A discrete carbon-based biological substrate for targeted treatment of high-concentration organic wastewater and its preparation process

By using a composite material of activated carbon fiber, PLA fiber, sodium lignosulfonate, magnetite magnetic particles and carbon nitride catalyst, combined with BiPO4 doped in the carbon nitride catalyst, a Z-shaped heterojunction is formed, which solves the problem of slow degradation after adsorption of discrete carbon-based materials, and achieves rapid adsorption and catalytic degradation, thus enabling efficient targeted treatment of organic wastewater.

CN121913595BActive Publication Date: 2026-05-26HUNAN ZHONGFU ENVIRONMENTAL PROTECTION TECH RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN ZHONGFU ENVIRONMENTAL PROTECTION TECH RES INST CO LTD
Filing Date
2026-03-26
Publication Date
2026-05-26

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Abstract

This application relates to the field of adsorption materials, and specifically relates to a discrete carbon-based biological substrate for targeted treatment of high-concentration organic wastewater and its preparation process, which includes the following components in parts by weight: 65-70 parts of activated carbon fiber, 8-10 parts of PLA fiber, 5-7 parts of sodium lignosulfonate, 5-8 parts of magnetite magnetic particles, and 8-10 parts of carbon nitride catalyst. BiPO4 is doped in the carbon nitride catalyst. For the discrete carbon-based biological substrate of this application, the activated carbon fiber rapidly adsorbs organic matter in high-concentration wastewater, and PLA releases a carbon source to accelerate the formation of a biofilm, and the biofilm degrades with the adsorbed organic matter as a substrate; the carbon nitride catalyst produces reactive oxygen under visible light to oxidize small molecular acids, and the magnetite magnetic particles catalyze the reaction to break down difficult-to-detoxify toxins (such as antibiotics); after the reaction, the material is recovered by a magnetic field, and sodium lignosulfonate protects the magnetite magnetic particles from corrosion and provides regeneration performance.
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