A method for removing impurities from cattle urine and application thereof in preparation of algal culture solution

By combining chelating agents and activated carbon adsorption with multi-stage treatment of compound microbial fermentation, the problem of impurity removal in cow urine has been solved, achieving efficient, environmentally friendly, and low-cost preparation of algae culture medium, and improving algae growth efficiency and nutrient supply.

CN120463371BActive Publication Date: 2026-07-24GUOGANGTONG (BEIJING) DIGITAL TECH CO LTD
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Patent Information

Application Number
CN202510606622.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-12
Publication Date
2026-07-24
Estimated Expiration
2045-05-12

AI Technical Summary

Technical Problem

Existing methods for removing impurities from cow urine are ineffective at removing small molecule impurities and microorganisms. Chemical methods may leave chemical residues, while biological methods lack efficient microbial strains and mature processes, affecting the quality and cost of algae culture media.

Method used

A multi-stage treatment system combining chelating agents and activated carbon adsorption with composite microbial fermentation and precision filtration is adopted. This system includes the synergistic effects of ethylenediaminetetraacetic acid, powdered activated carbon, Bacillus pasteurellii, Bacillus subtilis, and Lactobacillus plantarum to remove heavy metals, precipitates, and organic matter, and degrade urea and protein.

Benefits of technology

It effectively removes macromolecular pollutants and harmful microorganisms from cow urine, retains beneficial nutrients, reduces the cost of algae culture medium, and improves algae growth efficiency and quality.

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Abstract

The application discloses a method for removing impurities from cow urine and application thereof in preparation of algal culture solution, and relates to the technical field of biological treatment. The method for removing impurities from cow urine adopts a multistage treatment system of chelating agent removal, activated carbon adsorption, physical filtration, composite microbial fermentation and precision filtration; the physical filtration adopts a stainless steel filter screen; the microbial fermentation adopts a composite microbial agent containing bacillus pasteurii, bacillus subtilis and lactobacillus plantarum; and the precision filtration adopts a microporous filter membrane. The application develops an efficient, environment-friendly and low-cost method for removing impurities from cow urine, removes macromolecular contaminant substances and harmful microorganisms and the like impurities in the cow urine, and meanwhile retains beneficial nutrient components in the cow urine; high-quality algal culture solution is prepared through the impurity-removed cow urine, the cost of the algal culture solution is reduced, and the nutrient components in the cow urine are fully utilized, so that abundant nutrient substances are provided for the growth of algae.
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