水产养殖废水中1株高营养价值栅藻的生长及氮磷去除特性的研究  

Study on Growth,Removal Property of nitrogen and Phosphorus of High-nutrient-value Scenedesmus sp.Growing in Aquaculture Wastewater

作　　者：马红芳[1,2] 庄黎宁[1] MA Hongfang ZHUANG Lining(College of Civil Engineering, Huaqiao University, Xiamen 361021, China College of Chemical Engineering, Huaqiao University, Xiamen 361021, China)

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]华侨大学化工学院,福建厦门361021

出　　处：《贵州大学学报（自然科学版）》2017年第4期119-125,共7页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金面上项目(51678255);福建省自然科学基金项目(2014J01196)

摘　　要：利用废水培养营养价值微藻,既可以去除废水中的氮、磷污染物,又可以获得用作生物饵料或饲料蛋白源的藻体资源。文章研究了用水产养殖废水培养1株高营养价值栅藻(Scenedesmus sp.)时的生长和脱氮除磷特性。结果表明,废水中该栅藻的内禀生长速率为0.342 d-1、最大藻密度为2.07×107个·m L-1、最大生物量增长速率为1.77×106个·(m L·d)-1。与其在培养基中的生长相比,该栅藻在水产养殖废水中也能快速生长。培养至稳定期后,栅藻对水产养殖废水中的TN、TP的去除率分别为87.4%和94.5%,对NH_4^+-N、NO_2^--N、NO_3^--N的去除率分别为95.6%、89.4%和85.5%。由此可见,该栅藻在净化水产养殖废水方面具有很好的脱氮除磷效果。Treating wastewater by high-nutrient-value microalgae can not only remove nitrogen and phosphorus in wastewater,but also produce algal resources being used as aquatic bait and feed. A newly isolated high-nutrientvalue microalgae,Scenedesmus sp. was studied concerning its growth and removal property of nitrogen and phosphorus while being cultured in aquaculture wastewater. Results show that the specific growth rate of Scenedesmus sp. was 0.342 d-1,its maximum algal density was 2.07×107cells·m L-1and its maximum population growth rate was 1.77×106cells·（ m L·d）-1. Compared with the growth in the culture medium,Scenedesmus sp. can also grow rapidly in aquaculture wastewater. At stationary phase of training, removal efficiencies of TN and TP in wastewater by Scenedesmus sp. were 87.4% and 94.5%,respectively,and removal efficiencies of ammonium,nitrite and nitrate by Scenedesmus sp. were 95. 6%,89. 4% and 85. 5%,respectively. Thus it can be seen that Scenedesmus sp. has a strong removal effect of nitrogen and phosphorus in the purification of aquaculture wastewater.

关 键 词：高营养价值栅藻 水产养殖废水 生长 脱氮除磷 选择吸收性 

分 类 号：X703[环境科学与工程—环境工程] X172