Bamboo charcoal-polyvinyl formal biological carrier and preparation thereof

A polyvinyl formal, biological carrier technology, applied in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult cleaning and replacement, high price and high wear rate , to achieve the effect of favorable film hanging, strong adsorption and high strength

Inactive Publication Date: 2009-05-13
SHENYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a kind of bamboo charcoal-polyvinyl formal biological carrier and Its preparation process, the carrier uses polyvinyl formal as the main raw material, ethanol is used to control the reaction process in the production process, bamboo charcoal is added to increase the surface area, and calcium carbonate and citric acid are used for foaming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Measure 80 parts of water, weigh 0.2 part of sodium hydroxide, take an appropriate amount of water from the measured water, and dissolve the sodium hydroxide for use.

[0030] (2) Heat the remaining water to 70°C, add 10 parts of polyvinyl alcohol and stir, and control the temperature at 90-95°C until the polyvinyl alcohol is completely dissolved.

[0031] (3) Add 0.5 part of hydrochloric acid, take 5 parts of 36% formaldehyde solution and slowly add to (2) within 30 minutes, keep the temperature at 75-95° C., and stir.

[0032] (4) When a flocculent precipitate appears in the solution (3), add an appropriate amount of ethanol dropwise until the precipitate disappears, continue stirring and heating, and when the flocculent precipitate appears again, add an appropriate amount of ethanol dropwise until the precipitate disappears.

[0033] (5) After reacting for 40-60 minutes, cool down to 50°C, add sodium hydroxide, and adjust the pH value to 8-9.

[0034] (6) Add 20...

Embodiment 2

[0039] (1)-(5) are the same as in Example 1.

[0040] (6) Add 30 parts of bamboo charcoal into (5), and stir well.

[0041] (7) Add 6 parts of calcium carbonate into (6) and stir evenly.

[0042] (8) Add 4 parts of citric acid into (7) and stir evenly, pour into the mold and let it stand for foaming.

[0043] (9) Wash and cut the product after foaming is complete.

Embodiment 3

[0045] (1)-(5) are the same as in Example 1.

[0046] (6) Add 25 parts of bamboo charcoal into (5), and stir well.

[0047] (7) Add 9 parts of calcium carbonate into (6) and stir evenly.

[0048] (8) Add 6 parts of citric acid into (7) and stir evenly, then pour into the mold and let stand to foam.

[0049] (9) Wash and cut the product after foaming is complete.

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PUM

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Abstract

The invention provides a bamboo carbon-polyvinyl formal biological carrier for water treatment and a process for preparing the same. The bamboo carbon-polyvinyl formal biological carrier is designed for solving the technical problems of high price, high abrasion ratio, large density, easy fragile, and difficult cleaning and replacement in the prior biological carrier active carbon and the inorganic carrier, and is produced by using polyvinyl formal as the organic polymer carrier, and adding filler such as bamboo-carbon for foaming treatment of calcium carbonate and citric acid. The prepared product has the characteristics of communication pore, multiple pores, micro pores, has large specific surface and biological compatibility, facilitates bacteria laminating and carries a large amount of bacteria, can fully meet the application requirements of suspended filler for water treatment, has great scientific and social significance, and can create good environmental, social and economic benefits if being popularized and applied.

Description

Technical field: [0001] The invention belongs to the field of environmental engineering materials, and in particular relates to a bamboo charcoal-polyvinyl formal biological carrier for water treatment and a preparation process thereof. Background technique: [0002] Biofilm technology is the key technology to solve my country's water environment problems. Immobilized bacterial technology (IBT) plays an important role in biofilm technology. Biofilm water treatment technology has the characteristics of simple and convenient maintenance and management, less floor space and no secondary pollution. With the acceleration of my country's economic construction, the demand for high-efficiency environmental protection technology is getting higher and higher, and there is an urgent need for stable and reliable technologies with low investment and operating costs, no secondary pollution, convenient management, and effluent treatment standards. In immobilized bacteria technology, bact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 李国德张阳武士威李娜王传银
Owner SHENYANG NORMAL UNIV
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