A low-temperature aerobic denitrifying Pseudomonas silesiensis W2-12b and its application
By screening and applying the low-temperature aerobic denitrifying strain Pseudomonas silesiensis W2-12b from Antarctic environmental samples, the problem of low nitrogen removal efficiency under low-temperature conditions was solved, achieving efficient wastewater treatment, especially in cold regions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POLAR RES INST OF CHINA
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-29
AI Technical Summary
Existing aerobic denitrifying bacteria exhibit reduced denitrification efficiency and easy accumulation of nitrite under low-temperature conditions, limiting the effectiveness of wastewater treatment in cold regions.
A low-temperature, high-efficiency aerobic denitrifying strain, Pseudomonas silesiensis W2-12b, derived from Antarctic environmental samples, was screened. Through whole-genome sequencing and functional annotation, it was found that it possesses a complete denitrification pathway and multiple low-temperature adaptation-related genes, making it suitable for wastewater treatment.
At 15℃, Pseudomonas silesiensis W2-12b exhibited highly efficient denitrification capabilities, with a nitrate removal rate exceeding 99.8% and a nitrite accumulation rate below 1.5 μmol/L, providing a novel functional bacterial strain resource for wastewater treatment under low-temperature conditions.
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