Denitrification slow-release composite carbon source as well as preparation method and application thereof

By providing a denitrification sustained release composite carbon source containing a variety of nutrients, the problems of poor stability and high operating costs of biological treatment systems caused by the addition of a single carbon source in the sewage treatment plant are solved, and efficient nitrogen removal effect and resource reuse are achieved.

CN119660959APending Publication Date: 2025-03-21ZHENGZHOU AIRPORT MINGGANG WATER CO LTD
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Patent Information

Application Number
CN202510106470.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

The biological treatment system stability and impact resistance of sewage treatment plants caused by the addition of a single carbon source are poor, large carbon source injection, high operating costs, high transportation costs, large sludge production, and safety hazards.

Method used

It provides a denitrification sustained release composite carbon source, its raw materials include hydroxyacrylic acid, sugar, straw waste liquid, kitchen waste liquid, porous volcanic ash, polyvinyl alcohol, inorganic salts, polypeptides, growth factors, MFC agar, cellulase, protease and denitrifying bacteria agents, and forms a microstructure-optimized composite system through a variety of physical and chemical actions to achieve stable sustained release of the carbon source.

Benefits of technology

It significantly improves the activity of denitrifying bacteria and the metabolic efficiency of microorganisms, extends the duration of denitrification effect, improves the denitrification efficiency, reduces operation and transportation costs, reduces sludge production, enhances the stability and impact resistance of the system, and realizes the reuse of waste kitchen waste liquid and straw waste liquid.

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Abstract

The invention relates to the technical field of water treatment, in particular to a denitrification slow-release composite carbon source as well as a preparation method and application thereof. Comprising the following components in percentage by weight: 2-10% of hydroxy acrylic acid, 2-10% of saccharides, 5-15% of straw waste liquid, 5-15% of kitchen waste liquid, 2-10% of saccharides, 3-15% of porous volcanic ash, 5-15% of polyvinyl alcohol, 0.2-1% of inorganic salt, 1-2% of polypeptide, 0.5-1% of growth factors, 0.2-1.5% of MFC agar, 0.1-0.5% of cellulase, 0.1-0.5% of protease, 0.1-0.5% of denitrifying bacteria and the balance of water. The sum of the percentages of the raw materials is 100%. The invention has the advantages that: each nutrient component is balanced, the nutrition is comprehensive, the activity of denitrifying bacteria is improved, the number of species and community layers of a biological system of a sewage treatment plant are increased, the growth of various microorganisms is facilitated, nutrient substances can be fully utilized, and the denitrification effect is far higher than that of related carbon sources such as single methanol, glucose and the like.
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