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金毯山总第 405期
March 2010 METAL MINE 2010年第 3期
改性膨润土处理含油废水的试验研究
管俊芳叶瀚胡雪峰曹明礼杨文
(武汉理工大学)
摘要以 3种改性后的鄂州膨润土为吸附剂,通过固液接触时间、吸附剂用量、溶液初始浓度、乳化剂含量
等因素,系统研究了改性膨润土对废水中油的吸附效果,并通过红外光谱分析了吸附剂的变化特征。结果表明,
1831一膨润土的吸附效果最好,其吸附最佳工艺是吸附时间 h,投加量 1 g/L,溶液浓度 3 50mg/L,乳化剂用量
mL/L,油去除率可达 95%以上。
关键词改性膨润土含油废水吸附
Study on Disposal ofOily-containing Wastewater by Modified Bentonite
Guan Junfang Ye Han Hu Xuefeng Cao Mingli Yang Wen
(Wuhan University ofTechnology) ofTechnology) (WuhanUniversity
Abstract Adsorption ofoily—containingwastewater was studied by using modified Ca—bentonite ofthe Erzhou three
productsas adsorptionof factors were studied,such ascontacttheliquid-solid time、thedosage sor— of
bent、initialconcentration solution、emulsificationof machine content and SO adosorbentof were analyzed by
infrared theadsorptionthat result theof1831一bentonite one,andthebest is ad— of thebestcraft
sorption is that thesorptionthat time ofis 1 h,thedosage 3 g/L,theof solution concentration50of mg/L,thedetergent valume ml/
L,andclearance its more is rate than95% .
Keywords Modified bentonite,Oily—containingwastewater,Absorption
膨润土具有良好的吸附作用、较大的比表面积容量 %,吸蓝量 g/g,阳离子交换容量
和离子交换容量,在污水处理中得到了广泛的研(CEC),湿态抗压强度 ,热湿
究口4。。但天然膨润土中表面硅氧结构具有极强的拉强度 kPa。
亲水性,以及层间可交换阳离子的