评价海绵托盘-膜生物反应器（ST-MBR）对一级处理污水的处理效果。
Evaluation of sponge tray-membrane bioreactor (ST-MBR) for primary treated sewage effluent treatment.
机构信息
School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
出版信息
Bioresour Technol. 2012 Jun;113:143-7. doi: 10.1016/j.biortech.2011.11.132. Epub 2011 Dec 8.
The membrane bioreactor system (MBR) with pre-treatment of sponge tray bioreactor (STB) was evaluated at different operating conditions for treating primary treated sewage (PTS). The result indicated the successful removal of DOC with the efficiency of higher than 95%. The highest nutrient removal efficiency of 83.6% (NH(4)-N) and 75.5% (PO(4)-P) was observed at sludge concentration of 330 mg/L. Specific oxygen uptake rate (SOUR) of activated sludge in MBR kept increasing up to 6 mg O(2)/g VSS h during stage IV. The sludge volume index (SVI) of less than 100mL/g during the operation indicated the good settling property of the sludge. At highest sludge concentration of 5 g/L, trans-membrane pressure (TMP) was increasing dramatically during first 15 d up to 25 kPa; however it was only 6 kPa at lower sludge concentrations. It is concluded that the system showed the highest performance at stage III with sludge concentration of 330 mg/L.
采用内置海绵生物转盘（STB）预处理的膜生物反应器（MBR）系统在不同运行条件下对原水（PTS）进行处理，结果表明，DOC 的去除率超过 95%。在污泥浓度为 330mg/L 时，观察到最高的营养物去除效率为 83.6%（NH4-N）和 75.5%（PO4-P）。在第四阶段，MBR 中的活性污泥比需氧量（SOUR）持续增加，最高达到 6mgO2/gVSS h。运行过程中污泥体积指数（SVI）小于 100mL/g，表明污泥沉降性能良好。在最高污泥浓度为 5g/L 的情况下，跨膜压力（TMP）在最初 15d 内急剧上升至 25kPa；然而，在较低的污泥浓度下，TMP 仅为 6kPa。可以得出结论，该系统在污泥浓度为 330mg/L 的第三阶段表现出最高的性能。
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