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Updated: Jun 27, 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
High-rate denitrifying sulfide removal process in expanded granular sludge bed reactor
Chuan Chen1, Aijie Wang, Nanqi Ren
1State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioresource Technology
|December 17, 2008
Summary
This study demonstrates an innovative expanded granular sludge bed (EGSB) reactor for efficient simultaneous removal of sulfide, nitrate, and acetate. The novel bioreactor achieved high removal efficiencies, significantly outperforming existing technologies.
Area of Science:
- Environmental Engineering
- Biotechnology
- Wastewater Treatment
Background:
- Sulfide, nitrate, and acetate are common pollutants in industrial wastewater.
- Simultaneous removal of these pollutants is challenging and requires advanced treatment methods.
Purpose of the Study:
- To develop and evaluate an expanded granular sludge bed (EGSB) reactor for simultaneous sulfide, nitrate, and acetate conversion.
- To assess the efficiency and performance of the EGSB reactor compared to existing technologies.
Main Methods:
- Utilized an expanded granular sludge bed (EGSB) reactor for bio-granule incubation.
- Quantified the conversion rates and efficiencies of sulfide, nitrate, and acetate.
- Performed mass balance calculations for sulfur, nitrogen, and carbon to validate performance.
Main Results:
- Achieved high removal efficiencies: 97% for sulfide (4.8 kg-Sm(-3) d(-1)), 92% for nitrate (2.6 kg-Nm(-3) d(-1)), and 95% for acetate (2.7 kg-Cm(-3) d(-1)).
- Demonstrated significantly higher reactor performance compared to previously reported studies.
- Mass balance confirmed the high efficiency of pollutant conversion.
Conclusions:
- The EGSB reactor is highly effective for simultaneous removal of sulfide, nitrate, and acetate from wastewater.
- The study elucidates the autotrophic and heterotrophic denitrification pathways involved in nitrogen conversion.
- This technology offers a promising solution for advanced wastewater treatment.
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