Heterotrophic nitrification-aerobic denitrification bacterium resistant to high ammonia nitrogen and high organic matters and application of heterotrophic nitrification-aerobic denitrification bacterium in landfill leachate treatment

By using heterotrophic nitrification-aerobic denitrifying bacteria that are resistant to high ammonia nitrogen and high organic matter, the problems of low treatment efficiency of waste leachate and difficult to meet the water quality in the prior art are solved, and the efficient removal of ammonia nitrogen, nitrate nitrogen and organic matter in the garbage leachate is achieved, and the treatment efficiency and water quality are improved.

CN119752712AActive Publication Date: 2025-04-04北京市科学技术研究院资源环境研究所(北京市土地修复工程技术研究中心)
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Patent Information

Application Number
CN202411948698.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-04-04
Estimated Expiration
2044-12-27

AI Technical Summary

Technical Problem

When treating waste leachate, the existing biological denitrification process has poor tolerance to organic compounds, long culture cycle, weak load tolerance, and the traditional denitrification microorganisms have insufficient tolerance to high concentrations of ammonia nitrogen, resulting in low treatment efficiency and difficult water quality to meet standards.

Method used

Heterotrophic nitrification-aerobic denitrification bacteria that are resistant to high ammonia nitrogen and high organic matter, specifically Paracoccus pantotrophus HNAD-9. Through its heterotrophic nitrification and aerobic denitrification capabilities, the ammonia nitrogen, nitrate nitrogen and organic matter in the garbage leachate are simultaneously removed.

Benefits of technology

It has achieved efficient removal of ammonia nitrogen, nitrate nitrogen and organic matter in the garbage leachate in the environment of high ammonia nitrogen and high organic matter, shortened the nitrogen removal cycle, improved the treatment efficiency, and reduced the accumulation of nitrosy nitrogen, reducing the impact on the environment and health.

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Abstract

The invention discloses a heterotrophic nitrification-aerobic denitrification bacterium resistant to high ammonia nitrogen and high organic matters and application of the heterotrophic nitrification-aerobic denitrification bacterium in landfill leachate treatment. The heterotrophic nitrification-aerobic denitrification bacterium provided by the invention is Paracoccus pantotrophus HNAD-9, the strain is preserved in the General Microbiological Culture Collection Center of the China Committee for Culture Collection of Microorganisms on August 22, 2024, and the preservation number of the strain is CGMCC No.31698. The invention further discloses a preparation method of the heterotrophic nitrification-aerobic denitrification bacterium. According to the method, ammonia nitrogen, nitrate nitrogen and nitrite nitrogen can be removed in the same heterotrophic and aerobic system at the same time, accumulation of nitrate nitrogen and nitrite nitrogen is avoided in the ammonia nitrogen removal process, and the method has important application prospects in the field of high-ammonia-nitrogen and high-organic-matter-concentration landfill leachate treatment.
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