摘要
研究了改性钢渣吸附柱进水速率、进水浓度、高径比及分级级数等因素对锌离子动态吸附效果的影响。研究表明:随着进水流速和进水浓度的增加,吸附柱的穿透时间和耗竭时间减少;随着分级级数和吸附柱高径比增加,吸附柱穿透时间和耗竭时间增加。利用BDST模型和Thomas模型对改性钢渣吸附锌离子的动态过程进行模拟,发现BDST模型能够很好地预测吸附柱的穿透时间和耗竭时间,而Thomas模型则可以用来描述改性钢渣吸附锌离子的动态吸附特征,进行动态吸附量预测。
The factors of influent rate,influent concentration,height-diameter ratio and hierarchical level of the modified steel slag adsorption column on the dynamic adsorption effect of zinc ions were studied.The results showed that the penetration time and depletion time of the adsorption column decreased with the increased of influent flow rate and influent concentration.And the penetration time and depletion time of the adsorption column increased with the increase of the hierarchical level and height-diameter ratio.The BDST model and Thomas model were used to simulate the dynamic process of adsorption of zinc ions by modified steel slag.It was found that the BDST model could well predict the penetration time and depletion time of the adsorption column,while Thomas model could be used to describe the dynamic adsorption characteristics of zinc ions adsorbed by modified steel slag and predict the dynamic adsorption amount.
作者
曾文超
安立超
龚习炜
张志刚
ZENG Wenchao;AN Lichao;GONG Xiwei;ZHANG Zhigang(Nanjing Environment Group Co.Ltd.,Nanjing Jiangsu 210000;School of Environmental and Biological Engineering,Nanjing University of Science&Technology,Nanjing Jiangsu 210000;Jiangsu CTIEC Environmental Protection Research Institute Co.Ltd.,Yancheng Jiangsu 224051)
出处
《环境卫生工程》
2021年第4期99-103,共5页
Environmental Sanitation Engineering
基金
江苏省科技支撑计划项目(BE201385)。
