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Composite material comprising expandable graphite and phenolic resin group active carbon

A technology of phenolic resin and expanded graphite, which is applied in the field of materials for treating oily domestic sewage, can solve the problems of affecting the quality of oil removal, the large pore diameter of expanded graphite materials, and the inability to store a large amount of organic toxic substances, etc., and achieves high oil absorption efficiency and wide application. Effect

Inactive Publication Date: 2005-12-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Activated carbon has been used as a filter material for liquids for a long time, for decolorization, removal of odorous substances, removal of turbid substances, etc., and recently, it is also used to remove organic and toxic substances in water, such as Japanese patents, JP 09-077508, JP 2000-044966 etc., but due to the small microporous structure of activated carbon, it cannot store a large amount of organic toxic substances
[0004] Expanded graphite has good oil absorption capacity. For example, Japanese Patent Application Laid-Open No. 3-258029 uses expanded graphite products as the oil-absorbing material for heavy oil and general domestic sewage. However, the expanded graphite material has a large pore size and cannot absorb a large amount of particles with a particle size of less than 1 μm. Molecular suspended oil droplets affect the quality of oil removal

Method used

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  • Composite material comprising expandable graphite and phenolic resin group active carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: An expanded graphite-phenolic resin-based activated carbon composite material for treating oily domestic sewage, take expanded graphite 50 and phenolic resin-based activated carbon 50 by weight percentage, and mix them uniformly in a mixer to form a product, and pack it into a textile bag Products made of various complex shapes are used as filter materials for domestic oily sewage.

[0016] The expandable graphite is one or two kinds of graphite products which are obtained from natural phosphorous graphite or petroleum carbon-based artificial graphite or coke-based artificial graphite through interlayer treatment, and have expansion characteristics when heated above 200°C The mixture of the above graphites is any mixing ratio when two or more graphites are mixed; the particle size is generally 20-200 mesh, the best particle size range is 20-50 mesh, and the specific surface area is 150m 2 / g or more.

[0017] The phenolic resin-based activated carbon is m...

Embodiment 2

[0020] Embodiment 2: An expanded graphite-phenolic resin-based activated carbon composite material for treating oily domestic sewage, take 30% of expandable graphite and 70% of phenolic resin-based activated carbon by weight percentage, mix them uniformly in a mixer to form a product, and pack them into textiles In the bag, it is used as domestic oily sewage filter material, and the filter layer is 10cm. The use effect is shown in Table 1.

Embodiment 3

[0021] Embodiment 3: Expandable graphite 20 and phenolic resin-based activated carbon 80 are uniformly mixed in a mixer to form a product, packed into a textile bag, and used as a domestic oily sewage filter material with a filter layer of 10 cm. The results are shown in Table 1.

[0022] example

1

2

3

Maximum oil storage capacity

(g) / L

40

30

20

Sewage treatment

ability

good effect

Can be used as domestic water

use

good effect

Can be used as domestic water

use

good effect

Can be used as domestic water

use

[0023] Note: 1. The experimental temperature is room temperature, 2. Domestic oily sewage is canteen sewage.

[0024] The waste oil adsorbed by the expanded graphite-phenolic resin-based activated carbon composite material can be squeezed out to extrude 70-80% of the waste oil; Make 5-10 times.

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Abstract

The invention relates to a material for treating oily domestic sewage. The expanded graphite-phenolic resin-based activated carbon composite material is characterized in that it is composed of expanded graphite and phenolic resin-based activated carbon, and the total weight percentage of each component is: expanded graphite 20-50, phenolic resin-based activated carbon 50-80. It has the characteristics of strong ability and remarkable effect in treating oily sewage. It is a new type of environmentally friendly material. The invention is widely used, and besides being used for treating oily domestic sewage, it can also be used as a substrate for oil absorbing materials, oil mist filter materials, oil sealing material additives, fragrances and insecticides.

Description

technical field [0001] The invention relates to a material for treating oily domestic sewage, especially an expanded graphite-phenolic resin-based activated carbon composite material for treating oily domestic sewage, which is suitable for treating oily domestic sewage and can filter and absorb the size of the sewage Different dirty oil droplets make the sewage treatment basically meet the standard of daily water. Background technique [0002] In recent years, with the rapid increase of population and the continuous expansion of cities, the discharge of domestic sewage oil has posed a serious threat to the river, marine environment and human life. All countries have formulated strict standards for the discharge of domestic sewage oil. my country stipulates that the second type of domestic wastewater Among them, the discharge standard is below 10mg / L. In order to protect the ecological environment of our country and prevent oil pollution, it is of great practical and social si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20
Inventor 王勇吴胜军万涛
Owner WUHAN UNIV OF TECH
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