不同氮磷浓度下2种无毒微藻的生长特性和脱氮除磷效能  

Growth characteristics and removal efficiency of nitrogen and phosphorus of two kinds of non-toxic microalgae under different nitrogen and phosphorus concentrations

作　　者：章斐[1] 陈秀荣[1] 江子建 王璐[1] 何怡萱[1] 鲍征[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237

出　　处：《环境工程学报》2015年第2期559-566,共8页Chinese Journal of Environmental Engineering

基　　金：上海市浦江人才计划项目(13PJD009);国家自然科学基金资助项目(51378207);国家"水体污染控制与治理"科技重大专项(2014ZX07202-011-002)

摘　　要：根据城市二级出水水质特性,选择4种不同氮磷水平的二级出水作为培养基,研究纯培养与共培养下,椭圆小球藻(Chlorella ellipsoidea)和斜生栅藻(Scenedesmus obliquus)在不同初始氮磷浓度下的生长状况及脱氮除磷的能力。结果表明,纯培养条件下,椭圆小球藻在2#(TN=15.00 mg/L,TP=1.00 mg/L)实验组中生物量最高,斜生栅藻在4#(TN=10.00 mg/L,TP=0.20 mg/L)实验组中收获最大生物量,椭圆小球藻与斜生栅藻对TP均具有70%以上去除率。共培养下,3#(TN=15.00 mg/L,TP=0.50 mg/L)实验组收获最高生物量,斜生栅藻生物量均高于椭圆小球藻,表明斜生栅藻在共培养条件下更具有生长优势,培养基中TN、TP含量分别降至5.00 mg/L和0.05 mg/L以下。2种培养模式均可达到对二级出水的深度脱氮除磷。Chlorella ellipsoidea and Scenedesmus obliquus were cultured in different initial nitrogen and phosphorus concentrations based on second effluent to investigate the growth characteristics of the two kinds of microalgae and their abilities of nitrogen and phosphorus removal.The results showed that Chlorella ellipsoidea got the highest biomass under the test of 2 #,Scenedesmus obliquus got the highest biomass under the test of 4 #under pure culture.The total phosphorus(TP) removal rates of Chlorella ellipsoidea and Scenedesmus obliquus were both higher than 70%.The two kinds of microalgae got the highest biomass under the test of 3 # under mixed culture.The biomass of Scenedesmus obliquus was higher than Chlorella ellipsoidea,indicated that Scenedesmus obliquus took the growth advantage under the mixed culture.the total nitrogen(TN) and TP contents in the medium were lower than 5.00 mg/L and 0.05 mg/L.This study implies that the two kinds of non-toxic microalgae both can make the deep denitrification and phosphorus removal under pure or mixed culture.

关 键 词：椭圆小球藻 斜生栅藻 二级出水 脱氮除磷 

分 类 号：X173[环境科学与工程—环境科学] X703