Mobile microbial electrochemical module system for performance recovery of anaerobic digestion tanks

The mobile microbial electrochemical module system addresses inefficiencies in anaerobic digesters by decomposing high-molecular substances and monitoring digester conditions, enhancing biogas production and methane output while stabilizing operations.

KR102999154B1Active Publication Date: 2026-08-03IND ACADEMIC COOP FOUND CHOSUN UNIV
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Patent Information

Application Number
KR1020240168976
Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2026-08-03
Estimated Expiration
2044-11-22

AI Technical Summary

Technical Problem

Existing anaerobic digesters face challenges in stabilizing methane production due to slow growth rates of methane-producing bacteria, sensitivity to environmental changes, and inefficiencies in biogas production, particularly when faced with variable organic waste loads and pH fluctuations, leading to significant time and economic losses.

Method used

A mobile microbial electrochemical module system is installed outside the anaerobic digester, utilizing a spiral-wound oxidation and reduction electrode configuration to decompose high-molecular substances in digestate, enabling electron transfer and real-time monitoring of digester conditions to restore efficiency through intermittent side stream circulation.

Benefits of technology

The system enhances biogas production by decomposing polymeric substances, rapidly responding to digester issues, improving organic matter and methane production efficiency, and ensuring stable operation by addressing VFAs accumulation and pH changes.

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Abstract

The present invention relates to a mobile microbial electrochemical module system for restoring the performance of an anaerobic digester, and more specifically, to a mobile microbial electrochemical module system for restoring the performance of an anaerobic digester characterized by installing a mobile module body outside the anaerobic digester, decomposing polymeric substances in the digestion liquid circulating between the anaerobic digester and the mobile module body with electroactive microorganisms using voltage applied from the main unit to produce carbon dioxide and bicarbonate ions, and reducing the carbon dioxide and bicarbonate ions through electrochemical methane reduction to produce methane.
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