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Water plankton ecology regulating agent and its method for controlling water blue-green algae over propagation

A technology of over-breeding and regulators, applied in plant growth regulators, biocides, botanical equipment and methods, etc., can solve problems such as difficult project implementation and management, certain harm to aquatic animals, and reduction of cyanobacteria density, etc. The effect of increasing algal diversity, improving water clarity, and reducing algal density

Inactive Publication Date: 2005-12-21
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical algae removal method is to add algicide in the water body. This method has immediate effect, but it is difficult to cure the root cause, and the secondary pollution is serious; "Algaecide" is used to eliminate algae such as blue-green algae in rivers, lakes, and ponds. This algaecide uses polyaluminum chloride and zeolite powder for flocculation and adsorption to remove algae. Aluminum itself has certain hazards to aquatic animals, and it is only a simple algae removal, removing cyanobacteria and other algae together, which is not good for the algae ecological structure of the water body; the microbial method is to add beneficial microbial agents (such as photosynthetic bacteria preparations, etc.), and cyanobacteria Competing for nutrients and reducing the density of blue-green algae, this method is an environmentally friendly treatment method, without secondary pollution, but the effect is unstable, and it is usually difficult for exogenous microorganisms to grow and reproduce better; the physical method is to install water pumps, aerators, etc. means to increase water flow and reduce algae reproduction. This method is usually only an auxiliary measure with high energy consumption; the main technical means of ecological management methods is to build aquatic plants, aquatic animals, and water micro-ecological systems to form better aquatic ecosystems. The biological chain makes the nutrient salt have a virtuous cycle, maintains a low nutrient salt concentration in the water body, and finally achieves the purpose of avoiding the excessive reproduction of blue-green algae. The ecological management method is an ideal blue-green algae treatment plan for large-scale water bodies, but it is limited by the site and funds. Restricted small polluted water bodies, engineering implementation and management are more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The water body planktonic eco-regulator has the following components by weight percentage: 40% of sodium humate, 30% of gypsum powder, and 30% of attapulgite powder. The experiment was carried out in a pond with an area of ​​about 800 square meters and a water depth of about 2 meters. The total number of algae in the water before the experiment was 4.98×10 8 pcs / L (in which blue-green algae content is 4.22×10 8 per liter), the microcystin content is 102.2 ng / liter, and the water transparency is 10 cm. The temperature during the experiment was 21-32°C. On the first day of the experiment, 10 kilograms of the water body planktonic ecological regulator was evenly sprinkled in the pond (the water body planktonic ecological regulator was adjusted to a uniform suspension with 10 times of water), and the total algae content in the water was 4.65 × 10 on the 7th day. 7 pcs / L (in which blue-green algae content is 2.65×10 7 per liter), the microcystin content was 42.5 ng / liter,...

Embodiment 2

[0017] The water body planktonic eco-regulator has the following components by weight percentage: 30% of sodium humate, 30% of gypsum powder, and 40% of attapulgite powder. The test was carried out in a park lake with an area of ​​about 11,000 square meters and a water depth of 1.5 to 2 meters. The total algae content in the water before the test was 8.9×10 7 pcs / L (in which blue-green algae content is 6.1×10 7 per liter), the microcystin content was 24.5 ng / liter, and the water transparency was 30 cm; the temperature during the test was 24-35°C. On the first day of the test, 100 kilograms of water body planktonic ecological regulators were evenly sprinkled in the park lake (the water body planktonic ecological regulators were adjusted into a uniform suspension with 20 times of water), and the total algae content in the water was 1.1 × 10 on the 15th day. 7 pcs / L (in which blue-green algae content is 2.9×10 6 1 / liter), the microcystin content is 14.6 nanograms / liter, and the...

Embodiment 3

[0019] The water body planktonic eco-regulator has the following components by weight percentage: 30% of sodium humate, 40% of gypsum powder, and 30% of attapulgite powder. The test was carried out in an urban landscape river channel with a length of 700 meters, a width of 15-30 meters, an area of ​​about 13,000 square meters, and a water depth of about 1-1.5 meters (the water flow in this river section is very slow, and the water exchange volume is very small). The total algae content in the former water is 6.9×10 7 pcs / L (in which blue-green algae content is 4.9×10 7 per liter), the microcystin content was 27.3 ng / liter, and the water transparency was 35 cm; the temperature during the test was 24-35°C. On the first day of the test, 100 kg of water body phytoplankton ecological regulator was evenly sprinkled in the park lake (the water body phytoplankton ecological regulator was adjusted into a uniform suspension with 20 times of water), and the total algae content in the wa...

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Abstract

The invention provides a water body planktonic ecological regulator and a method for using it to control the excessive reproduction of cyanobacteria in the water body. The weight percentages of the formula components of the water body planktonic ecological regulator are: 30%-40% of gypsum powder, 20%-40% of attapulgite powder %, sodium humate 30% to 40%. The method of applying the planktonic ecological regulator of water body to control the overgrowth of cyanobacteria in water body is to adjust said planktonic ecological regulator of water body into a suspension with 10 to 20 times of water, stir evenly, and sprinkle it on the water body where cyanobacteria overgrowth, every The application rate is 3-10 grams of water body planktonic ecological regulator per cubic meter of water body. By using the regulator and the use method of the invention, the excessive reproduction of cyanobacteria in the water body can be controlled, the diversity of the algae can be increased, the transparency of the water body can be improved, and the microcystin content in the water body can be reduced.

Description

technical field [0001] The invention relates to a planktonic eco-regulator mainly used for controlling lakes, rivers and ponds, which is an over-breeding blue-green algae, and an application method thereof. Background technique [0002] In urban lakes and rivers, blue-green algae overgrowth is a common environmental problem. In high-density aquaculture pond water, the phenomenon of cyanobacteria overgrowth often occurs. The overgrowth of cyanobacteria in the water body not only affects the landscape, but also seriously affects the function of the water body. The overgrowth of cyanobacteria in the aquaculture water body will directly endanger the aquaculture production. The overgrowth of cyanobacteria is mainly caused by the excessive concentration and improper proportion of nutrients in the water body, which are induced in high temperature weather. Controlling the overgrowth of cyanobacteria is an important issue in water environment protection. The technologies currently...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/06C02F1/68
Inventor 陈繁忠盛国英傅家谟徐文新
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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