摘要
通过小试研究了曝气生物滤池实现短程硝化反硝化的效能和机理。试验结果表明,曝气生物滤池在滤速为1～2m/h、气水比为3∶1、水温为21～26.5℃、进水COD负荷为1.18～5.57kg/(m3·d)、NH3-N负荷为0.26～0.62kg/(m3·d)、TN负荷为0.28～0.63kg/(m3·d)的条件下可以取得良好的去除有机物和脱氮效果。试验中还发现,反应器中出现了明显的NO-2积累现象,并表现出显著的短程硝化反硝化特征,进行机理分析后认为曝气生物滤池的结构特征和运行方式是其能够进行短程硝化反硝化的主要原因。
Study was made on the efficiency and mechanism of shortcut nitrification-denitrification in aerated biofilter.The test result showed that good effect of organic and nitrogen removal can be achieved at filtration rate of 1～2 m/h,air/water ratio of 3∶1,water temperature of 21～26.5 ℃,influent COD loading of 1.18～5.57 kg/(m3·d),NH3-N loading of 0.26～0.62 kg/(m3·d),TN loading of 0.28～0.63 kg/(m3·d).Furthermore,the obvious NO-2 accumulation and shortcut nitrification-denitrification were found in the biofilter.After analysis of mechanism,it was believed that the structural feature and operational mode were the principal causes for the shortcut nitrification-denitrification occurring in the biofilter.
出处
《中国给水排水》
CAS
CSCD
北大核心
2002年第11期1-4,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(59825106)
关键词
曝气生物滤池
NO^-2积累
短程硝化反硝化
aerated biofilter
NO-2 accumulation
shortcut nitrification-denitrification
