摘要
通过对比4种药剂的除氟性能,挑选出最佳除氟剂并探究了不同因素对其除氟效果的影响。结果显示:4种药剂氟化物去除效果为:ZMCF>CF-B>CF-A>PAC。最佳实验条件ZMCF除氟剂投加量为100 mg/L,PAC投加量为160 mg/L,PAM投加量为1.2 mg/L,pH为6~7,反应沉淀30 min后,出水氟化物浓度为0.52 mg/L。共存阴离子Cl-和SO_(4)_(2-)对除氟效果影响较小。现场实验结果显示,最佳实验条件下处理后出水氟化物含量为0.75~0.93 mg/L,平均值为0.83 mg/L,氟化物浓度可稳定在1.0 mg/L以下,符合煤矿矿井水排放要求。出水浊度为8.9~14.6 NTU,经后续系统过滤后进一步降低出水浊度,从而排放利用。
The removal of fluoride from mine water has always been a hot topic in water treatment research,and the search for an efficient and low-cost method has become the main driving force for the innovation of fluoride removal.By comparing the fluoride removal performance of four agents,the best fluoride remover was selected and the influence of different factors on its fluoride removal effect was investigated.The results showed that the fluoride removal effects of the four agents were ZMCF>CF-B>CF-A>PAC,and the optimal experimental conditions were 100 mg/L for ZMCF,160 mg/L for PAC,1.2 mg/L for PAM,pH 6~7,and the concentration of fluoride in the effluent water was 0.52 mg/L after the reaction and precipitation for 30min.The coexisting anions Cl-and SO_(4)_(2-)had a small effect on the fluoride removal effect.The results of the field experiment showed that the fluoride content of the treated effluent under the best experimental conditions was 0.75~0.93 mg/L,with an average value of 0.83 mg/L.The fluoride concentration could be stabilized at less than 1.0 mg/L,which was in line with the requirements for the discharge of coal mine water.The turbidity of the effluent is 8.9~14.6 NTU,and the turbidity of the effluent is further reduced after filtration by the subsequent system so as to be discharged and utilized.
作者
张伟
蔡魏魏
王志慧
王艳兵
邸卫猛
韩少科
ZHANG Wei;CAI Wei-wei;WANG Zhi-hui;WANG Yan-bing;DI Wei-meng;HAN Shao-ke(China Coal(Beijing)Environmental Protection Co.,Ltd.,Beijing 100071,China)
出处
《煤炭加工与综合利用》
CAS
2024年第3期94-99,共6页
Coal Processing & Comprehensive Utilization
关键词
矿井水
除氟剂
除氟条件
现场试验
mine water
defluorinating agent
defluoridation conditions
field test
