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《Journal of Jinan University(Natural Science & Medicine Edition)》 2009-01
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Resources recovery treatment of coal gasification waste water containing phenols by complex extraction method

WANG Xin-le1,LI Ming-yu1,SONG Lin1,FANG Jian-de2(1.Department of Environmental Engineering,Jinan University,Guangzhou 510632,China;2.South China Institute of Environmental Sciences,MEP,Guangzhou 510630,China)  
Complex extractive treatment of coal gasification wastewater containing phenols was studied using tributyl phosphate as the extraction agents and kerosene as the thinner,The technique of Stripping extraction of phenols from loaded organic phase by the solution of sodium hydroxide was also studied.The effect of initial pH and volume proportion of TBP on the extraction ratio of phenol and the remlval ratio of CODCr were investigated.In addition,the reusing of organic phase was discussed in the process of extraction and stripping of phenol.The experimental results indicated that the First-level extraction ratio of phenol and the remlval ratio of CODCr were over 90% and 80% respectively,and the Second-level extraction ratio of phenol and the Total elimination rate of phenol were about 40% and over 95%.when the initial pH of wastewater were from 3 to 6.Stripping ratio was over 80% when the concention of sodium hydroxide was 4%~10%.The results also showed that the organic phase of TBP-kerosene oil can be reused many times.
【Fund】: 广东省科技计划项目(2002C31622)
【CateGory Index】: X703
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