Evaluating organic matter removal efficiency in pig farm wastewater after biogas tank using a two-stage filtration system with biochar from Mimosa pigra
Vol. 134 No. 1C (2025), Original Article
Vol. 134 No. 1C (2025)

Evaluating organic matter removal efficiency in pig farm wastewater after biogas tank using a two-stage filtration system with biochar from Mimosa pigra

Original Article
https://doi.org/10.26459/hueunijns.v134i1C.8089
Published 2025-09-30
Nguyen Thi Phuong*
Quang Tri Branch - Hue University, Quang Tri, Vietnam
Xuan Cuong Nguyen
Duy Tan University, Da Nang, Vietnam
Thi Cuc Phuong Tran
Quang Tri Branch - Hue University, Quang Tri, Vietnam
Thi Hoai Giang Nguyen
Quang Tri Branch - Hue University, Quang Tri, Vietnam
Thi Thao Nguyen Nguyen
Quang Tri Branch - Hue University, Quang Tri, Vietnam
PDF (Vietnamese)

Keywords

biochar
Mimosa pigra
pig farm wastewater
organic loading rate
hydraulic loading rate biochar
Mai dương
nước thải chăn nuôi lợn
tải lượng hữu cơ
tải lượng thủy lực

How to Cite

1.
Nguyễn TP, Nguyễn XC, Trần TCP, Nguyễn THG, Nguyễn TTN. Evaluating organic matter removal efficiency in pig farm wastewater after biogas tank using a two-stage filtration system with biochar from Mimosa pigra. hueuni-jns [Internet]. 2025Sep.30 [cited 2025Oct.7];134(1C):147-5. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/8089
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Abstract

This study uses biochar from Mimosa pigra plants as the filter material for a two-stage anaerobic-aerobic filtration system, aiming to evaluate the organic matter removal efficiency in pig farm wastewater after passing through a biogas tank. Two identical experimental systems, A and B, were designed, each consisting of an anaerobic filter column and an aerobic filter tank. System A operated with an organic loading rate (OLR) ranging from 71.11 to 243.75 g COD/m³/day and a hydraulic loading rate (HLR) ranging from 74.94 to 112.41 L/m²/day, while system B operated with an OLR from 103.26 to 493.01 g COD/m³/day and an HLR from 37.47 to 112.41 L/m²/day. The results show that both systems achieved a high COD (chemical oxygen demand) removal efficiency, with system B averaging 87 ± 4%, higher than system A (86 ± 3%), despite system B's higher OLR. Balancing HLR and OLR, depending on the actual conditions of the filter tank, influent loading, and treatment requirements, is crucial for optimizing the treatment efficiency and ensuring the economic viability.

https://doi.org/10.26459/hueunijns.v134i1C.8089
PDF (Vietnamese)

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