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常温低氨氮污水生物滤池CANON工艺的实现
引用本文:王俊安,李冬,张杰,李占,陶晓晓.常温低氨氮污水生物滤池CANON工艺的实现[J].化工学报,2010,61(6):1528-1533.
作者姓名:王俊安  李冬  张杰  李占  陶晓晓
作者单位:北京工业大学水质科学与水环境恢复工程北京市重点实验室
基金项目:国家自然科学基金,北京市自然科学基金,国家水体污染控制与治理科技重大专项课题 
摘    要:基于厌氧氨氧化反应的生物自养脱氮是目前污水处理中最为经济的脱氮途径。采用装有火山岩活性生物陶粒滤料的反应器,在常温(8~25℃)条件下对低NH4+-N(60~90mg.L-1)城市污水进行试验研究,通过改变曝气等运行工况,经过硝化自然挂膜、优选亚硝酸细菌和培养厌氧氨氧化菌3个阶段之后,实现了生物滤池同步亚硝化/厌氧氨氧化生物自养脱氮。结果表明,DO控制可作为反应器启动的主要控制因子,通过在生物滤池上方水柱中进行曝气和处理水携氧内循环联合的方式,可以实现对生物膜系统内DO浓度的良好控制。运行过程中可以通过pH值的变化来对反应周期进行判断,pH值的第二个突跃点是系统反应周期结束的标志。

关 键 词:部分亚硝化  厌氧氨氧化  生物脱氮  生物滤池  CANON工艺  
收稿时间:2009-12-3
修稿时间:2010-2-3  

Realization of CANON process in biofilter for wastewater with low ammonia and room temperature
WANG Junan,LI Dong,ZHANG Jie,LI Zhan,TAO Xiaoxiao.Realization of CANON process in biofilter for wastewater with low ammonia and room temperature[J].Journal of Chemical Industry and Engineering(China),2010,61(6):1528-1533.
Authors:WANG Junan  LI Dong  ZHANG Jie  LI Zhan  TAO Xiaoxiao
Abstract:Biological autotrophic denitrification based on anaerobic ammonium oxidation(ANAMMOX)has been considered as the most economical way in biological sewage treatment processes for nitrogen removal presently.Using bio-ceramic filter with volcanic activity,urban sewage pilot study was carried out at room temperature (8—25℃) under the condition of low NH+4-N (60—90 mg·L-1),by changing the operating conditions such as aeration etc.After three stages—nitrification hanging film,preferred nitrite bacteria and culturing anaerobic ammonia-oxidizing bacteria,CANON(completely autotrophic ammonium removal over nitrite)process is realized in biofilter.The results show that DO control can be the main factor for controlling reactor startup.Through combined treatment of aeration at the top of water column in biofilter and internal recycling of treated water with oxygen,the control of DO concentration in the biofilm system is easily achieved.Furthermore,the reaction cycle can be judged from the change of pH value in the run process and its second-jump is a signal of end of reaction period.
Keywords:partial-nitrosification  ANAMMOX  biological nitrogen removal  biofilter  CANON process
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