A slow-release algae-inhibiting microsphere and its preparation method and application

Abstract

The invention provides a slow-release algae-inhibiting microsphere, a preparation method and application thereof. The slow-release algae-inhibiting microspheres are prepared from the following raw materials: luteolin 1%-1.5% (w / v), olive oil 18%-20% (w / v), emulsifier 10%-12% (w / v), co-emulsifier 10%~12% (w / v), sodium alginate 1%~2.5% (w / v), chitosan 0.2%~0.3% (w / v), chloride Calcium 4%-8% (w / v), cross-linking agent 0.5%-1% (v / v). The slow-release algae-inhibiting microspheres provided by the present invention can slow down and control the release rate of luteolin, and the preparation process is simple, the cost is low, and there is no pollution to the environment. Through the sustained and slow release of luteolin, it can significantly It effectively inhibits the growth of Microcystis and at the same time effectively inhibits the release of microcystins (MCs), without the need to repeatedly add algicides, and has a long-term and stable effect on effectively inhibiting the outbreak of cyanobacteria blooms.

Description

technical field [0001] The invention relates to the technical field of water environment protection, in particular to a slow-release algae-inhibiting microsphere and a preparation method and application thereof. Background technique [0002] In recent years, cyanobacterial blooms have occurred frequently in many large lakes and reservoirs. Microcystis is the dominant species for blooms, which can damage aquatic ecosystems by blocking sunlight and consuming oxygen. Microcystis usually produces and releases algal toxins to further pollute water bodies, poisoning aquatic organisms and humans, among which microcystins (MCs) are the most representative. The World Health Organization recommends that the content of MCs in drinking water be set at 1 μg / L, so controlling the growth of harmful algae and reducing the release of MCs has become a widespread concern. [0003] The management of harmful algae can be divided into physical, chemical and biological methods. However, water tr...

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Problems solved by technology

[0004] The algae inhibitor slow-release technology uses physical and chemical means to store effective algae-inhibiting ingredients in continuous-release microspheres (continuous-release microspheres, CRM), and then release them slowly and continuously. The preparation of existing CRM and its anti-algae The effect has the following disadvantages: the production process is complicated and the production cost is high; the effect of inhibiting algae growth cannot be achieved for a long time and stable, and the effect needs to be further strengthened; while inhibiting the growth of algae, it lacks a long-term and high-efficiency inhibitory effect on the release of microcystin MCs; There is no report on the effect of CRM on inhibiting algae and inhibiting MCs under different environmental conditions

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