USING NATURAL SOLIDS WASTE AS PERMEABLE REACTIVE BARRIERS (PRBs) FOR TREATMENT OF TURBIDITY AND COD OF MUNICIPAL ASHES-LEACHATE

Permeable Reactive Barriers (PRBs) have been successfully applied for the treatment of various pollutants. The purpose of this research is to study the efficiency of ashes-leachate treatment from the municipal solids waste landfill. The permeable reactive barriers (PRBs) constructed with mixed natural media consist of cockleshell, charcoal from peanut shells, iron powder, sand, and red clay applied. The volume of the PRBs tank used in this study was 0.7 m3 . The leachate flow rate was usually controlled at 50.0 ml/min. The results showed that permeable reactive barriers (PRBs) were effective in treating ashes-leachate from the incineration of municipal solid waste. Turbidity removal of both types of leachate more than 90.0%. COD removal was higher than 40.0 %; moreover, the pH of the leachate was not changed from the initial value, which was neutral (7.4-7.6), when the leachate flows through the PRBs. Besides, the ashes-leachate was in the basic range of 9.4-10.3.