Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan.
Bioresour Technol. 2012 Jun;113:165-8. doi: 10.1016/j.biortech.2011.12.107. Epub 2011 Dec 27.
In this study, the influence of powdered activated carbon (PAC) and cationic polymer (MPE50) was investigated on the fouling propensity in hybrid MBRs. Three laboratory scale MBRs were operated simultaneously including MBR(Control), MBR(PAC), and MBR(Polymer). Optimum dosages of PAC and polymer to the MBR(PAC) and MBR(Polymer), respectively were determined using jar tests. It was found that the MBR(PAC) exhibited low fouling tendency and prolonged filtration as compared to the other MBRs. Improved filtration in MBR(PAC) was attributed to the flocculation and adsorption phenomena. The effective stability of the biomass by PAC in the form of biological activated carbon (BAC) was verified by the increase in mean particle size. The BAC aided sludge layer exhibited porous cake structure resulting in the prolong filtration. However, both the membrane hybrid systems revealed effective adsorption of organic matter by 40% reduction in the soluble EPS concentration.
在这项研究中，考察了粉末活性炭 (PAC) 和阳离子聚合物 (MPE50) 对混合膜生物反应器中结垢倾向的影响。同时运行了三个实验室规模的 MBR，包括 MBR（对照）、MBR（PAC）和 MBR（聚合物）。通过 jar 试验确定了 PAC 和聚合物对 MBR（PAC）和 MBR（聚合物）的最佳投加量。结果表明，与其他 MBR 相比，MBR（PAC）表现出低结垢倾向和延长的过滤时间。MBR（PAC）中的过滤效果得到改善归因于絮凝和吸附现象。通过增加平均粒径验证了 PAC 形式的生物活性炭 (BAC) 对生物量的有效稳定性。BAC 辅助的污泥层呈现多孔饼状结构，导致过滤时间延长。然而，两种膜混合系统都通过可溶 EPS 浓度降低 40% 有效地吸附了有机物。
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