摘要
从取自不同电厂成熟锰砂表面的活性滤膜中分离出7种细菌,经鉴定分别属于纤发菌属、球衣菌属、鞘铁细菌属.研究表明,这3个菌属的微生物对水中Fe2+都具有较好的去除效果,其中鞘铁细菌1号对铁的去除效果最好;纤发菌和鞘铁细菌对水中Mn2+都具有良好的去除效果,其中鞘铁细菌1号的去除能力最强,鞘铁细菌2号次之.将分别培养的具有氧化铁锰能力的纤发菌、球衣菌、鞘铁细菌1号和鞘铁细菌2号混合,然后接种于锰砂滤料表面,以含铁、锰的地下水进行挂膜培养,生物滤柱经20 d培养后趋于成熟,成熟后的生物滤柱对铁、锰的去除率均接近100%,且运行稳定.
Seven strains of bacteria which were separated from the active membrane on the mature manganese sand which are from different power plants. After identifying they are Leptothrix, Sphaerotilus and Siderocapsa. Studies show that the three strains of bacteria have a better removal of Fe^2＋ , in which Siderocapsa No. 1 is the best. Leptothrix and Siderocapsa have a good removal of Mn^2＋ , Siderocapsa No. 1 has the highest removal rate for Mn^2＋, Siderocapsa No. 2 is secondary. The mixture of separately cultured Leptothrix, Sphaerotilus, Siderocapsa No. 1 and Siderocapsa No. 2 which can remove iron and manganese were inoculated on the surface of manganese sand filter. Biofilm culturing with groundwater concentrations iron and manganese. The biological filter column has tended to maturate after 20d cultured. Test result indicates that the mature biological filter column can get rid of Fe^2＋ and Mn^2＋ nearly 100% and the biological filter column can run stably.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2011年第1期125-129,共5页
Environmental Science
基金
国家重点基础研究发展规划(973)项目(2007CB206904)
关键词
成熟锰砂
细菌分离
菌种鉴定
铁锰的氧化
mature manganese sand
separation of bacteria
strain identification
oxidation of Fe^2＋ and Mn^2＋
