摘要
活性氧化铝作为常用的除氟吸附剂,有专一的除氟性。选用粒径为2~4mm的活性氧化铝,通过静态吸附试验和动态连续流滤柱试验,探究了其吸附除氟性能的影响因素。结果表明:活性氧化铝除氟最佳pH值为5,吸附平衡时间为5h,SO_4^(2-)对活性氧化铝的静态吸附影响较大;增大滤速或降低滤料填充高度会使除氟效率降低,超标时间和滤柱穿透时间缩短。
The activated aluminum oxide is commonly used as fluoride adsorbent with its specific fluoride removal capacity. The activated aluminum oxide with particle size of 2 -4 mm was selected to investigate the influencing factors on the adsorption of fluoride. The results showed that the optimal pH was 5, the adsorption equilibrium time was 5h, and the sulfate ion had a great influence on fluoride removal. Increasing filtration rate or decreasing medium packing height could lead to lower removal efficiency, shorten effective running time and penetrating time.
出处
《供水技术》
2018年第1期21-23,27,共4页
Water Technology
关键词
吸附除氟
活性氧化铝
影响因素
adsorption of fluoride
activated alumina
factors
