Silver carp, bighead carp, cladophora oligoclona and daphnia hyaline cooperated algae control method

A technique for bristle algae and silver carp, which is applied in the field of water treatment, can solve the problems of the influence of conventional treatment processes, decreased water transparency, and high production costs, and can solve the influence of conventional treatment processes, reduce the content of algae and the level of nutrition, and has low cost. Effect

Inactive Publication Date: 2009-02-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the transparency of the water body decreases and the water quality deteriorates due to the excessive growth of algae in the water, and it is especially suitable for solving the problem that the eutrophication and high algae raw water of the current waterworks affects the conventional treatment process and the production cost is high. Provide a method for synergistic algae control of silver carp, bighead carp, Cladophora and hyaline flea

Method used

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific embodiment one: the step of controlling algae in the present embodiment is as follows: put silver carp and bighead carp in a suitable place to breed in the eutrophic water body and construct floating net cage; The nylon wire net in the floating net cage is attached with Cladophora, grows in the floating net cage. There are transparent daphnia.

specific Embodiment approach 2

[0010] Specific implementation mode two: the stocking density of silver carp in the eutrophic water body of this implementation mode is 60~100g / m 3 , The feeding ratio of silver carp and bighead carp is 3:1~4:1, and the single tail weight of silver carp and bighead carp is 60~200g. Others are the same as in the first embodiment.

[0011] A large number of experiments have proved that stocking silver carp and bighead carp according to this data can effectively reduce the content of nutrients such as nitrogen and phosphorus in the water body, and the high-algae period has a more significant removal effect on cyanobacteria. The polyculture of silver carp and bighead carp can make comprehensive use of the difference in feeding habits of silver carp and bighead carp, so that the phytoplankton, zooplankton and debris in the eutrophic water body can be fully filtered and transformed, so that the nutrients in the water body It can be converted into fish organisms to achieve the purpo...

specific Embodiment approach 3

[0012] Specific embodiment three: in this embodiment, the stocking density of silver carp is 65~90g / m 3 . Others are the same as in the second embodiment.

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Abstract

The invention discloses a synergetic control-algae method of silver carp, variegated carp, Cladophora and transparent algae involving water disposal method, which comprises the following steps: raising silver carp and variegated carp in eutrophication water body; constructing floating net cage; attached growing Cladophora on the nylon twine web of floating net cage; placing transparent algae in floating net cage. This invention resolve the water quality deteriorate problem because overgrowth of algae. The average clearance of phosphoric is at 70-73% with algae at 73.5-75.5%, oligon at 67.5-70.5%.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a method for synergistically controlling the content of algae in eutrophic raw water of water plants by utilizing various freshwater aquatic organisms, which is suitable for eutrophic and high-algae raw water of water plants. Background technique [0002] Eutrophication of water body is a water body effect caused by excessive input of nutrients such as nitrogen and phosphorus. It is mainly manifested in the excessive growth of algae in water, accompanied by a series of changes in water quality and water ecology, resulting in a decrease in water transparency and deterioration of water quality. High algae raw water greatly affects the normal production of waterworks. [0003] In recent years, more and more attention has been paid to biological control algae removal methods because they are economical and have no by-products, and more and more types of organisms are used. The basic princi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00C02F3/00C02F3/32
CPCY02A40/81
Inventor 崔福义范振强马华何文杰阴沛军王振江贾柏樱
Owner HARBIN INST OF TECH
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