A low-temperature high-efficiency composite filter material for domestic sewage treatment and a preparation method thereof

By preparing composite filter media, the synergistic effect of amphoteric polymerized grafted skeleton particles, manganese composite nitrogen-phosphorus porous carbon particles, and calcium-magnesium composite cross-linked microspheres was utilized to solve the problems of insufficient water purification performance and wear resistance of filter media under low temperature and low oxygen conditions, and to achieve stable organic matter removal and structural stability.

CN122166869APending Publication Date: 2026-06-09GUANGZHOU HUANTOU ENVIRONMENTAL SERVICES CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU HUANTOU ENVIRONMENTAL SERVICES CO LTD
Filing Date
2026-01-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Under low temperature and low oxygen conditions, traditional filter media have insufficient water purification performance and wear resistance, resulting in unstable organic matter removal efficiency and easy adsorption decay and structural degradation, making it difficult to meet the treatment needs of cold regions or high-load conditions.

Method used

By preparing a composite filter material, amphoteric polymer grafted framework particles, manganese composite nitrogen-phosphorus porous carbon particles, and calcium-magnesium composite cross-linked microspheres are used. Surface modification and covalent cross-linking are carried out using silane coupling agents and hexamethylene diisocyanate to construct a composite filter material with multi-level pores and interfacial heterogeneity, thereby achieving the synergistic function of adsorption, catalysis, and physical interception.

Benefits of technology

Under low temperature and low oxygen conditions, the composite filter media exhibits a stable organic matter reduction effect, improves the continuity of catalytic conversion and mechanical properties, reduces breakage rate and wear, and ensures the stability and durability of the water purification system.

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Abstract

The application discloses a kind of low-temperature high-efficiency domestic sewage treatment composite filter material and preparation method thereof, belong to filter material preparation technical field, for solving the technical problem that the low-temperature low-oxygen water purification performance and wear resistance of sewage treatment filter material in prior art need to be further improved;The application is through the ordered combination of three materials of amphoteric polymer grafting skeleton particle, manganese composite nitrogen and phosphorus porous carbon particle and calcium-magnesium composite crosslinking microsphere, prepare the composite filter material with good interface structure, energy level matching and mechanical stability, provide excellent interface continuity for amphoteric polymer grafting skeleton particle, manganese composite nitrogen and phosphorus porous carbon particle optimizes reaction link, enhances organic matter removal capacity, calcium-magnesium composite crosslinking microsphere improves the mechanical stability and durability of whole, the prepared composite filter material can still maintain stable organic matter removal capacity under low-temperature low-oxygen condition, and show good anti-crushing, wear resistance and acid resistance in long-term operation.
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