Straw filtering method for treating blue-green algae and special device

Abstract

The invention discloses a straw filtering method for treating blue-green alga. Straw is used as a filtering layer, and water containing blue-green algae is filtered through the straw layer, so that blue-green alga can be filtered; the straw filtering blue-green algae is dried in the sun and carbonized into biological carbon used as a biological filtering layer, and the water passing through the straw layer is filtered through the biological filtering layer, so that algal poison can be adsorbed. The invention also discloses a special device, which comprises a double-layered filter, a water outlet tube and an electric heating wire heating carbonization furnace; the double-layered filter comprises an upper straw filtering layer and a lower biological carbon filtering layer; the water outlet tube is connected with a water pump, and is used for pouring pumped blue-green alga-polluted water on the double-layered filter; and the electric heating wire heating carbonization furnace is used for carbonizing the straw which finishes filtering blue-green algae into biological carbon. The consumed energy is clean solar energy, the straw does not need to be burnt in the field during harvest time, the blue-green alga problem of lake water is solved as well, moreover, the straw also can be processed into usable biological carbon coal, and thereby certain economic benefit is achieved.

Description

technical field [0001] The invention relates to a blue-green algae water treatment method and solar energy application, in particular to a straw filtering method and a special device for treating blue-green algae. Background technique [0002] With the improvement of living standards, a lot of domestic sewage and chemical fertilizers in the fields flow directly into the river due to rainwater erosion, and the river flows into the lake or the sea, making the lake or the surrounding area of ​​the ocean eutrophic, which leads to the growth of a lot of algae, which is harmful The biggest one is cyanobacteria, especially in summer, when a large number of cyanobacteria multiply and form a layer of blue-green and fishy-smelling floating foam on the water surface, which is called "water bloom". Large-scale cyanobacteria outbreaks are called "green tides". ". Green tides cause water quality to deteriorate, and in severe cases deplete the oxygen in the water and cause the death of fi...

AI Technical Summary

Problems solved by technology

[0005] There is also a method of directly collecting cyanobacteria, but this method is very energy-intensive and labor-intensive, and cannot collect algae toxins (MC)

The filter used is a special filter. This kind of filter is easy to clog due to the excess of blue-green algae. The filter needs to be removed and cleaned, which is inconvenient and expensive to replace.

Timeliness is not high

[0006] There is also a method of using ultraviolet rays to directly kill cyanobacteria in water, but the efficiency of this method is very low

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