Achromobacter and bacterial agent thereof and application of the same in treatment of thallium-containing wastewater by artificial wetland

By applying Achromobacterium QBM-4 and its inoculant to generate bio-manganese oxides in constructed wetlands, the problems of insufficient removal efficiency and unstable operation of constructed wetlands in treating thallium-containing wastewater were solved, achieving efficient and stable thallium removal and low-cost operation.

CN122128186BActive Publication Date: 2026-07-21HUNAN AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN AGRI UNIV
Filing Date
2026-04-29
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing technologies, constructed wetlands have insufficient removal efficiency, unstable operation, and high cost when treating thallium-containing wastewater, making it difficult to meet the requirements for deep removal and stable compliance of low-concentration thallium.

Method used

By using Achromobacterium QBM-4 and its inoculant, bio-manganese oxide (Bio-MnOx) is generated in constructed wetlands, forming a plant-microorganism-mineral synergistic thallium removal chain, and utilizing the natural metabolism of microorganisms to achieve efficient and stable thallium removal.

Benefits of technology

It achieves a stable thallium removal rate of over 99%, with thallium concentration in the effluent below 5 µg/L, meeting stringent emission standards. It also boasts low operating costs and eliminates the need for frequent adjustments, thus reducing the risk of secondary pollution.

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Abstract

The application provides a colorless bacillus, a bacterial agent thereof and application of the colorless bacillus in treatment of thallium-containing wastewater in an artificial wetland, the colorless bacillus is colorless bacillus QBM-4 ( ), which is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M20211051, and the preservation date is August 18, 2021. The bacterial agent is obtained by fermentation of the colorless bacillus. The application utilizes the strain to generate 'bio-source manganese oxide (Bio-MnOx)' in situ in a wetland system, realizes selective fixation of thallium, realizes that the removal rate of low-concentration thallium-containing wastewater is >99% under the premise of extremely low operation cost, and meets the requirements of economy, high efficiency and stability, and can be applied to treatment of thallium-containing wastewater in an artificial wetland.
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