화학공학소재연구정보센터
Chemical Engineering Journal, Vol.117, No.2, 179-185, 2006
Solvent extraction process development and on-site trial-plant for phenol removal from industrial coal-gasification wastewater
A phenol removal process was developed for the coal-gasification wastewater. Based on extraction principles and experimental results, an extracting solvent was selected in consideration of phenol removal, solvent recovery and COD removal for the coal-gasification wastewater. The extraction process conditions were studied, and a flowsheet for phenol removal was proposed. An on-site trial-plant of 2 t/h wastewater was set up for testing and industrial verification. The results of the on-site trials showed that more than 93% of the phenols and 80% of COD in the wastewater were removed. The operating cost of the proposed process was approximately balanced by the economic return of the recovered phenols. (c) 2005 Elsevier B.V. All rights reserved.