初始密度及饥饿对栅藻LX1氮磷去除的影响  

EFFECT OF INITIAL CELL DENSITIES AND STARVATION TREATMENT ON THE NITROGEN,PHOSPHORUS REMOVAL PROPERTIES OF SCENEDESMUS SP. LX1

作　　者：汤会军[1] 李鑫[2] 胡洪营[2] 甘柯[1] 关东明[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]清华大学环境科学与工程系,环境模拟与污染控制国家重点联合试验室,北京100084

出　　处：《水处理技术》2010年第7期33-35,39,共4页Technology of Water Treatment

基　　金：国家杰出青年科学基金(50825801)

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(0.125×106～12.5×106个·mL-1),初始密度为12.5×106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-·1d-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-·1d-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。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.

关 键 词：栅藻 氮磷去除 初始密度 饥饿处理 

分 类 号：X703.1[环境科学与工程—环境工程]