摘要
实验采用短程硝化工艺处理高氨氮废水,并用PCR-DGGE分析了系统中的微生物区系。结果表明,进水氨氮浓度在50～400mg/L之间梯度增加时,出水氨氮浓度在10mg/L以下;随着氨氮浓度的增加,亚硝态氮积累率逐渐升高,当氨氮浓度达到300mg/L时,积累率达到90%左右。DGGE分析结果表明,随着运行时间的延长,微生物区系多样性减少;氨氮负荷为50mg/L与400mg/L相比,相似性为0.24。
Shortcut nitrification was used to treat high ammonia nitrogen wastewater, with analysis of microbial communities by PCR-DGGE. Results showed that the system could endure the impact of influent ammonia nitrogen concentration from 50-400mg/L, the effluent ammonia nitrogen concentration was below 10mg/L. Along with the increase of influent ammonia nitrogen concentration, accumulation ratio of NO2-N increased, when the concentration was up to 300mg/L, the accumulation ratio was nearly 90%.DGGE result showed that diversity of microbial community decreased evidently as the time went on. When influent ammonia nitrogen concentration was 50mg/L and 400mg/L, the comparability of microbial community was only 0.24.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2009年第7期94-97,共4页
Environmental Science & Technology
基金
河南省杰出青年自然科学基金(0512001500)
关键词
高氨氮废水
短程硝化
变性梯度凝胶电泳
微生物区系
high ammonia nitrogen wastewater
shortcut nitrification
denaturing gradient gel electrophoresis
microbial community
