An aerated membrane bioreactor

By designing an inner tank and inner support plate structure in the aerated membrane bioreactor, combined with the alternating distribution of aeration plates and filter membranes, and utilizing lateral and swirling flow to remove sludge, the problems of retention angle and sludge adhesion are solved, achieving efficient cleaning of the filter membrane and improving wastewater treatment efficiency.

CN122444331APending Publication Date: 2026-07-24SHENYANG INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG INST OF TECH
Filing Date
2026-04-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing MABR membrane aerated bioreactors suffer from problems such as easy formation of retention angle, severe sludge adhesion, frequent maintenance, and high maintenance costs.

Method used

An aerated membrane bioreactor is designed, which uses a reaction chamber composed of an inner tank and an inner support plate, combined with alternating distribution of aeration plates and filter membranes. It uses transverse and rotating sewage flow to remove sludge, and the up-and-down swing of the filter membrane and the air bubble flushing of the aeration plates are achieved by driving the adjustment mechanism to improve the cleaning effect of the membrane.

Benefits of technology

It extends the service life of the filter membrane, reduces the maintenance frequency and cost of wastewater treatment, and improves wastewater treatment efficiency and purification effect.

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    Figure CN122444331A_ABST
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Abstract

The application relates to the field of sewage aeration purification technology, and discloses an aeration membrane bioreactor, which comprises an outer tank body, an inner tank body and an inner support plate are fixedly connected in the inner tank body, an outer layer cavity is formed between the outer tank body, the inner tank body and the inner support plate, and a reaction cavity is formed in the inner tank body and the inner support plate; an aeration membrane reaction mechanism for carrying out aeration membrane biological reaction is arranged in the reaction cavity; and a reflux pipe is arranged outside the outer layer cavity. The sewage in the reaction cavity penetrates through the filter ring and flows into the inner cavity of the filter ring, and then flows to the outer layer cavity, and is introduced into the reaction cavity again through the reflux pipe and the water inlet pipe, so that transverse flow of the sewage to the center position of the reaction cavity is formed, the sewage in the transverse flow is used to remove the sludge adhered in the sewage treatment process of the aeration membrane reaction mechanism, the service life of the device is improved, the cleaning frequency of the aeration membrane reaction mechanism is reduced, the cost of the sewage treatment is reduced, and the sewage treatment efficiency is improved.
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