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A kind of algicide for emergency treatment of algae bloom and its application method

An emergency treatment and algicide technology, applied in water/sewage treatment, herbicides and algicides, water/sludge/sewage treatment, etc. Larger impact and other problems, to achieve the effect of reducing algae density, improving transparency, and less dosage

Inactive Publication Date: 2011-12-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper sulfate is the most widely used algicide, but organic flocculants cannot be degraded, clay will cause a large amount of sludge, and algicides have certain toxicity to aquatic organisms, thus limiting the application of these chemical flocculants and algicides ; Biological ecological methods include microbial technology, ecosystem restoration technology, etc. Microbial technology is greatly affected by water quality and lacks universal applicability, while ecosystem restoration technology needs to build floating plants, emergent plants, submerged plants, planktonic plants, etc. Animals and benthic animals form a food chain. This technology has good stability, but the technology has a long period of algae control and is not suitable for emergency treatment of algae blooms.

Method used

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  • A kind of algicide for emergency treatment of algae bloom and its application method
  • A kind of algicide for emergency treatment of algae bloom and its application method
  • A kind of algicide for emergency treatment of algae bloom and its application method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The processing object is a lake, the water turbidity is 100, and the algae cell concentration is 1.0×10 6 cells / mL, algae cell count was fixed with Lugol's solution, and counted under a microscope after standing for 48 hours.

[0028] Use a commercially available enclosure, select a water body of about 1 cubic meter, take 0.5g of potassium permanganate for use, and then take 0.5kg of alum and 0.5kg of calcium carbonate respectively. When applying, add in the order of potassium permanganate, calcium carbonate and alum, and sprinkle evenly in the enclosure.

[0029] Within one hour, the turbidity of the treated water was 8, and the concentration of algae cells was 1.0×10 5 per mL, the removal rate of algae cells reached 90%, and the removal rate of turbidity was 92%.

Embodiment 2

[0031] The processing object is a lake, the water turbidity is 100, and the algae cell concentration is 1.0×10 6 cells / mL, algae cell count was fixed with Lugol's solution, and counted under a microscope after standing for 48 hours.

[0032] Use a commercially available enclosure, select a water body of about 1 cubic meter, take 0.5g of potassium permanganate for use, and then take 1.0kg of alum and 0.5kg of calcium carbonate. When applying, add in the order of potassium permanganate, calcium carbonate and alum, and sprinkle evenly in the enclosure.

[0033] Within one hour, the turbidity of the treated water is 2, and the concentration of algae cells is 2.0×10 2 per mL, the removal rate of algae cells is over 99%, and the removal rate of turbidity is 98%.

Embodiment 3

[0035] The processing object is a lake, the water turbidity is 100, and the algae cell concentration is 1.0×10 6 cells / mL, algae cell count was fixed with Lugol's solution, and counted under a microscope after standing for 48 hours.

[0036] Use a commercially available enclosure, select a water body of about 1 cubic meter, take 0.5g of potassium permanganate for use, and then take 1.0kg of alum and 1.0kg of calcium carbonate respectively. When applying, add in the order of potassium permanganate, calcium carbonate and alum, and sprinkle evenly in the enclosure.

[0037] Within one hour, the turbidity of the treated water is 3, and the concentration of algae cells is 2.0×10 2 per mL, the removal rate of algae cells reached 99%, and the removal rate of turbidity was 97%.

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PUM

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Abstract

The invention discloses an algaecide for emergency treatment of algae blooms and a use method thereof, which can control the excessive proliferation of algae in urban lakes, rivers, ponds and other water bodies. The algaecide includes potassium permanganate, alum and calcium carbonate, and the mass ratio of the potassium permanganate, alum and calcium carbonate is 0.001:1-10:1-5. Add potassium permanganate, calcium carbonate and alum in the order of each application, and evenly sprinkle it on the algae bloom water body. The algaecide and the use method of the present invention can very quickly and effectively control the algae bloom in the water body, the optimal average removal rate of the turbidity of the water body exceeds 95%, and can significantly improve the transparency of the water body.

Description

technical field [0001] The invention relates to an algaecide used for emergency treatment of algal blooms and a method for using the algae to control the excessive proliferation of algae in urban lakes, rivers, ponds and other water bodies. Background technique [0002] With the aggravation of water pollution and eutrophication, large-scale algae blooms frequently occur in lakes and reservoirs in China, and algae blooms have become an important environmental problem that affects water use functions and water landscapes. Since algae blooms usually break out in a large number in a short period of time, how to quickly and effectively deal with them is an urgent water treatment issue that needs to be broken through. The technologies currently used for emergency control of algae blooms include physical methods, chemical methods, and biological ecological methods. Physical methods include various water aeration and oxygenation technologies and water circulation technologies. Thes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01P13/00C02F1/00C02F1/52
Inventor 张建英倪婉敏罗阳
Owner ZHEJIANG UNIV
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