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Preparation method of biological disk

A biological disc and mixture technology, applied in the field of sewage treatment, can solve the problems of low synthesis rate, increased cost, low yield, etc., and achieve the effects of high removal capacity, recovery treatment capacity, and efficient degradation

Active Publication Date: 2013-04-17
南京元凯生物能源环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the synthesis rate of strains with high degradation rate is generally very low, the yield is low and they are easy to be lost. Continuous addition of bacterial agents is required, which increases the cost

Method used

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  • Preparation method of biological disk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a bio-disc, using N,N-dimethylformamide, polyethylene glycol (molecular weight 10,000), polyvinyl alcohol (molecular weight 1,000-1,00,000) and polyvinylidene fluoride (molecular weight 5,000 -50000) according to the mass ratio of 72:8:15:5 mixture as the mother liquor, the above mixture was placed in a 60°C water bath, and the solid was dissolved under electromagnetic stirring to obtain the mother liquor. Use montmorillonite with a particle size of less than 30 meshes as the immobilized carrier, mix the mother liquor with the immobilized carrier at a mass ratio of 30:1, fully stir and ultrasonically oscillate to make the surface modification liquid; The liquid is coated on the surface of the bio-disc, and after drying, a bio-disc with a surface-modified coating is formed, and the bio-disc with a surface-modified coating is placed in a culture solution containing Novozymes’ biological bacteria for cultivation 1h~3d, let the degrading bacteria ent...

Embodiment 2

[0026] A method for preparing a bio-disc, using a mixture of N,N-dimethylformamide, polyvinylidene fluoride (molecular weight 20,000) and polyethylene glycol in a mass ratio of 80:8:12 as a mother liquor, and placing the above mixture in Dissolve the solid in a water bath at 60° C. under electromagnetic stirring to obtain a mother liquor. Use montmorillonite with a particle size of less than 100 meshes as the immobilized carrier, mix the mother liquor with the immobilized carrier at a mass ratio of 20:1, fully stir and ultrasonically oscillate to make the surface modification liquid; The liquid is coated on the surface of the bio-disc, and after drying, a bio-disc with a surface-modified coating is formed, and the bio-disc with a surface-modified coating is placed in a culture solution containing Novozymes’ biological bacteria for cultivation 2d, allowing degrading bacteria to enter the coating to obtain a bio-disc. The finished bio-disc is stored wet, that is, it is wrapped ...

Embodiment 3

[0028] A method for preparing bio-discs, using a mixture of N,N-dimethylformamide, polyvinyl alcohol (molecular weight 50,000) and polyvinylidene fluoride (molecular weight 20,000) in a mass ratio of 85:5:10 as a mother liquor, The above mixture was placed in a 60° C. water bath, and the solid was dissolved under electromagnetic stirring to obtain a mother liquor. Use montmorillonite with a particle size of less than 50 microns as the immobilized carrier, mix the mother liquor with the immobilized carrier at a mass ratio of 30:1, fully stir and ultrasonically oscillate to make the surface modification liquid; The feed solution is coated on the surface of the bio-disc, and after drying, a bio-disc with a surface-modified coating is formed, and the bio-disc with the surface-modified coating is placed in a culture solution containing EM bacteria for 6 hours, The bio-disc is obtained by allowing the degrading bacteria to enter the coating. The finished bio-disc is stored wet, tha...

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Abstract

The invention discloses a preparation method of a biological disk, which comprises the following steps: using one or mixture of some of N,N-dimethylformamide, polyethyleneglycol, polyethylene, polyvinyl alcohol and polyvinylidene fluoride as a mother solution; by using smectite with the particle size of less than 30 meshes as an immobilization carrier, evenly mixing the mother solution and the immobilization carrier in a mass ratio of (100-3):1 to prepare a surface modification liquid; and applying the surface modification liquid on the surface of a biological disk, drying to form the biological disk with the surface modification coating, putting the biological disk with the surface modification coating into a culture fluid containing efficient degrading microbes, and culturing for 1 hour to 3 days so that the degrading microbes enter the coating, thereby obtaining the biological disk. The smectite-containing coating is applied onto the surface layer of the plastic disk to enhance the adhesion and immobilization capacity of the efficient degrading microbes, thereby improving the bacterial population of the biological disk and enhancing the treatment effect of the system on the pollutants.

Description

technical field [0001] The invention belongs to the field of sewage treatment and relates to a preparation method of a biological disc. Background technique [0002] The biological turntable is a kind of biofilm method, which is composed of a series of parallel rotating discs, a horizontal axis of rotation, a power and deceleration device, and an oxidation tank. The oxidation tank is filled with wastewater to be treated. About half of the discs are submerged below the surface of the wastewater. When the waste water flows slowly in the tank, the disc rotates slowly driven by the rotating horizontal shaft. A layer of microorganisms, known as a biofilm, adheres to the disc. When the disc is submerged in wastewater, the pollutants in the wastewater are absorbed by the biofilm, and when the disc leaves the wastewater, a thin water film is formed on the disc. The water film is in contact with the air to absorb oxygen, and at the same time, under the catalysis of biological enz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/08
CPCY02W10/10
Inventor 杨蕴毅陆继来盛爱红
Owner 南京元凯生物能源环保工程有限公司