Water plankton biology regulating agent and its method for controlling water blue-green algae over propogation

An over-breeding and regulator technology, applied in plant growth regulators, biocides, botanical equipment and methods, etc., can solve problems such as certain hazards to aquatic animals, difficulty in project implementation and management, and reduction of cyanobacteria density, etc., to achieve Improve the transparency of water bodies, increase the diversity of algae, and improve the effect of landscape effects

Inactive Publication Date: 2005-03-02
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • 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, an

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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PUM

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Abstract

The ecological water plankton regulating agent consists of gypsum powder 30-40 wt%, attapulgite powder 20-40 wt% and sodium humate 30-40 wt%. The method of utilizing the ecological water plankton regulating agent in controlling excessive propagation of blue-green algae in water is to dilute the ecological water plankton regulating agent with 10-20 times water to obtain suspension and spreading the suspension to the water, with the applied amount of the ecological water plankton regulating agent being 3-10 g/cu m. The said regulating agent and method can control the excessive propagation of blue-green algae, ensure the algae diversity, raise the transparency of water and lower the content of microcystin in water.

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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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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