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Ecological carbon-fiber composite, preparation method thereof and sewage treatment reactor containing ecological carbon-fiber composite

A fiber composite material, ecological carbon technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. problems, to achieve the effect of reducing the number of replacements, prolonging the service life, and reasonable pore size distribution

Inactive Publication Date: 2012-06-13
BEIJING UNIV OF CHEM TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the scope of action of this biological contact oxidation method is limited, the water flow between the fillers is slow, the hydraulic scouring force is small, the biofilm can only fall off by itself, and the degradation ability of microorganisms to organic pollutants is poor.
[0007] In summary, it is not difficult to find that in the existing biofilm method, the carrier and filler have low specific surface area, poor adsorption capacity, poor surface biocompatibility, slow biofilm film formation, easy storage of sludge, and difficult cleaning and regeneration. , The problem of short service life is that there is a limited range of action, slow water flow between fillers, small hydraulic scouring force, and biofilm can only fall off by itself.

Method used

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  • Ecological carbon-fiber composite, preparation method thereof and sewage treatment reactor containing ecological carbon-fiber composite

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preparation example Construction

[0036] In a typical embodiment of the present invention, the preparation method of the above-mentioned ecological carbon fiber composite material includes the following steps: preparing bioactive carbon fiber; preparing polypropylene fiber mesh cloth; using bioactive carbon fiber as the core layer, using polypropylene fiber mesh cloth as The outer layer is wrapped around the periphery of the core layer, forming an ecological carbon fiber composite material. The preparation process of the ecological carbon fiber composite material is simple and suitable for mass production.

[0037] Among them, the step of preparing bioactive carbon fiber includes: using one or more of polyacrylonitrile fiber, viscose fiber and pitch fiber as raw material, performing pre-oxidation treatment to form pre-oxidized fiber, carbonizing and activating the pre-oxidized fiber processed to form bioactive carbon fibers.

[0038] The step of preparing biologically active carbon fiber in the present invent...

Embodiment 1

[0057] Raw materials: polyacrylonitrile fiber mat with a thickness of 0.5mm, polypropylene fiber filaments with a diameter of 200D, and polypropylene fiber filaments and polyester fiber filaments with a diameter of 150D (manufacturing company: Changzhou Bangguan Chemical Co., Ltd.).

[0058] Preparation:

[0059] After the polyacrylonitrile fiber mat is gradually heated to 200°C at a rate of 3°C / min, pre-oxidation treatment is carried out for 50 minutes to form pre-oxidized filaments; the pre-oxidized filaments are gradually heated at a rate of 10°C / min under a nitrogen atmosphere. After heating up to 700°C, use water vapor as an activating agent for 30 minutes of carbonization and activation treatment to form bioactive carbon fibers.

[0060] The biologically active carbon fibers are treated with ultrasonic waves with a frequency of 50KHz for 10 minutes in a mixed solution prepared by a hydrogen peroxide solution with a concentration of 30% and an ammonia solution with a conc...

Embodiment 2

[0064] Raw materials: viscose fiber mat with a thickness of 0.5mm, polypropylene fiber yarn with a diameter of 500D, and polypropylene fiber yarn and polyester fiber yarn with a diameter of 600D (manufacturing company: Shandong Hailong Co., Ltd.).

[0065] Preparation:

[0066] Gradually raise the temperature of the viscose fiber mat to 300°C at a rate of 5°C / min, and then perform a pre-oxidation treatment for 150 minutes to form a pre-oxidized wire; gradually raise the temperature of the pre-oxidized wire at a rate of 30°C / min in a nitrogen atmosphere After reaching 800°C, use water vapor as an activating agent to perform carbonization and activation treatment for 90 minutes to form bioactive carbon fibers.

[0067] The bioactive carbon fiber is treated with a frequency of 100KHz in a hydrogen peroxide solution with a concentration of 30% for 60 minutes to perform the first surface active treatment; In the 25% ammonia solution, the ultrasonic wave with a frequency of 100KHz ...

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Abstract

The invention provides an ecological carbon-fiber composite, a preparation method thereof and a sewage treatment reactor containing the ecological carbon-fiber composite. The ecological carbon-fiber composite comprises a core layer which is composed of biologically active carbon fibers with a specific surface area of greater than 1000 m<2> / g and an external layer which is composed of an eyelet fabric of polypropylene fibers, wherein the external layer is wrapped around the core layer. According to the invention, the biologically active carbon fibers with a specific surface area of greater than 1000 m<2> / g are used as the core layer, and the polypropylene fiber eyelet fabric is arranged at the external side of the core layer so as to strengthening the core layer; therefore, the ecological carbon-fiber composite has the advantages of a great specific surface area, reasonable pore size distribution, high adsorptivity and high strength, so the composite is sturdy and durable, is convenient to clean and maintain, does not easily hide sludge, enables replacement frequency to be reduced and has a prolonged service life.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an ecological carbon fiber composite material, a preparation method thereof and a sewage treatment reactor comprising the same. Background technique [0002] At present, the biofilm method has become one of the two biological sewage treatment methods juxtaposed with the activated sludge method. Biofilm sewage treatment is to make the sewage contact with the biofilm fixed on the carrier, exchange solid and liquid phase substances, use the microorganisms in the film to oxidize and degrade the organic matter, and purify the sewage. At the same time, the microorganisms in the biofilm continue to grow and The process of reproduction. The biofilm method has the advantages of high treatment efficiency, strong impact load resistance, small volume, easy operation and management, and can avoid the sludge bulking phenomenon of the activated sludge method. It can maintain a high sludge age a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00B01J20/20B01J20/30C01B31/08C02F3/02C02F3/10C01B32/318C01B32/336
CPCY02W10/10
Inventor 海热提·吐尔逊赵东林吴伟明何江何一群
Owner BEIJING UNIV OF CHEM TECH
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