Heterogeneous Fenton Catalytic Oxidation Technology for Leachate Treatment in General Solid Waste Landfills
Year: 2025
Type: article
Abstract: To address the challenges posed by the complex water quality, high pollutant concentration, and susceptibility to environmental influences in general solid waste landfill leachate, this study developed a combined treatment process based on heterogeneous Fenton catalytic oxidation. Taking a landfill leachate treatment project as an example, the process route "Denitrification Pretreatment - Heterogeneous Fenton Catalysis - Post-treatment System" was employed. Through the synergistic action of units including mechanical bar screening, coagulation sedimentation, air stripping deammonification, activated carbon adsorption, heterogeneous Fenton oxidation, A/O biological treatment, and advanced filtration/disinfection, efficient pollutant removal was achieved. Practical engineering application demonstrated stable system operation. The effluent quality met the discharge standards specified in Table 2 of the "Standard for Pollution Control on Municipal Solid Waste Landfill" (GB16889-2024), with removal rates for COD, BOD?, ammonia nitrogen, total nitrogen, and suspended solids reaching 98%, 98.8%, 99.3%, 99.04%, and 98.6% respectively. The TOC degradation rate exceeded 60%. This process offers both environmental and economic benefits, providing a replicable engineering model for the harmless treatment of landfill leachate.
DOI: 10.61784/wjer3037
Author: Yan Zhou
Institution: Sinopec (China)
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4412516577