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Wastewater treatment using membrane bioreactor and reverse osmosis process

机译：使用膜生物反应器和反渗透工艺处理废水

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摘要

The objective of this study was to investigate the effect of hydraulic retention time (HRT) on removal efficiencies of organic matter, nitrogen, and phosphorus in membrane bioreactors-reverse osmosis (MBR-RO) process for treating synthetic sewage. In MBR process, turbidity was less than average 2 NTU and average removal efficiency showed more than 99% during the operational period (MBR 105 day). As a result of HRT variation, average removal efficiencies of COD_(Cr) on HRT 6, 12, 18, and 24 h were about 72.4, 84, 88.6, and 92.5%, respectively. The NH_4~+-N removal efficiency was about 60.2, 85.5, 91.3, and 92.2%, respectively. TN and TP removal efficiencies increased from 53.7 and 56.8 to 82.5 and 86.4%, respectively, as the HRT increased from 6 to 24 h. In RO process, average removal efficiencies of color and COD_(Cr) in RO permeated water were about 99.9 and 96.8%, respectively. Also, removal efficiencies of TN, NH_4~+-N, NH_4~+-N, and TP were all above average 90%.
机译：这项研究的目的是研究水力停留时间（HRT）对膜生物反应器-反渗透（MBR-RO）工艺处理合成污水中有机物，氮和磷的去除效率的影响。在MBR过程中，在操作期间（MBR 105天），浊度小于平均2 NTU，平均去除效率显示超过99％。由于HRT的变化，COD_（Cr）在HRT 6、12、18和24 h上的平均去除效率分别约为72.4、84、88.6和92.5％。 NH_4〜+ -N去除效率分别约为60.2％，85.5、91.3和92.2％。随着HRT从6小时增加到24小时，TN和TP的去除效率分别从53.7和56.8提高到82.5和86.4％。在反渗透过程中，反渗透渗透水中颜色和COD_（Cr）的平均去除率分别约为99.9和96.8％。此外，TN，NH_4〜+ -N，NH_4〜+ -N和TP的去除效率均高于平均90％。

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