摘要
采用新型蜂窝陶瓷载体气升式内循环反应器（IAL-CHS）对受污染的城市地表水进行生物修复，该反应器能快速有效地修复受污染水体。考查了氨氮的变化历程、HRT与氨氮去除率间的关系，确定了最佳HRT为20min。在HRT为20min、接触反应时间仅为14min条件下，该反应器对氨氮、TP、COD、TOC、浊度、UV254的去除率分别为86．7％～96．2％、4．5％～34．4％、15．5％～63．6％、5．8％～38．1％、9．4％～88．3％、3．8％～48．5％。
A lab scale internal airlift loop with immobilized cells on ceramic honeycomb support （IAL-CHS） reactor was constructed for treatment of polluted river samples. After the 20 days of start-up to develop the biofilm on the support, the reactor accomplished stable, fast and effective bioremediation （〉86% NH4^＋-N removal）. Data are presented to show the transformations of ammonia to nitrite and nitrate and the effect of hydraulic resident time （HRT） on NH4^＋-N removal rate. Operating under a HRT of 20 min （14 min of contact with immobilized bacteria）, the removal rates of NH4^＋-N, TP, COD, TOC, turbidity and UV254 were 86.7%-96.2%, 4.5%-34.4%, 15.5%- 63.6%, 5.8%-38.1%, 9.4%-88.3%, and 3.8%-48.5%, respectively.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2008年第8期65-68,共4页
Environmental Pollution & Control
关键词
地表水
生物修复
蜂窝陶瓷
生物膜
surface water
bioremediation
honeycomb ceramic
biofilm
