锰细菌的选育及其固定化除锰  

Breeding of Manganese-oxidizing Bacteria and Application of Manganese Removal by Immobilization Technology

作　　者：张凤君[1] 王斯佳[1] 钟爽[1] 吴连峰[1] 朱彧 

机构地区：[1]吉林大学环境与资源学院,长春130061

出　　处：《科技导报》2011年第9期26-30,共5页Science & Technology Review

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07207-007-04);吉林省科技厅项目(20090563)

摘　　要：从成熟滤柱中成功筛选出3种具有去除Mn2+效果较强的革兰氏阳性细菌,并对其生理生化特性进行详细研究。3种菌体适宜生长的pH值和温度范围很广,在富营养和贫营养条件下都可以良好生长,并对Mn2+去除效果很好,去除率均在86%以上,去除率增高阶段对应菌体的对数生长期阶段。采用聚乙烯醇和海藻酸钠混合包埋的方法将菌体包埋,制成的固定化颗粒机械强度高,传质性能好;固定化颗粒与廉价河砂混合填埋的柱子对贫营养模拟水中的Mn2+去除效果很好,3种菌体最大去除率均大于85.6%。Manganese is one of most important elements for the people health,but drinking water with excess manganese will cause chronic poisoning for the people.Thus there is a need for developing effective manganese removal method in the water treatment.Due to the high efficiency and low cost,biological manganese removal technology has been investigated and applied to many cases.The manganese removal is achieved in here by oxidizing Mn^2＋ bacteria.Three high manganese oxidizing bacteria which were gram-positive were screened from the mature filtration column and their physiological and biochemical characteristics were investigated.All three bacteria can grow well in wide range of pH and temperature.The removal efficiency of Mn^2＋ by these bacteria could reach at more than 86% in both eutrophic and oligotrophic conditions.The removal efficiency of Mn^2＋ is increased with time in the logarithmic stage.The cells are embedded with the mixed PVA and Alginate.The results show the high mechanical strength and good mass transfer performance.The maximum removal rates of Mn^2＋ by the three bacteria are all above 85.6% when the columns are filled with the mixed immobilized balls and the low-cost river sand.

关 键 词：锰氧化细菌 筛选 生物学特性 除锰 固定化 

分 类 号：TU991.2[建筑科学—市政工程]