摘要
以某实际合成氨化工厂废水为研究对象,进行高氨氮化工废水缺氧/好氧(A/O)工艺高效短程生物脱氮中试研究.试验结果表明:A/O系统经过90 d的运行,实现了稳定的短程硝化,并获得了稳定的有机物和氮去除.亚硝态氮积累率维持在80%以上,COD、NH4+-N和TN的去除率分别达到了95%、99%和80%.此外,机理分析表明,A/O中试系统获得稳定短程硝化的主要因素为较低ρ(DO)、较高ρ(FA)及适宜HRT三者的协同调控.
A pilot-scale study on shortcut biological nitrogen removal from synthetic ammonia industrial wastewater was researched in an aerobic-anoxic system. The industrial wastewater contained a high NH4 ＋-N concentration with 80 - 110 mg/L. Experimental results showed that a stable short-cut nitrification and denitrification was achived after a period of 90 d operation. The accumulation nitrite was keeping above 80%. The removal efficiencies of COD, NH4＋-N and TN was 95% , 99% and 80% , respectively. In addition, the mechanism analysis showed that the main reason for getting the stable short- cut nitrification and denitrification in the pilot system was attributed to the collaboration of low dissolved oxygen （DO）, high free ammonia （FA） and appropriate hydraulic retention time （HRT）.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2012年第9期1436-1440,共5页
Journal of Beijing University of Technology
基金
国家重大水专项资助项目(2009ZX07210-002)
关键词
合成氨工业
A/O工艺
短程硝化反硝化
游离氨
synthetic ammonia industria
A/O process
short-cut nitrification and denitrification
free ammonia
