改性钢渣处理COD模拟废水研究  

Treatment of Simulative Organic Wastewater with Modified Steel Slag

作　　者：薛芳斌[1] 宋慧平[1] 史永林[2] 高瑞[1] 程芳琴[1] 张泽鹏[1] 

机构地区：[1]山西大学资源与环境工程研究所,国家环境保护煤炭废弃物资源化高效利用重点实验室,山西太原,030006 [2]山西太钢不锈钢股份有限公司技术中心,山西太原030003

出　　处：《山西大学学报（自然科学版）》2013年第3期484-490,共7页Journal of Shanxi University(Natural Science Edition)

基　　金：国家国际科技合作项目(2011DFA90830);山西省社会发展科技攻关计划项目(20120313014-1);国家自然科学基金项目(20906053,51104097);山西省国际科技合作项目(2011081026)

摘　　要：采用正交实验法,以COD去除率为指标,设计5因素4水平正交实验;采用恒温振荡方法对表面改性钢渣做了吸附COD影响因素的研究.得出以下结论:改性钢渣吸附COD影响因素的重要性顺序为:COD初始质量浓度>溶液pH值>吸附时间>钢渣粒度>改性方法.经过改性,提高了钢渣处理COD废水的能力,其中经过十六烷基三甲基溴化铵(CTMBA)表面改性效果最佳;CTMBA表面改性钢渣对COD的吸附过程符合Langmuir方程,相关系数为0.977 9,作用机理为表面吸附,即单层吸附,理论饱和吸附量为2.566 4mg/g.Five factors with four levels orthogonal experiment was designed to research the steel slag’s removal efficiency for chemical oxygen demand（COD）.Using constant temperature oscillation method,the factors which affect the adsorption of COD by modified steel slag was also researched.The results indicated that the importance sequence of affecting factors on COD adsorbed by modified steel slag is：COD initial quality concentration＆gt;pH value＆gt;adsorption time＆gt;steel slag granularity＆gt;the modification methods.COD removal efficiency is improved by using the modified steel slag,and the CTMBA surface modification is the best modification method.In addition,research results show that the adsorption processes meet the Langmuir equation,the correlation coefficient is 0.977 9,the mechanism is monolayer adsorption and the theory quantity of adsorption is 2.566 4 mg/g.

关 键 词：钢渣 改性 COD 表面改性 LANGMUIR方程 单层吸附 

分 类 号：X705[环境科学与工程—环境工程]