中文摘要：

研究了初始密度、饥饿处理对栅藻LX1（Scenedesmus sp. LX1）氮磷去除的影响,以探索微藻去除氮磷的强化手段。在本研究范围以内（0.125×10^6～12.5×10^6个·mL^-1）,初始密度为12.5×10^6个·mL^-1的栅藻LX1对氮磷的去除效果最好,培养3d后对TN、TP的去除率分别达到了74.7%和100%;去除速率分别为3.73、0.67mg·L^-1·d^-1;饥饿处理3d的栅藻LX1生长良好,培养5d后对TN、TP的去除率分别达到了51.3%、82.2%,去除速率分别为1.54、0.33mg·L^-1·d^-1,分别比对照增加了24.4%和60.2%。高初始密度和饥饿处理有利于提高栅藻LX1对氮磷的去除效果。

英文摘要：

The effects of initial cell densities and starvation treatment on the nitrogen,phosphorus removal properties of Scenedesmus sp.LX1 were studied to explore methods for increasing removal efficiencies.In the studied range of 0.125×10^6～12.5×10^6 mL^-1,the nitrogen and phosphorus removal efficiencies of Scenedesmus sp.LX1 with initial cell density of 12.5×10^6 mL^-1 were the best,after a culture period of 3 d the TN and TP removal efficiencies were 74.7% and 100%,and the removal rates were 3.73 and 0.67 mg·L^-1·d^-1 respectively.Scenedesmus sp.LX1 grew well after a starvation period of 3 d,and after a culture period of 5 d the TN and TP removal efficiencies were 51.3% and 82.2%,the removal rates were 1.54 and 0.33 mg·L^-1·d^-1 respectively,higher than those of the control group by 24.4% and 60.2% respectively.It is concluded that high initial cell densities and starvation treatment are beneficial to enhance the nitrogen and phosphorus removal efficiencies of Scenedesmus sp.LX1.