Electrochemical treatment of solid waste Leachate using combined electrocoagulation and electrochemical oxidation treatment

Wang, Nan

doi:10.20964/2022.08.44

Cited by 2 publications

(1 citation statement)

References 53 publications

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“…In contrast to stabilized LL, young LL processes extremely high concentrations of all chemical parameters, with the exception of pH, as seen in Tables 3 and 4. The range of COD concentration is from 10,193 mg/L [95] to 68,250 mg/L [93] for young LL and 1150 [111] to 4505 [107] for stabilized LL samples. The biodegradability (BOD 5 /COD ratio) of young LL varied from 0.0845 [95] to 0.582 [56].…”

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confidence: 99%

An Extensive Analysis of Combined Processes for Landfill Leachate Treatment

Jamrah,

AL-Zghoul,

Al-Qodah

2024

Water

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Sanitary landfilling is the predominant process for solid urban waste disposal, but it generates leachate that poses environmental, economic, and social concerns. Landfill leachate (LL) contains complex and refractory pollutants and toxic compounds that can vary depending on landfill maturity, age, and biochemical reactions, making its treatment challenging. Due to its unique characteristics and occurrence in remote locations, LL requires separate treatment from wastewater. Various conventional treatment processes involving biological, chemical, and physical processes have been used for LL treatment, but a single treatment process is insufficient to meet environmental standards. This review demonstrates that combined treatment processes are more effective and efficient for LL treatment compared to single processes. Among the various combinations, chemical–chemical and chemical–biological treatments are the most commonly used. Specifically, the integration of Fenton with adsorption and a membrane bioreactor (MBR) with nanofiltration (NF) processes shows promising results. The combined processes of MBR with NF, Fenton with adsorption, and PF with biological treatment show maximum removal efficiencies for COD, reaching 99 ± 1%, 99%, 98%, and 97%, respectively. Additionally, the combined Fenton with adsorption process and EC with SPF process enhance biodegradability as indicated by increased BOD5/COD ratios, from 0.084 to 0.82 and 0.35 to 0.75, respectively. The findings emphasize the importance of developing and implementing enhanced combined treatment processes for LL, with the aim of achieving efficient and comprehensive pollutant mineralization. Such processes have the potential to address the environmental concerns associated with LL and contribute to sustainable waste management practices.

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