Method for controlling blue algae

A cyanobacteria, shading film technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of weakening self-purification function, high cost, destroying biological population structure and ecological environment, etc. , to achieve the effect of efficient and long-term governance, easy to popularize and apply, and improve governance efficiency

Active Publication Date: 2018-01-26
姚竣耀
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, large-scale dredging will destroy the original biological population structure and ecological environment of rivers, lakes and reservoirs, weaken their self-purification function, and have a negative effect on ecological restoration; while manual salvage is low in efficiency and high in cost; high-voltage discharge and ultrasonic treatment There are certain limitations, and it is only suitable for small and medium-scale algae removal in water plants, and cannot solve the problems of eutrophication and algae pollution in rivers and lakes
[0005] The single biological method has no secondary pollution to the treatment of cyanobacteria, and can degrade pollutants, which has a synergistic effect on ecological restoration, but the treatment efficiency and effect of cyanobacteria will be affected after a large-scale outbreak

Method used

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  • Method for controlling blue algae
  • Method for controlling blue algae

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] From May to October, the test site is a certain river in Jiangsu. The average river width of the test site is about 80-100m, and the average water depth is 3-4m. The water treatment volume of the project is about 5×10 5 m³, the concentration of chlorophyll a in the water area before treatment was 0.0150mg / L. (The method for detecting the concentration of chlorophyll a in the examples is the spectrophotometric method, for details, please refer to "Technical Guidelines for Formulation and Revision of National Environmental Pollutant Monitoring Method Standards (HJ168-2010)").

[0041] In-situ enrichment and treatment of cyanobacteria is carried out by using the composite technology of covering shading film combined with biological enzymes and microbial agents to treat cyanobacteria with shading film / biological enzymes / microbial agents / light source. The treatment process flow chart is as follows figure 1 Shown:

[0042] 1. If figure 2 As shown, the river is divided into...

Embodiment 2

[0053] From May to October, the test site is a lake bay in Nanjing, Jiangsu Province. The test area is about 80m×80m, the average water depth is 5-8m, and the concentration of chlorophyll a in the water area before treatment is 0.0100mg / L.

[0054] In-situ enrichment and treatment of cyanobacteria using the composite technology of covering shading film combined with biological enzymes and microbial agents to treat cyanobacteria: covering shading film / biological enzymes / microbial agents / light source:

[0055] 1) Divide the river into a shading area and an open area covered with shading film. The area ratio of the two areas is 8:1 in turn; the area of ​​the treatment area is 6400㎡.

[0056] Install three layers of shading film at a distance of 20cm from the surface of the water body in the shading area. The two ends of the shading film are fixed on both sides of the lake bay. The shading film is made of acrylic fiber. The air and water holes on the shading film have a pore size o...

Embodiment 3

[0063] From May to October, the test site is a river in Zhenjiang, Jiangsu Province. The average river width of the test site is about 25-30m, and the average water depth is 5-6m. The water treatment volume of the project is about 5.4×10 5 m³, the concentration of chlorophyll a in the water area before treatment was 0.0200mg / L.

[0064] In-situ enrichment and treatment of cyanobacteria using the composite technology of covering shading film combined with biological enzymes and microbial agents to treat cyanobacteria: covering shading film / biological enzymes / microbial agents / light source:

[0065] 1) Divide the river into a shading area and an open area covered with shading film. The area ratio of the two areas is 6:1 in turn; the area of ​​the treatment area is 3000㎡.

[0066] Install two layers of shading film in the shading area of ​​the river bend. The shading film is made of polyester. The air and water hole diameter on the shading film is 5cm, and the hole density is 500 / ...

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Abstract

The invention discloses a covering shading film/enzyme/microbial agent/light source compound technique used for controlling blue algae in the manner of covering a shading film and combining with biological enzyme and microbial agent on the water surface of river, lake and reservoir. According to the invention, for the characteristic of the photosynthesis required by the growth of the blue algae, alight-shading technology for locally opening the covering shading film is adopted, namely, at least two shading films with air and water holes cover on the water surface at an interval, the photosynthesis of the blue algae is stopped in a large area, and meanwhile, the sunlight or manual light source supplementing is utilized to enrich and treat the blue algae on the locally opening water surfacecovered with the shading film; for the eutrophication environment required by the growth of the blue algae, the microbial agent is adopted for decomposing, absorbing and converting the eutrophicationmatters so as to change the eutrophication state of water; the biological enzyme is utilized to break the protein of the blue algae, so as to achieve the effect of killing and restraining the growthof the blue algae; the biological enzyme and the microbial agent are utilized to crack, decompose and absorb the algal toxin after the death of the blue algae.

Description

technical field [0001] The present invention relates to the field of water environment, in particular to a method for treating cyanobacteria based on light, combined with the compound technology of cyanobacteria treatment covering shading film / biological enzyme / microbial agent / light source to gather algae / salvage or kill, used for rivers, lakes and Cyanobacteria management in reservoir water. Background technique [0002] With the development of social economy and the increase of population, the problem of water environment pollution is becoming more and more serious. At present, there are a certain degree of blue-green algae in rivers, lakes and reservoirs in our country, and the accumulation and outbreak of blue-green algae will affect environmental safety, reduce the quality of water resources, and endanger aquatic products. Aquaculture and secondary pollution of water bodies change the community structure of rivers and lakes and reduce species diversity. In addition, alg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 谢悦波姚竣耀
Owner 姚竣耀
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