Biological algae control technology and application thereof in treating blue-green algae of Lake Tai

A biological and technical technology, applied in biological algae control technology and its application in cyanobacteria management, to achieve the effect of obvious effect, control of algae outbreak in Taihu Lake, and control of secondary pollution

Inactive Publication Date: 2010-06-09
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the technical problems of controlling Taihu Lake blue-green algae in the prior art, and to provide a biological algae control technology and its application in Taihu Lake blue-green algae treatment

Method used

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  • Biological algae control technology and application thereof in treating blue-green algae of Lake Tai

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specific Embodiment approach

[0021] By setting up floating-valve cages in the lake area where cyanobacteria frequently occurs, stocking tilapia with a certain density in the cage, and using the tilapia to directly feed on cyanobacteria, effective biological control of cyanobacteria in the water body, and control of cyanobacteria in the lake area Excessive growth, inhibiting the outbreak of cyanobacteria blooms. Through the method of tilapia feeding on cyanobacteria, the nitrogen and phosphorus enriched in the water body can be effectively removed, so as to achieve the purpose of removing pollution and purifying water quality. The specific implementation is as follows:

[0022] 1. Manufacture of floating valve net cage:

[0023] The net is made of polyethylene net rope, the box is made of polyethylene netting, the frame is made of double rows of moso bamboo wire twisted, and the floating part is a circular plastic foam. Net cage specification network port (2×3)m 2 or (3×4)m 2 , Cage depth 2m ~ 2.5m. M...

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Abstract

The invention discloses biological algae control technology and application thereof in treating blue-green algae of the Lake Tai. The technology comprises the following steps: culturing oreochromis nilotica in a region with the blue-green algae, performing effective biological control on the blue-green algae in a water body, controlling overgrowth of the blue-green algae in the water body and inhibiting the explosion of cyanobacterial bloom by using the oreochromis nilotica to directly eat the blue-green algae, and effectively remove enriched nitrogen and phosphorus in the water body to achieve the aim of removing pollutant and purifying water quality by using the oreochromis nilotica to eat the blue-green algae. Through the technology, the explosion of blue-green high-risk region of local part of the Lake Tai can be effectively inhibited, and income increase of local fishermen and farmers is promoted. The technology and the application overcome the defects of the conventional physical, chemical and biological blue-green algae prevention and control, not only avoid pollution and biological risk, but also realize biological control on the blue-green algae.

Description

technical field [0001] The invention relates to a biological control technology and its application in the field of environmental management, in particular to a biological algae control technology and its application in blue-green algae control. Background technique [0002] Taihu Lake is the third largest freshwater lake in my country. It has multiple functions such as water supply, flood control, breeding, irrigation, shipping and tourism. In recent decades, with the rapid growth of population and the rapid development of social economy in the Taihu Lake Basin, industrial and agricultural wastewater and domestic sewage have made the eutrophication of Taihu Lake more and more serious, causing the water quality of Taihu Lake to be seriously polluted and the eutrophication situation to continue. Intensified, the number of phytoplankton has increased dramatically, and blue-green algae outbreaks have occurred from time to time, which has seriously endangered the sustainable dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
Inventor 周军李旭光周刚林海
Owner FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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