摘要
利用粉煤灰作为主要原料，制备生物滤池陶粒滤料。将该滤料作为生物反应器的生物膜载体，处理城市生活污水。反应器运行期间，COD、氨氮的平均去除率为85．47％、66．95％。在停留时间1．25h、气水比4．0的条件下，COD去除率最高，为95．02％；停留时间1．5h，气水比2．0，废水pH值在8—9，氨氮的去除率均为最高，为79．02％。反冲洗12h后，COD和氨氮的去除率恢复正常。
Coal ash was used as the main material to produce the ceramsite filter medium of biological aerated filter. It was used as bio-film carrier of biological reactor to treat municipal domestic sewage. During the reactor operation, the average removal rate of COD and nitride ammonium were 85.31% and 66.95% respectively. At a HRT of 1.25h and an air/ water ratio of 4. O, the removal rate of COD was the highest, reaching 95.02% ; and at a HRT of 1.5h, an air/water ratio of 2.0 and a pH of 8 -9, the removal rate of nitride ammonium was the highest, reaching 79.02%. After 12 h backwashing, the removal rates of both COD and nitride ammonium returned to normal.
出处
《金属矿山》
CAS
北大核心
2008年第11期114-117,共4页
Metal Mine
关键词
粉煤灰
滤料
生物反应器
COD
氨氮
Coal-ash, Filter medium, Biological reactor, COD , Nitride ammonium
