Fenton treatment efficacy for the purification of different kinds of wastewater

摘要

The Fenton chemistry comprises both the classical Fenton reagent and its modification, so-callednFenton-like techniques, which have received great attention as a promising technology fornwastewater treatment. In the present study real wastewater from different sources (leachatenfrom oil shale semicoke landfill, pharmaceutical effluents from medical ointment production,nmunicipal landfill leachate and wastewater originated from food-processing) were treated bynmeans of Fenton/Fenton-like systems. The effectiveness of wastewater treatment was assessednby COD removal. Additionally, biodegradability improvement (BOD7/COD) and acute toxicitynreduction of investigated wastewater samples were observed. The application of the Fentonnchemistry to wastewater samples with different origin resulted generally in 70% or highernCOD removal. Thus, the Fenton could be effectively applied both as a single treatment methodnand pre-treatment step to improve subsequent biodegradability of wastewater effluents.