在35 + 4 mg / L，而总氮的去除效率达到78±3％。此外，化学计量分析显示硝化器消耗了70-90％的氧气。扫描电子显微镜（SEM）图像和渗透液的成分分析表明，细胞外聚合物（EPS）附着在孔上，碱洗是去除它们的有效方法。研究表明，碳膜可作为MABR处理废水的有效透气膜。

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