A folded plate type anaerobic biological reactor and application thereof in treating aquaculture wastewater

By employing a multi-compartment structure and polyurethane foam packing in the anaerobic bioreactor, the problems of oxygen infiltration and sludge loss were solved, achieving efficient treatment of aquaculture wastewater and increased biogas production.

CN122444334APending Publication Date: 2026-07-24CHONGQING ANIMAL HUSBANDRY TECH EXTENSION STATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING ANIMAL HUSBANDRY TECH EXTENSION STATION
Filing Date
2026-05-13
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing anaerobic folding reactors (ABRs) are inadequate in preventing oxygen from entering when treating aquaculture wastewater, allowing oxygen to easily penetrate and disrupt the anaerobic environment. Furthermore, the conflict between sludge retention and archaea preservation is prominent, leading to decreased reactor stability and low biogas production.

Method used

A folded plate anaerobic bioreactor is designed, which adopts a multi-compartment structure inside the box and polyurethane foam packing. It isolates the entry of air and directionally enriches slow-growing anaerobic bacteria. Combined with a three-phase separator and thermal insulation materials, it improves the control of oxygen intrusion and sludge loss.

Benefits of technology

It effectively blocks oxygen infiltration, improves anaerobic nitrification efficiency, extends the stable operation cycle of the reactor, increases biogas yield and purity, and enhances the reactor's resistance to shock loads.

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Abstract

The application discloses a kind of folded plate type anaerobic biological reactors, including box, the water inlet and water outlet are equipped in two opposite side walls of the box;Box is sequentially provided with at least two reaction compartments, the top of upstream reaction compartment is communicated with the lower part of downstream reaction compartment, the water inlet is communicated with the lower part of first reaction compartment of head end, the water outlet is communicated with the top of last reaction compartment of terminal end;The side wall of the box above the water outlet is further provided with exhaust port;Each reaction compartment is respectively provided with biological filler module, and the biological filler module includes polyurethane foam filler.The application further discloses an application of the folded plate type anaerobic biological reactor in treating aquaculture wastewater.The technical scheme of the application has the remarkable effects of significantly improving oxygen resistance, outstanding archaea enrichment effect, double improvement of treatment efficiency and biogas quality, and significant resource value.
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