摘要
随着水环境质量的恶化,高能低耗的污水深度处理技术成为当前研究热点,尤其是对于低C/N比的城市生活污水脱氮技术的研究。试验以城市生活污水的二级出水为研究对象,采用ANAMMOX下向流生物滤池,当二级出水NH3-N=15-35mg/L,CODCr=25-45mg/L,TOC=9-12mg/L,水温=25-28℃时,ANAMMOX下向流生物滤池脱氨率达80%-100%,不仅适用于处理高氨废水,也可用于城市生活污水深度处理中。试验发现pH可以用来指示ANAMMOX反应的进行,同时也可以用来指示ANAMMOX反应进程的快慢。试验中还发现,厌氧氨氧化反应速率与NO2--N含量有关,原水中NO2--N含量的增多有利于ANAMMOX工艺处理效果。
Along with the water environmental degradation, the study of advanced wastewater treatment processes with high-efficient and low-cost, especially for treatment of municipal wastewater with low C/N ratio becomes very concerned. Anaerobic ammonium oxidation (ANAMMOX) process with downward flow bio-membrane filter was studied for nitrogen removal of secondary municipal wastewater effluent. In case when the NH3-N, CODCr TOC and temperature of secondary effluent were 15-35 mg/L, 25-45 mg/L, 9-12 mg/L and 25-28 degree Centigrade respectively, ammonia removal ratio ranged from 80%-100% has been obtained. It suggested that ANAMMOX not only suit for treating ammonia-rich wastewater, but also for advanced treatment of municipal wastewater. It was observed that pH might be an indicator of the course and speed of ANAMMOX reaction. Besides, it was also observed that the reaction rate of ANAMMOX was related to the concentration of NO2- - N, and the high concentration of NO2- - N was in favor of ANAMMOX reaction.
出处
《给水排水》
CSCD
北大核心
2005年第6期12-17,共6页
Water & Wastewater Engineering
基金
国家高技术研究发展计划(863)项目(2003AA601010)。
