Blue-green algae scavenging agent using polystyrene foam as carrier and capable of floating on water surface

Abstract

The invention relates to a blue-green algae scavenging agent using polystyrene foam as a carrier and capable of floating on water surface and a preparation method thereof. The blue-green algae scavenging agent is prepared by wrapping a titanium dioxide (TiO2) pillared montmorillonite photocatalyst on the outer surface of the polystyrene foam carrier and then drying, wherein the TiO2 pillared montmorillonite photocatalyst is prepared by adding a titanium pillared agent into sodium-based montmorillonite suspension with mass percentage concentration of 2 to 3 percent, standing and ageing, centrifugally washing and drying; the titanium pillared agent is prepared by hydrolyzing titanium tetrachloride (TiCl4) under the strong acidic condition until the solution is changed from yellow green intocolorless; and the ratio of the volume of the TiCl4 to the weight of the sodium-based montmorillonite is 0.8 to 1.2 mL / g. The blue-green algae scavenging agent using the polystyrene foam as the carrier and capable of floating on the water surface is convenient to use and easy to recycle, has quick response, low cost, no secondary pollution and high adaptability, and can be widely applied in various water areas polluted by the blue-green algae.

Description

technical field [0001] The invention relates to the field of water pollution control, in particular to a water body algae scavenger and a preparation method thereof. Background technique [0002] Cyanobacteria are algae, also known as blue-green algae. Of all algal organisms, cyanobacteria are the simplest and most primitive. The phenomenon that the ecological balance is destroyed due to the extremely bad water resource environment leading to the proliferation of cyanobacteria is called "cyanobacteria bloom". Cyanobacteria blooms can cause the death of fish and shrimp, lead to water pollution, and have a serious impact on human production and life. In addition, cyanotoxins can seriously endanger human health. In the United States, Japan, Australia, Brazil and other countries, there have been reports of fish, livestock and human poisoning deaths caused by algae toxins. The frequency of cyanobacterial blooms in many lakes in my country is high, the algal biomass is huge, a...

AI Technical Summary

Problems solved by technology

Other biological methods, such as filter-feeding fish control and algae competition, are not very effective or safe enough for large green bloom outbreaks

[0008] Application of commercial flocculants (such as polyaluminum chloride and polyferric chloride) to remove algae in natural water bodies has safety problems, such as aluminum in polyaluminum chloride can cause damage to the brain and nervous system, and the amount of flocculants is large , high cost, which also limits its use

[0009] Although there are many methods for controlling cyanobacteria, each method has its own advantages and disadvantages and cannot be widely used.

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