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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:日本熊本大学
学位:博士
所在单位:环境学院
学科:环境工程. 环境科学
办公地点:环境学院(西部校区)
联系方式:qiaosen@dlut.edu.cn
电子邮箱:qiaosen@dlut.edu.cn
Partial nitritation treatment of underground brine waste with high ammonium and salt content
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论文类型:期刊论文
发表时间:2009-10-01
发表刊物:JOURNAL OF BIOSCIENCE AND BIOENGINEERING
收录刊物:SCIE、EI、Scopus
卷号:108
期号:4
页面范围:330-335
ISSN号:1389-1723
关键字:Anammox; Free ammonia; Nitrogen removal; Partial nitritation; Salinity
摘要:Underground brine waste containing high concentrations of ammonium and with a salinity of 3% is usually generated during the production of methane gas and iodine in the gas field of Chiba Prefecture, Japan. In this study, one swim-bed reactor, packed with a novel acrylic fiber biomass carrier (Biofringe), was applied to the partial nitritation treatment of this kind of underground brine waste. A stable nitrite production rate of 1.6 kg NO(2-)Nm(-3) d(-1) was obtained under a nitrogen loading rate of 3.0 kg-N m(-3) d(-1), at a pH of 7.5 and a temperature of 25 degrees C. Nitrate production was negligible and the effluent NO(2)-N/NO(x)-N ratio was above 98% due to the successful inhibition of nitrite-oxidizing bacterial activity. Free ammonia was considered to be the main factor for inhibiting the activity of nitrite-oxidizing bacteria. A microbial community shift was demonstrated by 16S rRNA analysis, and it was shown that the ammonium-oxidizing bacteria became the predominant species after successful nitrite accumulation was observed. (C) 2009, The Society for Biotechnology, Japan. All rights reserved.