Preparation method for biological agent

Abstract

The invention discloses a preparation method for a biological agent. The preparation method for the biological agent can prepare bacteria capable of degrading algal cells in eutrophic water bodies, and the method comprises four stages including enrichment culture, selective culture, bacteria screening and degradation dominant bacteria enrichment. The preparation method for the biological agent has the advantages that the operation is simple and convenient, degradation dominant bacteria are easy to obtain, and the preparation cost is low. When the eutrophic water bodies are governed, only is the biological agent needed to be put into the eutrophic water bodies, compared with a traditional way, both the preparation of the biological agent and the governance operation are simple, and the governance cost is also remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of biological bacterial agent cultivation, and more specifically, relates to a preparation method of biological bacterial agent. Background technique [0002] Eutrophication refers to the fact that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, estuaries, and bays, causing algae and other plankton to multiply rapidly, and dissolved oxygen in water bodies The amount of water has declined, the water quality has deteriorated, and fish and other organisms have died in large numbers. [0003] The impact of eutrophication on the environment is mainly reflected in: [0004] (1) Algae overgrowth in eutrophic water body makes water produce musty and foul smell, which reduces the quality of water. [0005] (2) A large number of blue and green algae that grow and reproduce in eutrophic water body...

AI Technical Summary

Problems solved by technology

[0004] (1) The excessive growth of algae in the eutrophic water body causes the water to produce musty and foul odors, reducing the quality of the water

[0005] (2) A large number of blue and green algae that grow and reproduce in eutrophic water bodies form a layer of green scum on the surface of the water body, making the water quality turbid and the transparency significantly reduced

At the same time, the decay and decomposition of algae after death accelerates the consumption rate of dissolved oxygen in the water body, and the lack of oxygen in the water body becomes inevitable.

[0007] (4) Many algae in eutrophic water can secrete and release toxic and harmful substances, which will reduce the quality of water

[0008] (5) The normal ecological balance of the eutrophic water body is disturbed, and the biological population fluctuates violently, resulting in a decrease in the stability and diversity of aquatic organisms and destroying the ecological balance of the water body

[0009] (6) Excessive algae in eutrophic water will block the filter, and at the same time, due to the metabolism of algae and the toxic and harmful substances produced by the algae itself, the technical difficulty of water treatment is increased, and the cost of water production is increased.

However, in the process of implementing the above three methods, a large number of operations are required, and a large amount of time and financial resources are consumed to achieve the purpose of water body governance, which has the disadvantages of complicated and cumbersome operations and high governance costs.

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