Application Of Nanoparticles With Sequencing Batch Reactor For The Treatment Of Landfill Leachate

Abstract

Background: Solid waste landfill leachate is one of the most polluted types of wastewater and its treatment is considered as a great challenge. The sequencing batch reactor (SBR) is one of the best technologies used for the treatment of wastewater including leachate. Objective: A SBR model was installed (30 days working) for the treatment of raw leachate collected from Elwafa and Elamal sanitary landfill in new Cairo city, Egypt. Two treatment cycles (8 and 12 hours) were applied. A modification in the 12-h treatment cycle was carried out by increasing the aeration the settlement periods. Nanoparticles were used supplemented into the SBR model to enhance the treatment efficiency. Results: The results proved the ability of the SBR system without nanoparticles for the treatment of leachate but still leachate has high concentrations of pollutants. After the addition of nanoparticles, the treatment efficiency of SBR system increased significantly. The removal percent of all studied physicochemical parameters were higher than 99% except TP which was 96.67%. Conclusion: The treated leachate quality was comparable with the Egyptian standards for the reuse of treated leachate in restricted irrigation. The application of nanoparticles proved as a clean, environment friendly and cheap technology to improve the treatment of leachate using SBR system.