Aerobic denitrifying bacterium and application thereof

By screening out strain 752 of the genus Raoulbacterium, which has the ability to perform aerobic denitrification and azithromycin degradation, the problem of inhibited nitrification-denitrification process under high concentrations of AZM was solved, achieving efficient removal of antibiotics and nitrogen, and making it suitable for the treatment of water bodies with complex pollution.

CN121472089APending Publication Date: 2026-02-06XIAN UNIV OF TECH
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Patent Information

Application Number
CN202511673081.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-14
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

Under high concentrations of azithromycin (AZM), the nitrification-denitrification process is easily inhibited, making it difficult to effectively remove antibiotic residues and inorganic nitrogen pollution from water bodies.

Method used

Raoultella sp. strain 752 was screened and isolated. It has dual functions of aerobic denitrification and azithromycin degradation and can be used to prepare microbial agents. It can efficiently degrade AZM and carry out aerobic denitrification under high concentration of AZM.

Benefits of technology

It maintains stable growth in high-concentration AZM environments, significantly improves nitrogen removal efficiency, simplifies the treatment process, and reduces energy consumption and operation and maintenance costs, making it suitable for the efficient treatment of complex polluted wastewater.

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Abstract

The invention belongs to the technical field of environmental microorganisms, and particularly relates to an aerobic denitrifying bacterium and application thereof, the aerobic denitrifying bacterium is Raoultella sp. 752, is preserved in China General Microbiological Culture Collection Center (CGMCC) on July 22, 2025, has the preservation number of CGMCC No.35338, and has the preservation number of CGMCC No.35338; the strain has the capability of synchronously degrading high-concentration AZM and nitrate, has the advantages of high adaptability, simplicity, feasibility and the like, and can be directly used for denitrification treatment of high-concentration AZM-containing wastewater in pharmacy, culture and the like.
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