新疆中低品位膨润土在炼油碱渣废液处理中的应用

以新疆中低品位膨润土为原料,制备出具有良好吸附能力的膨润土环境修复材料,同时研究了其作吸附剂对于炼油碱渣中挥发酚及硫离子的吸附效果及影响因素。结果表明,在吸附剂量为40g/L、振荡时间为15m in、吸附pH值为8的条件下,其对挥发酚的去除率最高可达94%。25℃常温下,膨润土环境修复材料吸附炼油碱渣废液中挥发酚的等温吸附模型满足Freund lich方程,回归方程为:Q=0.204Ce0.485。当吸附剂量为60g/L、振荡时间为30m in、pH=8时,其对炼油碱渣废液中硫离子的去除率可达53.8%。

Application of Xinjiang Low-to-Moderate-Grade Bentonite in Treatment of Alkali Dregs Waste Water from Oil Refining

The environmental rehabilitation material with good adsorption capacity was prepared by use of Xinjiang Xiazijie′s low-to-moderate-grade bentonite as a raw material.The adsorption effect of the material prepared for volatile phenol and S~(2-) and its influencing factors were researched in more detail.The optimum adsorption parameters were as follows:the adsorbent dosage 40g/L,surging time 15min,pH=8.Under these conditions,the top removal rate of volatile phenol is above 94%.At 25℃,the adsorption isotherm of the environmental rehabilitation material for volatile phenol and S~(2-) in oil refining alkali dregs waste water is in line with Freundlish equation,its regression equation is Q=0.204Ce~(0.485).Under the conditions of the adsorbent dosage is 60g/L,surging time is 30min,pH=8,the top removal rate of S~(2-) in oil refining alkali dregs waste water is 53.8%.