Coupled biological and photo-Fenton pretreatment system for the removal of di-(2-ethylhexyl) phthalate (DEHP) from water.
The photo-Fenton coupled with a biological system for the removal of di-(2-ethylhexyl) phthalate (DEHP) in wastewater was analyzed. The toxicity of DEHP-containing wastewater was found to be reduced after pretreatment by the photo-Fenton reaction. The effect of different factors, such as DEHP, Fe(3+) and H(2)O(2) concentrations and the reaction time, on degradation efficiency was investigated. The optimal time to stop the pretreatment process and introduce the effluent to the biological system was 60 min. The results show that effluent of DEHP-containing wastewater pretreated by the photo-Fenton method is biodegradable and that mineralization can be completed when the wastewater is subsequently treated in a biological system. The coupled Fenton and biological treatment system for the degradation of DEHP-containing wastewater can be successfully performed in a semi-continuous mode. These results indicate that the coupled photo-biological system is an effective and potential method for the treatment of DEHP-containing wastewater.
Department of Tourism, Hsing Wu College, Taipei, Taiwan 244, ROC.
Chih-Yu
CY
Chen
Pei-Ssu
PS
Wu
Ying-Chien
YC
Chung
D001673:Biodegradation, Environmental / Q000187:drug effects; D004051:Diethylhexyl Phthalate / Q000302:isolation & purification*; D006861:Hydrogen Peroxide / Q000737:chemistry* / Q000494:pharmacology; D007501:Iron / Q000737:chemistry* / Q000494:pharmacology; D007700:Kinetics; D008027:Light; D012996:Solutions; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification
C045076:Fenton's reagent; D012996:Solutions; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D004051:Diethylhexyl Phthalate; D007501:Iron