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Activated carbon fiber modification method, water treatment filter device and application of water treatment filter device

An activated carbon fiber and water treatment technology, applied in the field of water treatment and filler, can solve the problems of inability to use the environment for a long time, insufficient strength and toughness, easy to fall off and easy to block, etc., to achieve good water purification effect, enhanced microbial affinity, environmental protection friendly effect

Inactive Publication Date: 2015-03-25
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the problems existing in traditional biological fillers that are easy to fall off and block, insufficient in strength and toughness, not resistant to corrosion, not resistant to high temperature, low in adsorption performance, and unable to be used for a long time, and the modification method of carbon fiber in the prior art is not environmentally friendly and There are problems such as harm to the human body. The present invention provides a modification method of activated carbon fiber filaments, a water treatment filler device and its application. The oxygen-containing functional groups on the surface of the modified activated carbon fiber filaments are significantly increased, and the adsorption effect is good, and the service life is long. Easy to use, the water treatment packing made of it is friendly to the environment, easy to use, and has a good water purification effect. It can be widely used in sewage treatment projects such as organic dye wastewater, pharmaceutical factory wastewater, papermaking wastewater, domestic sewage, and water plant raw water purification, etc.

Method used

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  • Activated carbon fiber modification method, water treatment filter device and application of water treatment filter device
  • Activated carbon fiber modification method, water treatment filter device and application of water treatment filter device

Examples

Experimental program
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Effect test

Embodiment 1

[0038]Boil and soak the PAN-based carbon fiber filaments in deionized water for 2.5 hours and keep stirring; then move to room temperature deionized water and soak for 3 hours and keep stirring, and then wash with a large amount of deionized water to remove impurities. After cleaning, the PAN-based carbon fiber filaments Dry at 120°C for 10 hours to obtain the pretreated activated carbon fiber filaments; dilute analytically pure nitric acid with a mass fraction of 65% with deionized water to obtain a nitric acid solution with a concentration of 0.15mol / L, and then prepare the obtained pretreated Immerse activated carbon fiber filaments in 0.15mol / L nitric acid solution, add ammonium dihydrogen phosphate according to the molar concentration ratio of ammonium dihydrogen phosphate (99% in mass concentration, analytically pure) to nitric acid and stir, and soak for 12 hours Take it out, heat it and dry it for 10 hours, then calcine it under the condition of passing through N2 for 0...

Embodiment 2

[0041] Such as figure 1 with figure 2 As shown, a water treatment packing device includes a packing monomer 5, a steel wire rope 6, a fixed bracket 8 and a hard plastic tube 9, one end of the steel wire rope 6 is fixed on the fixed bracket 8, and the filler monomer 5 is connected in series on the steel wire rope 6. Ten filler monomers 5 are connected in series on each steel wire rope 6, and each two filler monomers 5 are separated by a hard plastic tube 9; the filler monomer 5 is composed of a water treatment filler 1 and an annular carrier 4, and the water The treatment filler 1 is the modified PAN-based carbon fiber filament in Example 1, with a length of 10 cm, and one end folded in half is clamped inside the annular carrier 4 and fixed; the manufacturing material of the annular carrier 4 is POM plastic, made of Composed of two discs, the central part of the disc is provided with a central disc 3, and the outer side is a ring 10 with a diameter of 12 cm. The ring 10 is pr...

Embodiment 3

[0044] The modification method of PAN base carbon fiber silk is the same as embodiment 1, and difference is: the immersion time in the step (b) is 2h; The calcination temperature in the step (f) is 570 ℃, and the calcination time is 0.5h, and the holding temperature is 92° C.; the concentration of the nitric acid solution in step (e) is 0.20 mol / L, obtained by diluting the analytical grade nitric acid with a mass fraction of 68% with deionized water.

[0045] The specific surface area of ​​the PAN-based carbon fiber modified by the method in this example increases by about 0.9 times on average, and the microbial affinity is enhanced, which can better provide conditions for the growth and reproduction of various microorganisms, and the film-hanging rate and uniformity The amount of film hanging increased by 36% and 42% respectively, which can better absorb and absorb dissolved and suspended pollutants in water.

[0046] The above-mentioned modified PAN-based carbon fiber filame...

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Abstract

The invention discloses an activated carbon fiber modification method, a water treatment filter device and an application of the water treatment filter device, and belongs to the field of water treatment and filler. Firstly, carbon fiber precursors are pretreated by deionized water, immersed by a salpeter solution with ammonium dihydrogen phosphate and then dried and sintered, and modified active carbon fiber is obtained. The specific surface area and surface oxygen-containing groups of the activated carbon fiber are increased, the microorganism affinity is enhanced, the film formation speed and the film formation amount of water treatment filler obtained on basis of the activated carbon fiber are remarkably increased, dissolved and suspended pollutants in water can be better absorbed, the water treatment filler device can be used for sewage treatment engineering such as treatment of organic dye wastewater, wastewater of a pharmaceutical factory, papermaking wastewater and the like as well as purification of domestic wastewater, raw water of a water factory and the like, and the advantages that the method is simple and easy to implement, the water treatment filler has a simple structure, the design is reasonable, and manufacture is easy are achieved.

Description

technical field [0001] The invention belongs to the field of water treatment and filler, and more specifically relates to a modification method of activated carbon fiber filaments, a water treatment filler device and applications thereof. Background technique [0002] At present, in order to meet the requirements of environmental protection, industries with large sewage discharges such as papermaking and textiles use various technologies to treat the discharged sewage. Generally speaking, the treatment of such sewage is difficult and the treatment cost is high. [0003] Biological filler is one of the core technologies in water treatment, and it is of great significance in the field of water treatment. The difference in material, structure and performance of biological filler directly affects the effect of water treatment. The honeycomb biological filler made of glass fiber reinforced plastic or plastic has the characteristics of large specific surface area and high porosit...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F3/10C02F3/00
CPCB01J20/20B01J20/28023C02F3/00C02F3/101C02F3/106C02F3/109C02F2003/003C02F2101/308C02F2103/02C02F2103/026C02F2103/28Y02W10/10
Inventor 张毅王伟民王伟朱伟吴京唐秋萍李秀霞
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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