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Carbon-based catalyst-based blue algae microwave treatment method

A technology of carbon-based catalysts and carbon catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as high cost, large drug consumption, and large energy consumption, and achieve fast and efficient The effect of simple and easy processing and method and abundant resources

Inactive Publication Date: 2011-02-16
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method is to remove algae mechanically, such as dredging method, pulling net to catch algae, or adding clay flocculation and sedimentation agent, etc. The cost is high and the energy consumption is relatively large; the biological method is to use biological bacteria or put special water animals such as silver carp Algae removal of fish, algae-eating insects, microbial agents, etc.; in the chemical method, chemical agents are mainly used to kill algae. Commonly used chemical agents include copper sulfate, chlorine dioxide, etc., and ozone and potassium permanganate have also been studied as algaecides , this method can efficiently and timely control the reproduction of cyanobacteria, but the negative impact of chemical agents on the water body ecology is extremely serious. The method is an expedient measure. After using the algaecide, the dead algae still remain in the water body, the nutrients cannot be removed from the water body, and the cyanobacteria will still breed new cyanobacteria, so it must be continuously and intermittently filled, so the consumption of medicine is large. , and time-consuming and labor-intensive, the excess chemicals will cause secondary pollution of the water body

Method used

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  • Carbon-based catalyst-based blue algae microwave treatment method
  • Carbon-based catalyst-based blue algae microwave treatment method
  • Carbon-based catalyst-based blue algae microwave treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Carbon material pretreatment: wash activated carbon, carbon black or carbon fiber with deionized water for more than 3 times, soak overnight in hydrochloric acid aqueous solution with a mass concentration of 8% to 10%, then wash with distilled water for more than 3 times, boil in distilled water, and then Rinse repeatedly with distilled water until neutral and then dry to obtain pretreated carbon material activated carbon, carbon black or carbon fiber;

[0026] Soak the pretreated carbon material in 0.1g / L Fe 3+ (FeCl 3 ) solution, taken out, and dried to obtain a metal ion-modified carbon catalyst; 50 mL of blue-green algae was added to a 100 mL round-bottomed flask, and 1 g of the above-mentioned carbon catalyst was added for microwave reaction. The microwave conditions are: 80°C, 400W. The cyanobacteria became clear within 3 minutes.

Embodiment 2

[0028] Carbon material pretreatment is the same as embodiment 1;

[0029] Soak the pretreated carbon material in 0.2g / L Al 3+ solution, taken out, and dried to obtain a metal ion-modified carbon catalyst; take 50 mL of blue-green algae and add it to a 100 mL round-bottomed flask, and add 1 g of the above-mentioned carbon catalyst to carry out microwave reaction. The microwave conditions are: 80°C, 400W. The cyanobacteria became clear within 3 minutes.

Embodiment 3

[0031] Carbon material pretreatment is the same as embodiment 1;

[0032] Soak the pretreated carbon material in 0.1g / L Cu 2+ solution, taken out, and dried to obtain a metal ion-modified carbon catalyst; take 50 mL of blue-green algae and add it to a 100 mL round-bottomed flask, and add 1 g of the above-mentioned carbon catalyst to carry out microwave reaction. The microwave conditions are: 80°C, 400W. The cyanobacteria became clear within 3 minutes.

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Abstract

The invention provides a carbon-based catalyst-based blue algae microwave treatment method. The method is characterized in that: metal ion modified active carbon, carbon black or carbon fiber, namely a carbon catalyst is added into a microwave reaction system, and efficient killing of blue algae can be realized in extremely short time. The method is simple and feasible, the catalyst raw material is cheap and easily obtained, the blue algae treatment effect is very remarkable, and secondary pollution is not produced to the water body.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a microwave treatment method for cyanobacteria based on a carbon-based catalyst. Background technique [0002] Cyanobacteria, also known as cyanobacteria, is one of the oldest existing plant groups on the earth. It is a kind of broad-spectrum algae. It can survive in the hot springs at 85°C, in the ice and snow of the mountains, in the ocean and fresh water, and The reproduction speed is very fast, and it can form a layer of tens of centimeters thick blue-green floating foam with a fishy smell on the water surface, which is called "water bloom". During the aging period of the water bloom, it can exhaust the dissolved oxygen in the water, causing fish Humans and aquatic animals suffocate to death. Some species (such as Microcystis) also produce toxins (microcystins). Algal toxins are not only directly toxic to fish, humans and animals, but also an important cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B01J19/12B01J21/18
Inventor 张礼知李朋娜
Owner HUAZHONG NORMAL UNIV