CAJ | 학술논문

采用碱性及吸附性强的环境矿物材料膨润土、钢渣及其混合物对含Cu2+酸性矿山废水进行对比处理试验研究，结果表明：膨润土、钢渣混合后比单一膨润土和单一钢渣的处理效果更好，膨润土、钢渣混合后可发生吸附-聚沉协同作用，更有利于Cu2+的去除。对于pH值为3.5~4， Cu2+质量浓度为50 mg/L的含Cu2+酸性矿山废水，当膨润土、钢渣质量混合比分别为5∶5和8∶2时，在投加量为2 g/L时，去除效果较好。吸附反应120 min时，可使废水pH值分别达到8.67和7.21，Cu2+去除率分别为95.80%和93.94%；膨润土、钢渣复合吸附剂对铜离子的吸附过程符合伪二级动力学方程，相关系数均可达到0.998以上，其吸附过程以化学吸附为主，并伴有液膜扩散及颗粒内扩散。膨润土、钢渣混合材料可作为处理含Cu2+酸性矿山废水的优良吸附材料，5∶5膨润土-钢渣复合吸附材料效果更好。
채용감성급흡부성강적배경광물재료팽윤토、강사급기혼합물대함Cu2+산성광산폐수진행대비처리시험연구，결과표명：팽윤토、강사혼합후비단일팽윤토화단일강사적처리효과경호，팽윤토、강사혼합후가발생흡부-취침협동작용，경유리우Cu2+적거제。대우pH치위3.5~4， Cu2+질량농도위50 mg/L적함Cu2+산성광산폐수，당팽윤토、강사질량혼합비분별위5∶5화8∶2시，재투가량위2 g/L시，거제효과교호。흡부반응120 min시，가사폐수pH치분별체도8.67화7.21，Cu2+거제솔분별위95.80%화93.94%；팽윤토、강사복합흡부제대동리자적흡부과정부합위이급동역학방정，상관계수균가체도0.998이상，기흡부과정이화학흡부위주，병반유액막확산급과립내확산。팽윤토、강사혼합재료가작위처리함Cu2+산성광산폐수적우량흡부재료，5∶5팽윤토-강사복합흡부재료효과경호。
Basic and high adsorbability materials such as bentonite, steel slag and the mixture of two materials are prepared to treat acid mine drainage containing Cu2+. The results showed that the mixture of two materials had a better effect than the single bentonite and the single steel slag. When the two absorbent materials were mixed to treat acid mine drainage containing Cu2+, the mixture could treat Cu2+ better with the adsorption-coagulation synergy. Under treatment conditions of the mixing ratios of bentonite, steel slag were 5∶5 and 8∶2, mixture usage of 2 g/L, initial pH value 3.5~4, the removal efifciency of Cu2+ was excellent at 50 mg/L initial concentration.when adsorption reacts 120 min, the wastewater pH value were 8.67 and 7.21, respectively; the removal rates of Cu2+ were 95.80% and 93.94%, respectively. The coefifcient of determination (R2>0.998) agreed well with pseudo second-order kinetics. The main adsorption process is chemical adsorption. Liquid iflm diffusion and intra-particle diffusion are secondary. The mixture of bentonite and steel slag as a excellent absorbent material can treat acid mine drainage containing Cu2+, especially the material mixing ratio of 5∶5.