Lü Liang, You Wen, Wei Jia-Min, Wu Peng, Shen Yao-Liang
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
Jiangsu Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou 215009, China.
Huan Jing Ke Xue. 2018 Jan 8;39(1):239-246. doi: 10.13227/j.hjkx.201707072.
The effect of volume loading rate (VLR) on denitrifying phosphorus removal was investigated in a continuous-flow ABR-MBR combined process treating domestic wastewater to arrive at optimum process parameters. In the experiment, the VLR of the ABR was set at 0.76, 1.01, 1.51, and 2.27 kg·(m·d). The removal of carbon, nitrogen, and phosphorus in the system and the effect of the VLR in the MBR on nitrification performance were observed for each VLR of the ABR. The results showed that under the condition when the VLR of the ABR was 1.51 kg·(m·d), the amount of COD removal in the A2 chamber was the largest, and shortcut nitrification was achieved in the MBR when the VLR of the MBR was 1.51 kg·(m·d). Meanwhile, the removal efficiency of NH-N and TN reached more than 90% and 72%, respectively, the anaerobic P-release and anoxic P-uptake were 7.41 mg·Land 15.42 mg·L, respectively, and the concentration of PO-P in effluent was lower than 0.5 mg·L, which indicated that the shortcut nitrification was more conducive to strengthening the performance of denitrifying phosphorus removal in the ABR-MBR system.
在连续流ABR-MBR组合工艺处理生活污水的过程中，研究了容积负荷率（VLR）对反硝化除磷的影响，以确定最佳工艺参数。实验中，ABR的VLR设置为0.76、1.01、1.51和2.27kg·(m·d)。针对ABR的每个VLR，观察系统中碳、氮、磷的去除情况以及MBR中VLR对硝化性能的影响。结果表明，当ABR的VLR为1.51kg·(m·d)时，A2池的COD去除量最大，且当MBR的VLR为1.51kg·(m·d)时，MBR中实现了短程硝化。同时，NH-N和TN的去除效率分别达到90%以上和72%以上，厌氧释磷量和缺氧吸磷量分别为7.41mg·L和15.42mg·L，出水PO-P浓度低于0.5mg·L，这表明短程硝化更有利于强化ABR-MBR系统的反硝化除磷性能。
