光合细菌固定化及其对铜绿微囊藻的抑制.PDF

第42卷第6期 河 海 大 学 学 报 ( 自然 科 学 版 ) Vol.42 No.6 2014年11月 Journal of Hohai University(Natural Sciences) Nov. 2014 DOI:10.3876/ j.issn.1000 1980.2014.06.003 光合细菌固定化及其对铜绿微囊藻的抑制 1,2 1,2 1,2 吴摇 珊 ,任丽艳 ,厉智成 (1.北京工业大学建筑工程学院,北京摇 100124;2.北京市水质科学与水环境恢复工程重点实验室,北京摇 100124) 摘要:为探讨光合细菌固定化后对铜绿微囊藻的抑制作用,比较了光合细菌的5 种不同固定化方 法及其特性,确定了最佳的固定化方法;在实验室条件下进行菌藻共同培养,通过试验研究了固定 化后的光合细菌与游离光合细菌对铜绿微囊藻生长的影响差异并确定了固定化光合细菌的最佳投 加量。 结果表明:采用沸石、碳酸钙和海藻酸钠混合包埋光合细菌的固定化方法最佳;固定化光合 细菌对铜绿微囊藻抑制作用显著,为83郾55%,而相同量的游离光合细菌的抑制作用只有26郾81%; 最佳固定化光合细菌投加量为36g/ L。 关键词:细菌固定化技术;光合细菌;铜绿微囊藻;抑制效应 中图分类号:TU992郾3摇 摇 摇 文献标志码:A摇 摇 摇 文章编号:1000 1980(2014)06 0481 05 Inhibiting effect of immobilized photosynthetic bacteria on Microcystis aeruginosa 1,2 1,2 1,2 WU Shan ,REN Liyan ,LI Zhicheng (1. College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China; 2. Key Laboratory of Beijingfor Water Quality Science and Water Environment Restoration Engineering, Beijing 100124,China) Abstract:The inhibiting effects of immobilized photosynthetic bacteria on Microcystis aeruginosa were investigated in this study. First, through comparison of five immobilization methods and their features, the optimal immobilization method was determined. Then,photosynthetic bacteria and Microcystis aeruginosa were co鄄cultured through laboratory experiments. After the experiments, the impacts of immobilized photosynthetic bacteria and mobile photosynthetic bacteria on the growth of Microcystis aeruginosa were studied, and the optimal dosage of immobilized photosyntheti