Current Status and Future Development Trends of Landfill Leachate Treatment Technologies

Ruqiong Qin

doi:10.6919/ICJE.202505_11(5).0011

Authors

Ruqiong Qin

DOI:

https://doi.org/10.6919/ICJE.202505_11(5).0011

Keywords:

Landfill Leachate; Treatment Technology; Transfer Station; Wet Waste Treatment Plant; Development Trend.

Abstract

With the comprehensive implementation of garbage classification policies in our country, the treatment of landfill leachate is encountering new challenges and opportunities. This paper systematically investigates the source characteristics, discharge standards, and current status of treatment technologies for landfill leachate. It also emphasizes the analysis of leachate treatment technologies under different scenarios, including incineration plants, landfill sites, wet waste treatment plants, and transfer stations. The study reveals that classified leachate exhibits high concentrations of organic matter, high salt content, and significant variations in water quality. Consequently, traditional single-stage treatment technologies struggle to meet increasingly stringent discharge standards. Through comparative analysis, a multi-stage collaborative treatment process combining "physical-chemical pretreatment + biological enhancement + advanced treatment" has demonstrated significant advantages. Notably, the application of membrane technologies such as MBR (Membrane Bioreactor) and DTRO (Disc Tube Reverse Osmosis) has effectively improved effluent quality. However, the issue of membrane fouling remains unresolved. Furthermore, the research highlights that resource utilization and low-carbon treatment are critical development directions in the future, exemplified by biogas energy recovery and nutrient extraction technologies. Finally, this paper outlines the research prospects for leachate treatment technology in terms of membrane material development and intelligent control, providing a theoretical foundation and technical reference for leachate treatment under the context of garbage classification.

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