Purification of oily wastewater in thermal power plant by coal fly ash

被引：0
|
作者：
刘仁龙 [1 ,2 ]
陈维 [1 ]
刘清才 [3 ]
机构：
[1] College of Chemistry and Chemical Engineering,Chongqing University
[2] School of Power Engineering,Chongqing University
[3] College of Materials Science and Engineering,Chongqing
来源：
JournalofCentralSouthUniversityofTechnology | 2009年 / 16(S1)卷 / S1期
关键词：
D O I：
暂无
中图分类号：
X703 [废水的处理与利用];
学科分类号：
摘要：
The removal of oil from oily wastewater in thermal power plant by coal fly ash(CFA) was investigated. It contained about 2.5 g/L of mineral oil,which had to be treated efficiently before it was discharged. The experiments were carried out as a function of different initial concentrations of oil,mass dosage,contact time and pH value to obtain the optimum conditions for the removal of oil from oily wastewater. The experimental results show that CFA presents the most suitable conditions for the removal of oil from waste-water at a dosage of CFA 2.5 g/L,15 min of contact time and a pH value of 4.8. The adsorption process is performed with almost 96% of oil removal from wastewater. The kinetic data meet the second-order kinetic model. The Langmuir and Freundlich adsorption models were applied to describing the experimental isotherms and isotherm constants. The equilibrium data fit very well with the Freundlich model.
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页码：333 / 337
页数：5
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