摘要
采用主要由厌氧-好氧-缺氧构成的短程脱氮工艺,进行了常温条件下处理生活污水的实验.分析了DO、游离氨（FA）等因素对亚硝酸盐积累的影响.结果表明,DO是影响短程硝化的主要因素,控制好氧1区的DO在1.5~2.5mg/L、好氧2区的DO在0.5-1.0mg/L,可以实现稳定的亚硝酸盐的积累,氨氮去除率达到90%.对氨氧化菌（AOB）进行T-RFLP群落分析表明,该工艺运行中的AOB优势菌种为Nitrosomonas oligotropha culster.
A process consisting of anaerobic-aerobic-anoxic units was proposed to achieve shortcut nitrification removal with domestic wastewater at normal temperature. Effect of DO and FA on nitrite accumulation was investigated. DO was the main factor in partial nitrification. The steady nitrite accumulation was obtained when the DO was controlled at 1.5-2.5mg/L in the first aerobic compartment and 0.5-1.0mg/L in the second aerobic compartment, while the ammonia removal efficiency was above 90% in this system. The analysis of microbial community of ammonium-oxidizing biomass using T-RFLP method showed that the preponderant microbe in this partial nitrification was Nitrosomonas oligotropha cluster.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2009年第5期486-492,共7页
China Environmental Science
基金
“十一五”国家科技支撑计划(2006BAC19B)
关键词
短程硝化反硝化
氨氧化菌
亚硝化率
积累
shortcut nitrification-denitrification
ammonium-oxidizing bacteria
nitrosation rate
accumulation
