摘要
研究了生物过滤法处理含氨废气的技术 .实验中考察了气体的停留时间、进气方式、进气中氨浓度等因素对氨去除率的影响 .当进气中氨的浓度分别为 1 5 2、75 9和 1 52 0mg(NH3) /m3时 ,生物过滤反应器对氨的去除率均在 95%以上 ,反应器对氨的脱除速率分别为 0 0 2 0、0 0 78和 0 1 56g/(kg·d) .实验结果表明逆流进气是较佳的进气方式 ,反应器的适宜停留时间是 32s.处理后的气体中氨的浓度可以达到国家一级排放标准 .对填料中各形态氮浓度的分析证明氨在反应器中的转化以硝化反应为主 .
Biofiltration technique for disposing ammonia\|contaminated gas streams was investigated.The effects of retention time,gas introducing ways and initial concentration of ammonia on the ammonia removal efficiency were studied.The ammonia removal efficiency was higher than 95% when the inlet ammonia concentration was 15 2,75 9 or 152 0?mg(NH\-3)/m\+3,and the ammonia elimination rate was 0 020,0 078 or 0 156 g/(kg·d).The experimental results indicated that the optimum gas introducing way is counter flow and the preferable retention time was 32?s.It is found that ammonia is nitrified to nitrate in the reactor.
出处
《环境科学学报》
CAS
CSCD
北大核心
2000年第5期518-522,共5页
Acta Scientiae Circumstantiae
基金
辽宁省科学技术基金! (项目编号 :991 0 60 0 2 0 2 )
大连市科委重点项目基金
韩国LG集团资助项目
