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A kind of activated carbon polyvinyl alcohol ball and preparation method thereof

A technology of polyvinyl alcohol balls and polyvinyl alcohol, applied in chemical instruments and methods, fixed on or in inorganic carriers, fixed on/in organic carriers, etc., can solve the problem of easy bonding and knotting between fibers Large specific surface area of ​​block and activated carbon, affecting mass transfer efficiency, etc., to achieve the effect of easy attachment and growth, good removal effect, and high mass transfer efficiency

Inactive Publication Date: 2016-03-09
SHANGHAI XINGYI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface energy of sand and stone is low. During use, when the liquid flows through the surface, it is not easy to spread and form a film, which makes it difficult for the carrier to be effectively wetted, which greatly affects the mass transfer efficiency.
Activated carbon has a large specific surface area, strong adsorption capacity, and easy film formation, but it produces a large amount of sludge. Sludge treatment is the biggest problem in water treatment at present.
Plastic and FRP have small specific surface area, less amount of biofilm, smooth surface, and are not easy to hang film, while fiber filaments have a large specific surface area, relatively easy to hang film, and the gap between the filament bundles can change with the flow of water and air. However, after long-term use, the fibers tend to bond and agglomerate, which affects the treatment effect

Method used

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  • A kind of activated carbon polyvinyl alcohol ball and preparation method thereof
  • A kind of activated carbon polyvinyl alcohol ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 85g of water, add 5g of polyvinyl alcohol, 9.4g of activated carbon, 0.5g of sodium alginate and 0.1g of sodium bicarbonate to the water in turn; stir and heat up to 95°C, dissolve for 0.5 hours until completely dissolved and mixed; The bubbles generated during the dissolution process are removed; the mixture obtained above is placed in the calcium chloride solution with a dropping pill machine, and the sodium alginate in the mixture reacts with calcium chloride to form a sphere; the sphere formed above is put into the aldehyde Pore ​​making and solidification are carried out in the chemical solution, the sodium bicarbonate is completely reacted, then neutralized in the alkaline solution, and then washed with water to obtain the active carbon polyvinyl alcohol spherical carrier.

Embodiment 2

[0032] Take 65g of water, add 16g of polyvinyl alcohol, 12g of activated carbon, 5g of sodium alginate and 2g of calcium carbonate to the water in sequence; stir and raise the temperature to 98°C, dissolve for 1.5 hours until completely dissolved and mixed; after defoaming for 1 hour, the Bubbles are generated and removed; the mixture obtained above is placed in a calcium chloride solution with a dropping pill machine, and the sodium alginate in the mixture reacts with calcium chloride to form spheres; the spheres formed above are put into the formaldehyde solution for Pores are made and solidified, calcium carbonate is completely reacted, then neutralized in alkaline solution, and then washed with water to obtain activated carbon polyvinyl alcohol spherical carrier.

Embodiment 3

[0034] Take 74g of water, add 10g of polyvinyl alcohol, 12g of activated carbon, 3g of sodium alginate, and 1g of sodium bicarbonate to the water in sequence; stir and heat up to 90°C, dissolve for 1 hour until completely dissolved and mixed; after defoaming for 1 hour, it will be dissolved during stirring and dissolving The generated air bubbles are removed; the mixture obtained above is placed in a calcium chloride solution with a dropping pill machine, and the sodium alginate in the mixture reacts with calcium chloride to form a sphere; the sphere formed above is put into the formaldehyde solution Carry out pore making and solidification, sodium bicarbonate is completely reacted, then neutralized in alkaline solution, and then washed with water to obtain activated carbon polyvinyl alcohol spherical carrier.

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Abstract

The invention relates to the field of biological carrier technology, in particular to an activated carbon polyvinyl alcohol ball. Components of the activated carbon polyvinyl alcohol ball include 5-16% of polyvinyl alcohol, 1-25% of activated carbon, 0.5-5% of sodium alginate, and 65-85% of water. The activated carbon polyvinyl alcohol ball is small in diameter, contains the activated carbon on the surface and inside, and enables the specific surface areas of carriers with the same filling ratio to be greatly increased. Meanwhile, many -OH radicals exist in the activated carbon polyvinyl alcohol ball, so the activated carbon polyvinyl alcohol ball has the advantages of being good in hydrophilicity and superior in endophilicity with microorganisms, and the like. In addition, the invention further discloses an activated carbon polyvinyl alcohol ball preparation method which has the advantages of being simple in process, strong in operability, and the like.

Description

technical field [0001] The invention relates to the technical field of biological carriers, specifically an activated carbon polyvinyl alcohol ball, and meanwhile, the invention also discloses a preparation method of the activated carbon polyvinyl alcohol ball. Background technique [0002] Biofilm sewage treatment technology is the development direction of the current sewage treatment technology. Through certain technical means, the selected microorganisms are enriched on the carrier, so that the microorganisms can be fixed and grow, which is conducive to improving the quality and quantity of microorganisms in the bioreactor and improving the system. Capability and adaptability, shorten processing time, reduce processing cost, keep it active and reusable. Biofilm technology was mainly used in the field of fermentation production at first, and was used in the field of water treatment in the late 1970s. Compared with traditional sewage biological treatment technology, biofilm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08L5/04C08K3/04C08J9/08C08J3/12C12N11/14C12N11/10C12N11/08C02F3/34
Inventor 桂忠金鑫赵昌兴
Owner SHANGHAI XINGYI CHEM
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