Functions of Bacillus Subtilis BS7.29 in Wasterwater Treatment

摘要：

Bacillus subtilis (B. subtilis) is a kind of Grampositive bacteria possessing multiple enzyme systems, which might be useful in wastewater treatment. In this paper, in order to confirm whether Bacillus subtilis BS7.29, a novel strain isolated from soil in our previous work, could be applied in the wastewater treatment, its effects on assimilation of ammonium, transformation of nitrite, and degradation of pectin were investigated. The results showed that the content of NH3-N and NO2-N in aquaculture water decreased with time increasing after being treated with B. subtilis BS7.29. Furthermore, when the secretion enzyme extracted from this bacterium was used to treat the paper-making white water, it could reduce CD and turbidit, decrease the size of colloidal substances and promote the deposition. These findings suggested that B. subtilis BS7.29 might be valuable in the wastewater treatment, and contribute to the development of biological purification of industrial effluents.

关键词： Bacillus subtilis Pectinase White water Cationic demand

作者: Jun-Xun Li Xue-Gang Luo Yu Guo Jing Xiao Jie Gao Tong-Cun Zhang

作者单位: Key Laboratory of Industrial Microbiology, Ministry of Education College of Bioengineering, Tianjin Taishan University Taian, China School of Medicine Wuhan University of Science and Technology Wuhan, China Tianjin Key Laboratory of

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 752-755

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）