Author(s)

Yan Zhou

Affiliation(s)

Environmental Protection and Energy Conservation Center, Sinopec Fifth Construction Co.Ltd, Guangzhou 510145, Guangdong, China.

Corresponding Author

Yan Zhou

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.

KEYWORDS

Leachate; Heterogeneous Fenton catalysis; Solid waste landfill; Treatment process; Advanced oxidation technology

CITE THIS PAPER

Yan Zhou. Heterogeneous Fenton Catalytic Oxidation Technology for Leachate Treatment in General Solid Waste Landfills. World Journal of Engineering Research. 2025, 3(3): 35-41. DOI: https://doi.org/10.61784/wjer3037.

REFERENCES

[1] Gan Tao. Analysis of Industrial Solid Waste Disposal and Comprehensive Utilization Measures. Low Carbon World, 2025, 15: 28-30.

[2] Ma Jiamin, Ren Xueyu, Zeng Mengyuan, et al. Research Status on Characteristics and Treatment Technologies of Non-sanitary Landfills. Environmental Engineering, 2023, 1-18.

[3] Qin Jianyou, Shu Lin, Tan Qiuyan, et al. Current Status and Management Strategies for Leachate Monitoring in Municipal Solid Waste Landfills. Low Carbon World, 2025, 15: 25-27.

[4] Peng Chuanbin. Application of Landfill Leachate Treatment Technology. Energy Conservation and Environmental Protection, 2025: 64-70.

[5] Kim D J, Lee D I, Keller J. Effect of temperature and free ammonia on nitrification and nitrite accumulation in landfill leachate and analysis of its nitrifying bacterial community by FISH. Bioresource Technology, 2006, 3(97), 459–468. https://doi.org/10.1016/j. biortech.2005.03.032.

[6] Zou X, Mohammed A, Gao M, et al. Mature landfill leachate treatment using granular sludge-based reactor (GSR) via nitritation/denitritation: Process startup and optimization. Science of the Total Environment, 2022, 844, 157078. https://doi.org/10.1016/j.scitotenv.2022.157078.

[7] Mora M, Fernández M, Gómez J M, et al. Kinetic and stoichiometric characterization of anoxic sulfide oxidation by SONR mixed cultures from anoxic biotrickling filters. Applied Microbiology and Biotechnology, 2015, 99, 77–87. https://doi.org/10.1007/s00253-014-5688-5.

[8] Wang Shuangyu, Yin Zishan, Gu Shanshan, et al. Research Status of Heterogeneous Fenton Catalysts. Liaoning Chemical Industry, 2025, 54: 324-327.

[9] Zeng Xiaolan, Zhang Yuxi, Ding Wenchuan, et al. Study on Combined Process for Compliance Treatment of Mature Landfill Leachate. National Drainage Committee Annual Conference, 2015: 7.

[10] Renou S, Givaudan J G, Poulain S, et al. Landfill leachate treatment: Review and opportunity. Journal of Hazardous Materials, 2008, 150(3), 468-493.

[11] Lin S H, Chang C C. Treatment of landfill leachate by combined electro-Fenton oxidation and sequencing batch reactor method. Environmental Science, 2000, 34(17), 4243-4249.

[12] Mei Yi, Ma Lanting, Qu Chengtun. Landfill Leachate Treatment and Clean Incineration Technology. Petrochemical Industry Application, 2022, 41(12): 7-10.