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Updated: Jul 28, 2026
15:19
Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Performance evaluation of leachate treatment system using innovative sulfur circulation method.
1Water Resources and Environmental Research Division, Institute of Construction Technology, 2311 Daehwa-dong, Ilsan-gu, Koyang, Kyonggi-do, 411-712, Korea.
Environmental Technology
|December 13, 2003
Summary
This study introduces an innovative landfill stabilization method using sequential leachate treatment. The process effectively decomposes organic matter and achieves high denitrification rates, making landfill stabilization efficient and economical.
Area of Science:
- Environmental Engineering
- Microbial Ecology
- Waste Management
Background:
- Landfills require effective stabilization methods to manage recalcitrant organic matter and harmful emissions.
- Current methods may not fully address the complex microbial processes involved in landfill decomposition.
- Innovative approaches are needed to enhance early landfill stabilization and resource recovery.
Purpose of the Study:
- To evaluate an innovative pilot-scale method for early landfill stabilization.
- To investigate the decomposition of recalcitrant organic matter using sulfate reduction.
- To assess the efficiency of simultaneous denitrification and sulfide oxidation within a recirculating leachate system.
Main Methods:
- Sequential leachate collection, nitrification via aeration, sulfate addition, and leachate recirculation.
- Utilizing sulfate-reducing bacteria for organic matter decomposition and sulfur-oxidizing bacteria for denitrification.
- Aeration of discharged leachate to facilitate nitrification and sulfide oxidation.
Main Results:
- Sulfate-reducing bacteria decomposed recalcitrant organic matter using sulfate as an electron acceptor.
- Symbiotic microbial activity led to simultaneous denitrification and sulfide oxidation.
- Achieved a denitrification efficiency of approximately 92.3% with significant nitrate-nitrogen increase.
- Demonstrated efficient conversion of sulfide back to sulfate, enabling recirculation and marginal sulfate requirement.
Conclusions:
- The innovative method effectively stabilizes landfills by promoting organic matter decomposition and denitrification.
- The symbiotic microbial processes are efficient and sustainable, with potential for sulfate recirculation.
- This approach offers an effective and economic solution for early landfill stabilization.
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