一体化AO生物反应器

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By designing cylindrical anaerobic and aerobic zones in the AO bioreactor and optimizing the contact between wastewater and bacterial sludge using sludge mixing and water conveyance components, the problem of insufficient contact between anaerobic bacteria packing and aerobic bacteria was solved, thereby improving the efficiency and progress of the denitrification reaction.

CN224513301UActive Publication Date: 2026-07-17SHANGHAI PANGKE ENVIRONMENTAL TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANGHAI PANGKE ENVIRONMENTAL TECH CO LTD
Filing Date: 2025-07-22
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

In existing AO bioreactors, anaerobic bacteria packing material and aerobic bacteria can easily form large-area contact, and it is difficult for wastewater to form effective contact with anaerobic bacterial sludge after entering, resulting in a slowdown in the denitrification reaction.

Method used

An integrated AO bioreactor was designed, comprising a cylindrical anaerobic zone and an aerobic zone surrounding it. The anaerobic packing material is stirred by a sludge stirring component, and water is alternately injected and aerated using a water conveying component. This avoids large-area contact between the anaerobic and aerobic packing materials, ensuring sufficient contact between the wastewater and the anaerobic sludge.

Benefits of technology

It improves the efficiency and speed of the denitrification reaction, prevents the anaerobic bacteria packing from being damaged by aeration, and maintains the applicability and effectiveness of the reactor.

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Abstract

本实用新型公开了一体化AO生物反应器，包括反应池体，反应池体内部分为好氧区和厌氧区，好氧区围绕厌氧区周侧设置，所述厌氧区内腔为圆筒状结构，所述厌氧区顶部设置有搅泥组件，通过搅泥组件对厌氧区底部沉积的厌氧菌填料进行翻搅，所述反应池体顶部一侧还设置有输水组件，通过输水组件对好氧区和厌氧区中的水进行交替输注，所述好氧区上部一侧开设有溢流口，当污水进入厌氧区内腔后，此时可开启减速电机，通过电机带动转轴和浆片缓慢旋转，并对池底沉淀的厚重厌氧菌填料进行翻搅上涌，持续片刻，使得污水和填料形成充分接触及混合，加快了在随后沉淀时的反应效率及脱氮进度。

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Claims

1. An integrated AO bioreactor characterized in that, The reaction tank (100) is divided into an aerobic zone (110) and an anaerobic zone (120). The aerobic zone (110) is arranged around the anaerobic zone (120). The anaerobic zone (120) has a cylindrical inner cavity. A sludge stirring assembly (200) is provided at the top of the anaerobic zone (120) to stir the anaerobic bacteria packing material deposited at the bottom of the anaerobic zone (120). A water conveying assembly (300) is also provided on one side of the top of the reaction tank (100) to alternately convey water to the aerobic zone (110) and the anaerobic zone (120).

2. The integrated AO bioreactor of claim 1, wherein: An overflow outlet (140) is provided on one side of the upper part of the aerobic zone (110), and an overflow weir (150) corresponding to the overflow outlet (140) is fixed on the outside of the reaction tank (100).

3. The integrated AO bioreactor of claim 1, wherein: A clarification device (400) is provided in the upper middle part of the inner side of the aerobic zone (110), and the overflow port (140) is located above the clarification device (400).

4. The integrated AO bioreactor of claim 1, wherein: The top of the reaction tank (100) is fixed with a bridge plate (130), and the bridge plate (130) spans across the aerobic zone (110) and the anaerobic zone (120); The mud-stirring assembly (200) includes a rotating shaft (210) vertically mounted on the bridge plate (130) and coaxially arranged with the anaerobic zone (120), a bearing sleeve (220) arranged at the connection between the rotating shaft (210) and the bridge plate (130), a motor (230) fixed to the upper end of the bridge plate (130) and used to drive the rotating shaft (210) to rotate axially, and a plurality of slurry blades (240) fixed to the lower periphery of the rotating shaft (210).

5. The integrated AO bioreactor of claim 1, wherein: The water delivery assembly (300) includes a bidirectional suction pump (310) disposed on the upper part of the bridge plate (130), a first water delivery pipe (320) with one end connected to the bidirectional suction pump (310) and the other end protruding into the middle section of the anaerobic zone (120), and a second water delivery pipe (330) with one end connected to the bidirectional suction pump (310) and the other end passing through the clarification device (400) and protruding into the lower section of the aerobic zone (110).

6. The integrated AO bioreactor of claim 1, wherein: The aerobic zone (110) is provided with aeration pipes (600) on the bottom periphery. The reaction tank body (100) is provided with an air pipe connector (610) connected to the aeration pipes (600) on the outside. The air pipe connector (610) is connected to the blower through an external pipe.

7. The integrated AO bioreactor of claim 1, wherein: The upper part of the outer side of the reaction tank (100) is also provided with a sewage inlet pipe (500) connected to the anaerobic zone (120), and a liquid pump (510) is provided on the sewage inlet pipe (500).

8. The integrated AO bioreactor of claim 1, wherein: The bottom outer side of the reaction tank (100) is provided with a sludge discharge pipe 1 (160) connected to the anaerobic zone (120) and a sludge discharge pipe 2 (170) connected to the aerobic zone (110).