The College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Water Sci Technol. 2012;66(9):2014-9. doi: 10.2166/wst.2012.412.
A new method based on rotating biological contactor (RBC) was employed for solving the problems of long hydraulic retention times (HRT) low specific surface area and organic loading rates (OLR) in conventional RBCs. The system showed its particular adsorption ability of microorganisms in the biofilm-attaching period. Microbes on the first cage were observed in comparison with the second one. Packing biodisc also had a good shock load tolerance. It was observed that the system performance improved at higher HRTs, while at the increased level of input OLR, the removal performance worsened slightly. The positive role of rotational speed in the treatment of municipal wastewater was more pronounced in the range of 10-12 rpm. Chemical oxygen demand (COD) removal rate achieved 94% under the optimal operating conditions, which were HRT of 1.5 h, rotational speed of 9.9 rpm. The modified RBC system is highly beneficial to engineering application for better system performance and lower energy consumption.
采用一种基于旋转生物接触器（RBC）的新方法来解决传统 RBC 中水力停留时间（HRT）长、比表面积和有机负荷率（OLR）低的问题。该系统在生物膜附着期表现出了微生物的特殊吸附能力。与第二个笼子相比，观察到第一个笼子上的微生物。包装生物转盘也具有良好的抗冲击负荷能力。观察到在更高的 HRT 下，系统性能得到提高，而在输入 OLR 增加的情况下，去除性能略有恶化。在 10-12 rpm 的范围内，转速在处理城市污水方面的积极作用更为明显。在最佳运行条件下，COD 去除率达到 94%，最佳运行条件为 HRT 为 1.5 h，转速为 9.9 rpm。改进后的 RBC 系统非常有利于工程应用，因为它具有更好的系统性能和更低的能耗。
