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微生物絮凝剂产生菌的培养条件研究

Study on culture conditions of a bio-flocculant-producing strain

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【作者】 张平戴友芝唐受印

【Author】 Zhang Ping(Faculty of Resource and Environment,Central South Forestry University, Changsha 410004)Dai Youzhi(Department of Environmental Engineering, Xiangtan University, Xiangtan 411105) Tang Shouyin (Hunan Institute of Engineering, Xingtan 411104)

【机构】 中南林学院资源与环境学院湘潭大学环境工程系湖南工程学院 长沙410004湘潭411105湘潭411104

【摘要】 从活性污泥中分离筛选到1株高效絮凝剂产生菌E 9,初步鉴定其为大肠杆菌。首次发现大肠杆菌能产生微生物絮凝剂。该菌产生絮凝剂的适宜培养条件为:乙醇为碳源,大豆粉为氮源,初始pH值为6. 5~7 .2、温度为30℃。絮凝实验结果表明,该菌产絮凝剂对高岭土悬浊液的絮凝率可达97% ~99. 5%,而絮凝剂投加量仅为通用发酵培养基的1 /15,絮凝效果优于聚丙烯酰胺等常用絮凝剂。

【Abstract】 A bacterial strain designated as E.coli and named E-9 which can produce bio-flocculant with high flocculanting activity was screened from activated sludge .It is the first time to find that E.coli producing bioflocculant. The optimum culture conditions:alcohol is the optimum carbon source, soybean powder is the optimum nitrogen source, initial pH 6.5~7.2, 30 ℃.The results of flocculation test show that the E-9 can produce a strong-activity flocculants, which has higher flocculating effect compared with other ordinary flocculants, with flocculating rate of 97%~99.5% against kaolin clay suspension, and its dose is about 1/15 of the ferment media.

【基金】 湖南省计委资助项目(湘计高技[2001]907号)
  • 【文献出处】 环境污染治理技术与设备 ,Techniques and Equipment for Environmental Pollution Control , 编辑部邮箱 ,2005年04期
  • 【分类号】X703.5
  • 【被引频次】33
  • 【下载频次】241
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