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Method for controlling water bloom of blue algae

A technology for cyanobacteria blooms and water blooms, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Thoroughly cure algal blooms, the method is easy to implement, and the effect of improving water quality

Inactive Publication Date: 2005-01-12
INST OF AQUATIC LIFE ACAD SINICA
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  • Description
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AI Technical Summary

Problems solved by technology

Although there are many treatment methods, they only solve the problem on the surface, and they do not solve the problem at the root of the cyanobacteria bloom.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A method for controlling cyanobacteria blooms is specifically implemented as follows:

[0015] 1. Stock filter-feeding silver carp, bighead carp, carp, and crucian carp in areas where algae blooms occur. They feed on algae and reduce the number of algae, thereby reducing the productivity of cyanobacteria and controlling algae. at 6.1km 2 220 tons of filter-feeding fish were stocked in the experimental area. Due to fish growth, disease and human factors, the stocking density of fish will change, so it is required to conduct regular surveys on fish, catch or replenish them, so that the stocking density can be maintained. at the same level.

[0016] 2. Zooplankton feed on small algae, which can also reduce the number of algae. In the laboratory, a large number of zooplankton rotifers, fleas and daphnia, which are common in the water body of the test area, were cultivated, and then put into the area where the algal blooms broke out to play a part in controlling algae.

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PUM

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Abstract

At first, breeding filter feed silver carp, carp and crucian carp in area of water bloom breakout to control algae growing; pelagian eats small algae to reduce quantity of the algae; spiral shell and clam can moves carrying roes toincrease fish spreading area; cyanophage, dissolved algae bacteria and other microbe eating algae are separated and purified from natural water, which is cultured to large quantities in laboratory then to be put in blue algae water bloom breakout orea to control algae; resumption of water plant in water bloom breakout area can control algae growing. Last is getting rid of algae by machine including fixed blue adgae water bloom removing machine and mobile blue adgae water bloom removing machine.

Description

technical field [0001] The invention relates to the field of biological and environmental ecological engineering, and more specifically relates to a method for controlling water bloom cyanobacteria. Background technique [0002] Eutrophication of water body is a worldwide environmental problem, and the situation of eutrophication of fresh water body in my country is very serious. The eutrophication of the water body leads to abnormal reproduction of algae, especially cyanobacteria, the decrease of water transparency and dissolved oxygen, and the deterioration of water quality; in eutrophic lakes, the community and population structure of aquatic organisms will change. Eutrophication has caused serious harm to aquaculture, genetic variation of aquatic organisms, agricultural irrigation and landscape tourism. [0003] At present, there are many eutrophic lakes in my country, such as Taihu Lake in Wuxi, Jiangsu, Chaohu Lake in Hefei, Anhui, Dianchi Lake...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 刘永定沈银武肖邦定刘剑彤宋立荣邢伟
Owner INST OF AQUATIC LIFE ACAD SINICA
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