Performance Comparison between Anaerobic Hybrid Reactor and Anaerobic Continuous Stirred-Tank Reactor for High-Strength Fresh Leachate Treatment
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The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand
Center of Excellence on Energy Technology and Environment (CEE), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, 10140, Thailand
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok,10900, Thailand
Biotechnology Program, School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi, Bangkhunthian, Bangkok, 10150, Thailand
Submission date: 2023-05-25
Final revision date: 2023-09-14
Acceptance date: 2023-11-02
Online publication date: 2024-01-04
Publication date: 2024-02-28
Corresponding author
Komsilp Wangyao   

The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi, 126 Prachauthit Rd, Bangmod, Tungkru, 10140, Bangkok, Thailand
Pol. J. Environ. Stud. 2024;33(3):2307-2315
This study aimed to examine the performance of an anaerobic hybrid reactor (AHR) and an anaerobic continuous stirred tank reactor (CSTR) for treating high-strength fresh leachate. As the organic loading rate (OLR) was increased in both systems, the pH decreased, with the lowest pH corresponding to an OLR of 25-30 kgCOD/m3·d. The AHR system demonstrated instability in total volatile fatty acids when the OLR increased to 20 kgCOD/m3·d. The highest methane (CH4) content was achieved when the OLR was 15 kgCOD/m3·d. Moreover, the AHR showed excellent sediment retention. When the OLR increased, volatile suspended solids (VSS) in the system increased. The CH4 content tended to increase as the OLR increased up to 20 kgCOD/m3·d. The highest CH4 content in the AHR was 68%, which was higher than that of the CSTR. The CSTR could not produce biogas when the OLR was 20 kgCOD/m3·d. The optimal OLR for the operation of AHR and CSTR treating fresh leachate was found to be 15 and 10 kgCOD/m3·d respectively.
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