吸附法去除火电厂冲灰水氟离子的研究

Study on Removing Fluoride Ion in Ash Sluicing Water of Thermal Power Plant by Adsoption Process

以活性氧化铝和活性碳作吸附剂,在室温28℃下采用吸附法对冲灰水中氟离子的去除效果进行了实验研究,探讨了吸附剂用量、pH和吸附时间对吸附效果的影响。实验结果表明,选用活性氧化铝作吸附剂时,当用量为12.5 g/L,pH为7,吸附时间为6 h时,除氟效率最好,达到86%;选用活性炭作吸附剂时,当用量为17.5 g/L,pH为5,吸附时间为7 h,除氟效率最好,达到92%。

Chose activated aluminium oxide and activated carbon as adsorbent,the fluoride ion in ash sluicing water had been removed by adsoption process,and its removal efficiency have been studied.The experimental results showed that the removal efficiency of fluoride ion could reach to 86% and 92% under the following conditions： the dosage of activated aluminium oxide was 12.5 g/L,pH was 7,and adsoption time 6 h;the dosage of activated carbon was 17.5 g/L,pH was 5,and adsoption time 7 h.