A composite carbon source and its application

Through the use of composite carbon sources, the problem of insufficient carbon sources in sewage treatment plants is solved, the removal rates of total nitrogen and total phosphorus are improved, and the effluent quality is guaranteed. It is suitable for carbon source nutrient supplementation in sewage treatment plants.

CN116605987BActive Publication Date: 2025-09-12XIN JIANG BI SHUI TONG YU HUAN BAO KE JI YOU XIAN GONG SI FU KANG FEN GONG SI
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Patent Information

Application Number
CN202310712013.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-14
Publication Date
2025-09-12
Estimated Expiration
2043-06-14

AI Technical Summary

Technical Problem

The low carbon source content in existing sewage treatment plants results in a lack of electron donors for denitrifying bacteria, making it difficult to convert nitrates, which can easily lead to excessive total nitrogen in the effluent. Conventional single carbon sources may also destroy the ecological balance of microorganisms.

Method used

A composite carbon source is provided, which is compounded by monosaccharides, fucoidan, polyols, fatty acids, rhamnolipids and vitamins, and is used to supplement the carbon source required for denitrification in the biochemical system and phosphorus release by polyphosphate bacteria, thereby improving the removal rate of total nitrogen and total phosphorus.

Benefits of technology

It significantly improves the removal rate of total nitrogen and total phosphorus, ensures that the effluent meets the discharge standards, is suitable for industrial mass production, and does not destroy the microbial ecological balance.

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Abstract

The present invention relates to a composite carbon source and its application, and relates to the field of sewage treatment technology. The composite carbon source comprises the following components, measured by weight: 10 to 20 parts of monosaccharide, 5 to 10 parts of fucoidan, 20 to 30 parts of polyol, 5 to 10 parts of fatty acid, 1 to 5 parts of rhamnolipid, and 0.5 to 1 part of vitamin. The composite carbon source provided by the present invention is mainly composed of monosaccharide, fucoidan, polyol, fatty acid, rhamnolipid and vitamin, and can be used to supplement the carbon source nutrients of activated sludge in sewage treatment plants. It can not only effectively supplement the carbon source required for denitrification in the biochemical system, but also supplement the carbon source required for phosphorus release by polyphosphate bacteria, thereby significantly improving the removal rate of total nitrogen and total phosphorus, and ensuring that the effluent meets the discharge standards.
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