Floating copper-loaded sodium alginate hydrogel sphere and preparation method and application thereof

By preparing floating type copper-loaded sodium alginate hydrogel spheres, the water pollution problem caused by copper-based algal acids is solved when treating cyanobacteria water blooms, and the effect of releasing copper ions for a long time is achieved, reducing the number of algae removal times, and reducing labor costs and pollution risks.

CN119385149BActive Publication Date: 2025-03-25SICHUAN QINGHE TECH
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Patent Information

Application Number
CN202411982606.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-25
Estimated Expiration
2044-12-31

AI Technical Summary

Technical Problem

When treating cyanobacteria blooms, existing copper-based algae drugs are prone to over-injection of copper ions, causing water pollution, and the release cycle is long and costly. Traditional algae removers are prone to exceed the standard during the treatment process, resulting in heavy metal pollution of water and bottom sludge.

Method used

The preparation method of the floating copper-carrying sodium alginate hydrogel sphere is adopted. Solutions A and B are prepared, and the solution A and B are added dropwise and stirred, and then left to stand to form a hydrogel sphere. Then, the copper sulfate on the surface is filtered out and washed to remove the surface, and the floating copper sulfate is obtained. The hydrogel ball can float on the water surface, release copper ions at low doses for a long time, and continuously kill cyanobacteria on the water surface.

Benefits of technology

This method can effectively reduce the number of algae removal agents, reduce the risk of water pollution caused by excessive copper ion release, and reduce the labor cost caused by long-term algae injection. Since hydrogel balls can be recycled, they will not cause secondary pollution to the water.

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Abstract

The invention relates to a buoyant copper-loaded sodium alginate hydrogel ball and a preparation method and application thereof, and belongs to the technical field of water ecological restoration. The technical problem solved by the invention is to provide a preparation method of a buoyant copper-loaded sodium alginate hydrogel ball. The method first prepares solution A and solution B, wherein solution A is composed of sodium alginate, citrate, acidic pH regulator, hydrogen peroxide and water; solution B is composed of copper sulfate pentahydrate, citrate, pH regulator and water; solution A is added dropwise to solution B to obtain a hydrogel ball; the hydrogel ball is filtered out and washed. The hydrogel ball of the invention can float on the water surface and release copper ions at a low dose for a long time, continuously kill blue algae on the water surface, have little effect on the water body, and can greatly reduce the risk of water pollution caused by excessive copper ion administration; the number of times the algaecide is administered can be effectively reduced, and the labor cost caused by the long-term administration of the algaecide is also reduced. The hydrogel ball can float on the water surface and be easy to recycle, and will not cause secondary pollution to the water body.
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