Method for treating blue-green algae in rivers, lakes and reservoirs

A lake and reservoir technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of destroying biological population structure and ecological environment, negative effects of ecological restoration, and high cost, To achieve the effect of inhibiting the growth of cyanobacteria

Active Publication Date: 2018-01-12
姚竣耀
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • 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; manual salvage is inefficient and expensive
[0006] The single biological

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating blue-green algae in rivers, lakes and reservoirs
  • Method for treating blue-green algae in rivers, lakes and reservoirs

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] From May to October, the test site was a reservoir in Jinhua, Zhejiang, with a storage capacity of 1055m³, and the chlorophyll a concentration in the water before treatment was 0.0071mg / L.

[0039] The blue algae treatment process in this embodiment is as follows figure 1 Shown:

[0040] 1) Cover two layers of shading film in the local cyanobacteria-enriched area of ​​the water. The material of the shading film is PVC. The two ends of the shading film are fixed on the river bank, and the structure is like figure 2 As shown, the area covering the shading film is about 1000 square meters.

[0041] The upper shading film 1 and the lower shading film 2 are fixed on the river bank slope protection 4 by a fixing device 3 (anchor cable). The distance between the shading film and the water surface is 50cm, and the river base 6 and the river bed 7 are below the water surface; both shading films are provided with a through The pores of air and water 5, the pore size ...

Example Embodiment

[0049] Example 2

[0050] From May to October, the test site was a lake bay in Nanjing, Jiangsu. The test area was about 80m×80m, and the average water depth was 5-8m. The chlorophyll a concentration in the water before treatment was 0.0100mg / L.

[0051] Using a covering shading film combined with biological enzymes and microbial inoculants to treat cyanobacteria, a composite technology of covering shading film / biological enzymes / microbial inoculants for in-situ enrichment treatment of cyanobacteria:

[0052] 1) Install three layers of shading film in the test area, the shading film is made of acrylic fiber, the pore size of the air and water holes on the shading film is about 3cm, and the hole density is about 800 / m 2 , The air and water holes of the upper and lower shading films are staggered, and the distance between the shading film and the water surface is 20cm.

[0053] 2) After the water surface is covered with a light-shielding film, inoculate microbial agents and biological en...

Example Embodiment

[0056] Example 3

[0057] From May to October, the test site was a river in Zhenjiang, Jiangsu. The average river width of the test site was about 35-45m, and the average water depth was 5-6m. The water volume of the project was about 6.0×10 5 m³, the concentration of chlorophyll a in the water before treatment was 0.0200mg / L.

[0058] Using a covering shading film combined with biological enzymes and microbial inoculants to treat cyanobacteria, a composite technology of covering shading film / biological enzymes / microbial inoculants for in-situ enrichment treatment of cyanobacteria:

[0059] 1) Install two layers of shading film at the river bay. The shading film is made of polyester. The pore size of the air and water holes on the shading film is about 5cm, and the hole density is about 500 / m. 2 , The air and water holes of the upper and lower shading films are staggered, and the distance between the shading film and the water surface is 35cm; the area covering the shading film is 300...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a covered light-shading film/enzyme/microbial inoculant combined technique for treating blue-green algae in rivers, lakes and reservoirs by combining water surface covered light-shading films with a biological enzyme and a microbial inoculant. According to the characteristic that photosynthesis is needed by the growth of the blue-green algae, a light-shading technique of the covered light-shielding film is adopted for blocking the photosynthesis of the blue-green algae by completely or partially covering the rivers, lakes and reservoirs to be treated respectively by using the two or more layers of perforated light-shading films; furthermore, the microbial inoculant is used for decomposing, absorbing and converting eutrophic substances according to the eutrophicationenvironment needed by the growth of the blue-green algae, thus changing the eutrophication state; the biological enzyme is used for destroying the protein of blue-green algae living bodies, thus achieving the effects of killing the blue-green algae and inhibiting the growth of the blue-green algae; the biological enzyme and the microbial inoculant are used for cracking, decomposing and absorbingalgal toxin produced after the death of the blue-green algae. The technique provided by the invention is safe and efficient, and has remarkable social and economic benefits.

Description

technical field [0001] The invention relates to the field of water environment treatment, in particular to a composite technology for covering the water surface of rivers, lakes and reservoirs with a shading film combined with microbial agents and biological enzymes to control blue-green algae. Background technique [0002] With the development of social economy and the increase of population, the problem of water environment pollution in our country is becoming more and more serious. At present, there is a certain degree of cyanobacteria accumulation in rivers, lakes and reservoirs in our country, and the outbreak of cyanobacteria will cause the following hazards: 1) affect the safety of drinking water; 2) affect the safety of the environment and reduce the quality of water resources; 3) endanger the aquaculture industry; 4) Cause secondary pollution of water bodies, change the community structure of rivers and lakes, and reduce species diversity; 5) Algal toxins are produc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F3/34
Inventor 谢悦波姚竣耀
Owner 姚竣耀
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap