Composite microbial preparation for inhibiting and killing blue-green algae and preparation method thereof

Abstract

The invention relates to the field of water pollution treatment, in particular to a composite microbial preparation for inhibiting and killing blue-green algae and a preparation method thereof. The composite microbial preparation comprises a complex microbial inoculant, a composite carrier and deionized water, the mass ratio of the complex microbial inoculant to the composite carrier to the deionized water is (3-7): (60-80): (200-400), the complex microbial inoculant comprises algicidal bacteria, photosynthetic bacteria, actinomycetes, saccharomycetes and lactic acid bacteria, and the effective viable count ratio of the algicidal bacteria to the photosynthetic bacteria to the actinomycetes to the saccharomycetes to the lactic acid bacteria is (2-3): (1-2): (2-3): (5-7): (3-4). The composite carrier comprises amino acid, protease, lipase and cellulase, and the mass ratio of the amino acid to the protease to the lipase to the cellulase is (2-3): (0.5-0.8): (0.7-1): (0.3-0.5). The composite microbial preparation can remove 100% of blue-green algae within 4 days, the time for removing the blue-green algae is shorter, the efficiency is higher, the self-cleaning capacity of a water body is improved, and the growth of aquatic organisms is promoted.

Description

technical field [0001] The invention relates to the field of water pollution control, in particular to a compound microbial preparation for inhibiting and killing cyanobacteria and a preparation method thereof. Background technique [0002] The eutrophication of the water body causes the massive reproduction of algae, leading to frequent outbreaks of algae blooms and red tides, which not only aggravates the pollution of water bodies and the shortage of water resources, but also destroys the balance of aquatic ecosystems. A variety of algal toxins, mainly microcystins, therefore pose a serious threat to the safety of drinking water. At present, there are many physical, chemical and biological methods for controlling cyanobacteria blooms. Although chemical algicides such as heavy metal copper can kill cyanobacteria, natural flocculants such as iron or aluminum chemical flocculants and clay minerals can quickly settle cyanobacteria. However, the nitrogen and phosphorus in the ...

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Problems solved by technology

[0002]The eutrophication of the water body causes the algae to bloom in large numbers, leading to frequent outbreaks of algae blooms and red tides, which not only aggravates the pollution of the water body and the shortage of water resources, but also destroys aquatic life. Ecosystem balance, and poses a serious threat to drinking water safety due to the ability of bloom cyanobacteria to produce and release a variety of algal toxins, mainly microcystins

At present, there are many physical, chemical and biological methods for controlling cyanobacteria blooms. Although chemical algicides such as heavy metal copper can kill cyanobacteria, natural flocculants such as iron or aluminum chemical flocculants and clay minerals can quickly settle cyanobacteria. However, the nitrogen and phosphorus in the water can support the growth of cyanobacteria and cause cyanobacteria blooms again. At the same time, chemical residues will cause secondary pollution of the water body

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