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Immobilized material, biological denitrification material, preparation method and application

A biological denitrification and raw material technology, applied in the field of materials, can solve the problems of insufficient carbon source for denitrifying microorganisms, inability to denitrify and denitrify, and lack of carbon source function, so as to improve the effect of denitrification and denitrification, and the preparation method is simple , the effect of broad application prospects

Pending Publication Date: 2020-11-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of immobilized material, to solve the problem that the existing immobilized material proposed in the above-mentioned background technology generally does not play the role of carbon source, there are denitrifying microorganisms in low carbon-nitrogen ratio wastewater, which are easy to die due to insufficient carbon source. The problem of inability to denitrify and denitrify

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An immobilization material includes the following raw materials: 10 g of polyvinyl alcohol, 1 g of sodium alginate, and 0.1 g of polyhydroxybutyrate valeric acid copolyester.

[0037] In the embodiment of the present invention, the preparation method of the immobilized material specifically includes the following steps:

[0038] Weigh the above-mentioned polyvinyl alcohol and add water and heat to mix evenly (dissolve completely) to make a gel to obtain the first mixture; the amount of water added in the first mixture is 3 times the weight of the polyvinyl alcohol;

[0039] Weigh the above-mentioned sodium alginate and dissolve it in water, and dissolve it completely to obtain a second mixture; the amount of water added in the second mixture is 15 times the weight of the sodium alginate;

[0040] The second mixture is added to the first mixture and mixed evenly, and then the above polyhydroxybutyrate copolyester is added and mixed evenly to obtain the immobilized materi...

Embodiment 2

[0042] An immobilization material includes the following raw materials: 30 g of polyvinyl alcohol, 3 g of sodium alginate, and 1 g of polyhydroxybutyrate valeric acid copolyester.

[0043] In the embodiment of the present invention, the preparation method of the immobilized material specifically includes the following steps:

[0044] Weigh the above-mentioned polyvinyl alcohol and add water and heat to mix evenly (dissolve completely) to make a gel to obtain the first mixture; the amount of water added in the first mixture is 4 times the weight of the polyvinyl alcohol;

[0045] Weighing the above-mentioned sodium alginate and dissolving it in water, completely dissolving it to obtain a second mixture; the amount of water added in the second mixture is 20 times the weight of the sodium alginate;

[0046] The second mixture is added to the first mixture and mixed evenly, and then the above polyhydroxybutyrate copolyester is added and mixed evenly to obtain the immobilized mater...

Embodiment 3

[0048] An immobilization material comprises the following raw materials: 20 g of polyvinyl alcohol, 2 g of sodium alginate, and 0.5 g of polyhydroxybutyrate copolyester.

[0049] In the embodiment of the present invention, the preparation method of the immobilized material specifically includes the following steps:

[0050] Weigh the above-mentioned polyvinyl alcohol and add water and heat to mix uniformly (dissolve completely) to make a colloid to obtain the first mixture; the amount of water added in the first mixture is 3.5 times the weight of the polyvinyl alcohol;

[0051] Weigh the above-mentioned sodium alginate and dissolve it in water, and dissolve it completely to obtain a second mixture; the amount of water added in the second mixture is 17 times the weight of the sodium alginate;

[0052]The second mixture is added to the first mixture and mixed evenly, and then the above polyhydroxybutyrate copolyester is added and mixed evenly to obtain the immobilized material. ...

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Abstract

The invention relates to the field of materials, and particularly discloses an immobilized material, a biological denitrification material, a preparation method and application. The immobilized material is prepared from the following raw materials: polyvinyl alcohol, sodium alginate and poly(hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The prepared immobilized material can be added into denitrifying bacteria to prepare the biological denitrification material, and the denitrification effect can be remarkably improved. Meanwhile, the PHBV has the effect of providing a carbon source in denitrification, and the denitrification efficiency can be improved in aquaculture wastewater. Moreover, the preparation method provided by the invention is simple, is capable of improving the denitrificationcapacity of immobilized denitrifying bacteria in low-carbon-nitrogen-ratio wastewater by adding the PHBV, and solves the problems that: existing immobilized materials generally cannot play a role of acarbon source, and denitrifying microorganisms in the low-carbon-nitrogen-ratio wastewater are likely to be incapable of denitrifying due to insufficient carbon source.

Description

technical field [0001] The invention relates to the field of materials, in particular to an immobilized material, a biological denitrification material, a preparation method and an application. Background technique [0002] With the continuous development of science and technology, people pay more and more attention to environmental issues. Among them, the method of using microorganisms to remove nitrogen has broad application prospects in environmental governance. Usually, when using denitrifying microorganisms to denitrify water bodies, immobilized materials are used to provide growth space for denitrifying microorganisms, which in turn can make denitrifying microorganisms into a form that is not easy to lose, and can be used to catalyze biochemical reactions for denitrification denitrification. [0003] At present, there are many immobilization materials available for immobilization of microorganisms. Commonly used adsorption materials for microorganism immobilization i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N11/084C12N11/10C12N11/096C02F3/28C02F101/16
CPCC12N11/084C12N11/10C12N11/096C02F3/28C02F2101/16
Inventor 王忠全
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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