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Magnetic composite algaecide and usage method thereof

An algaecide and magnetic technology, applied in the field of water pollution control, can solve problems such as inconvenient operation and inability to degrade algae toxins, and achieve the effects of improved transparency, good chemical stability, and large specific surface area

Inactive Publication Date: 2017-06-27
WELLE ENVIRONMENTAL GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As disclosed in CN102249369A, take pumice stone as the cyanobacteria scavenger that can float on the water surface, and the pumice stone is wrapped with TiO 2 Pillared montmorillonite photocatalyst, the agent degrades blue-green algae on the water surface through adsorption and photocatalytic coordination. It has the advantages of high efficiency of clearing blue-green algae, quick effect, and no secondary pollution. However, the collection needs to be salvaged and the operation is inconvenient.
CN103030203A discloses a compound inorganic polymer stable algaecide preparation and algae removal method, which is to graft acrylic acid on magnetic powder to form flocs, then compound with attapulgite and activated carbon, and finally mix with aluminum iron chloride and chitosan Algaecide is formed by using adsorption to absorb algae, and then using a magnet to recover the algaecide, but this technical solution only has adsorption and cannot degrade algae toxins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] ⑴. Evenly disperse 4.34g montmorillonite in 50ml of deionized water and then place it in a water bath reaction tank. 3 ·6H 2 O and 50ml 0.3mol / LFeCl 2 4H 2 Put O into the water bath reaction tank, stir quickly, the temperature of the water bath is 85°C-90°C, stir for 30min, add ammonia water with a mass fraction of 30%, control the pH value of the solution at 11, continue to react for 4h, and wash to remove unassembled magnetic The nanometer material and the adsorbent obtain a composite magnetic adsorbent in which the magnetic nanomaterial is loaded with the adsorbent. During this process, the mass ratio of montmorillonite to ferric oxide nanoparticles formed is 1:0.8.

[0025] ⑵, 11.87g of TiCl 4 Add it into 11.87ml of deionized water, stir to form a transparent sol, and then add concentrated sulfuric acid to control the pH value of the transparent sol at 1.5 to prepare a titanium dioxide precursor.

[0026] (3) Take 2g of the above-mentioned composite magnetic ad...

Embodiment 2

[0032] (1) Evenly disperse 3.475g of attapulgite in 50ml of deionized water, then place it in a water bath reaction tank, pass through nitrogen protection, and put 50ml of 0.6mol / LFeCl 3 ·6H 2 O and 50ml 0.3mol / LFeCl 2 4H 2 O was put into a water bath reaction tank, stirred rapidly, and the temperature of the water bath was 75°C-85°C. After stirring for 25 minutes, add ammonia water with a mass fraction of 30%, control the pH value of the solution at 12, continue to react for 3.5 hours, and wash to remove unassembled The magnetic nano material and the adsorbent obtain a composite magnetic adsorbent in which the magnetic nano material is loaded with the adsorbent. In this process, the mass ratio of attapulgite to the formed Fe3O4 nanoparticles is 1:1.

[0033] ⑵, the 8mmolBi (NO 3 ) 3 ·5H 2 O and 4mmolNa 2 WO 4 2H 2 O was added to 60ml of ethylene glycol solvent to prepare a transparent sol, and then the two transparent sols were mixed and stirred to obtain a bismuth t...

Embodiment 3

[0040] ⑴. Evenly disperse 4.63g of mesoporous carbon in 80ml of deionized water and then place it in a water bath reaction tank. 3 ·6H 2 O and 80ml 0.3mol / LFeCl 2 4H 2 Put O into the water bath reaction tank, stir rapidly, the temperature of the water bath is 65°C-75°C, stir for 20min, add ammonia water with a mass fraction of 30%, control the pH value of the solution at 13, continue to react for 3h, and wash to remove unassembled magnetic The nanometer material and the adsorbent obtain a composite magnetic adsorbent in which the magnetic nanomaterial is loaded with the adsorbent. In this process, the mass ratio of mesoporous carbon to the formed Fe3O4 nanoparticles is 1:1.2.

[0041] ⑵, the 8mmolBi (NO 3 ) 3 ·5H 2 O and 8mmol Fe(NO 3 ) 3 9H 2 O was added to 60ml of diethyl ether solvent to prepare a transparent sol, then the two transparent sols were mixed and stirred, and 10ml of glacial acetic acid was added to continue stirring to obtain a bismuth ferrite precurso...

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Abstract

The invention relates to a magnetic composite algaecide and a usage method thereof, an adsorbent is uniformly dispersed in water and placed into a water bath reaction tank, FeCl3.6H2O and FeCl2.4H2O are put into the water bath reaction tank in the molar ratio of 2:1, rapid stirring is performed, the temperature is controlled to be 60DEG C to 90 DEG C, ammonia water is added after 15-30 min of stirring, the reaction is continued by 2-4 h, and unassembled magnetic nano materials and absorbent are removed by washing so as to prepare a magnetic composite absorbent; the magnetic composite absorbent and a photocatalyst precursor solution are added to the water bath reaction tank, the reaction is performed by 10-24 h at the temperature of 160 DEG C-220 DEG C, the temperature is cooled to the room temperature after reaction, and the absorbent and the photocatalyst are loaded on the magnetic nano materials after washing, magnetic separation and drying. The magnetic composite algaecide can effectively absorb flocculation algae and pollutants such as nitrogen and phosphorus in the water, toxin released by the algae is degraded by the photocatalysis, and the algae treatment efficiency is improved.

Description

technical field [0001] The invention relates to a magnetic composite algicide and a method for using the same, belonging to the technical field of water pollution control. Background technique [0002] With the development of urbanization and industrialization, human beings discharge a large amount of domestic sewage and industrial wastewater into rivers and lakes, resulting in weak self-purification ability of water bodies, resulting in eutrophication of water bodies, affecting water safety and living environment. Among them, the algae outbreak will deplete the oxygen in the water and cause the death of fish. Some algae release toxins that can poison organisms. For example, Microcystis in cyanobacteria can release microcystin, which is highly toxic and harmful to aquatic organisms and humans. . Therefore, how to deal with algae quickly and effectively is an urgent need to control water pollution. [0003] At present, the treatment of algae in water is often done manually,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/30C02F1/48
CPCY02W10/37C02F1/281C02F1/30C02F1/488C02F2103/007C02F2303/20C02F2305/10
Inventor 尹贞宋丽霞李月中浦燕新王洪庆凌婷廖书林华建敏
Owner WELLE ENVIRONMENTAL GRP CO LTD
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