摘要
采用序批式活性污泥法 (SBR)处理实际豆制品废水 ,系统研究了温度和曝气时间对短程硝化反硝化生物脱氮工艺稳定性的影响 .结果表明 ,反应器内温度只有超过 2 8℃时 ,利用温度实现的短程硝化反硝化生物脱氮工艺才能稳定地运行 ;另外 ,首次发现过度曝气对短程硝化影响较大 ,在过度曝气条件下运行 12d ,硝化类型就由NO-2 N累积率为 96 %的短程硝化转变为NO-2 N累积率为 39 3%的全程硝化 .因此 ,为使短程硝化反硝化生物脱氮工艺稳定、持久地运行必须实现该工艺的实时控制 .
The effects of temperature and aeration time on the stability of shortcut nitrification-denitrification are studied specially in some experiments are carried on a sequencing batch reactor (SBR) fed with soybean wastewater. Results show that shortcut nitrification-denitrification achieved by controlling temperature was not stable until the temperature was more than 28℃. In addition, for the first time strong effect of excess aeration on shortcut nitrification-denitrification is observed. When the system run under excess aeration for twelve days, the type of nitrification turned from shortcut nitrification which nitrosation rate (NO- 2-N/NO- x-N) was more than 96% to complete nitrification which nitrosation rate (NO- 2-N/NO- x-N) was less than 39.3%. So, in order to make shortcut nitrification-denitrification run stably, real-time process control must be used.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2005年第1期63-67,共5页
Environmental Science
基金
国家自然科学基金重点资助项目 (5 0 13 80 10 )
黑龙江省自然科学基金资助项目 (E0 2 3 0 )
关键词
温度
过度曝气
SBR
短程硝化反硝化
实时控制
temperature
excess aeration
SBR
shortcut nitrification-denitrification
real-time control
