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Excellent and efficient carbon fiber biofilm carrier modification method

A high-efficiency carbon fiber, biofilm carrier technology, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as poor hydrophilicity and too smooth surface, reduce time and improve mass transfer. Efficiency, the effect of simple and easy preparation method

Inactive Publication Date: 2015-07-29
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to improve the water treatment performance of carbon fiber as a biofilm carrier material, so as to overcome the current shortcomings of poor hydrophilicity and too smooth surface of carbon fiber

Method used

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  • Excellent and efficient carbon fiber biofilm carrier modification method
  • Excellent and efficient carbon fiber biofilm carrier modification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: The carbon fiber filaments are wound into bundles and placed in a solution containing 0.1mol / L HNO 3 In the large beaker of the solution, acid oxidation is carried out, and the immersion time is 12h to increase the surface functional groups and surface activity of carbon fibers and prepare for the attachment of organic iron;

[0021] Step 2: Rinse the acid-oxidized carbon fiber to neutrality with deionized water, and dry it for later use;

[0022] Step 3: configure 0.1mol / L ferrous oxalate solution carbon fiber organic iron modifier, place the carbon fiber bundles in the organic iron modifier for 24h at room temperature, and use the liquid phase impregnation method to make the carbon fibers fully contact with ferrous oxalate;

[0023] Step 4: Rinse the ferrous oxalate-modified carbon fiber bundles with deionized water until the rinsing solution is colorless, and dry, and the ferrous oxalate has been attached to the surface of the carbon fibers to obtain a ferrou...

Embodiment 2

[0030] Step 1: The carbon fiber filaments are wound into bundles and placed in HNO containing 0.05mol / L 3 In the solution, acid oxidation is carried out, and the immersion time is 24h to increase the surface functional groups and surface activity of carbon fibers and prepare for the attachment of organic iron;

[0031] Step 2: Rinse the acid-oxidized carbon fiber to neutrality with deionized water, and dry it at 80° for later use;

[0032] Step 3: configure 0.1mol / L ferric citrate solution as carbon fiber organic iron modifier, put carbon fiber bundles in the organic iron modifier by liquid phase immersion method at 30 °C for 12h, intermittently supplemented by ultrasonic vibration, the frequency is 90Hz, each oscillation time is 90min, and the time interval is 1.5h, so that the carbon fiber filament and the ferric citrate are fully contacted;

[0033] Step 4: Rinse the ferric citrate modified carbon fiber bundles with deionized water until the rinsing solution has no color, ...

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Abstract

The invention discloses an excellent and efficient carbon fiber biofilm carrier modification method and aims to improve water treatment performance of carbon fibers used as biofilm carrier materials. A basic raw material is the carbon fibers; the modification method mainly comprises steps as follows: firstly, acid oxidation treatment is performed on the carbon fibers, so that surfaces of the carbon fibers are ensured to have sufficient functional groups for preparation for iron carrying; then an organic iron solution is used as a modifying agent, surface modification is performed on the carbon fibers with a liquid phase impregnation method, and an organic-iron-modified carbon fiber biofilm carrier material with the surface containing the iron element is prepared. The preparation method is simple and easy to implement, prepared organic-iron-modified carbon fibers can keep original excellent performance of the carbon fibers, the surface roughness and the hydrophilicity are significantly improved, the film colonization cycle is short, the microbial activity is improved, time required for water treatment is short, removal rates of COD, ammonia nitrogen and total phosphorus are obviously increased, the outgoing water quality is good in stability, and the reuse rate is higher.

Description

technical field [0001] The invention relates to the technical field of sewage treatment and materials, in particular to a modification method of carbon fiber as a biofilm carrier material. Background technique [0002] Biofilm is a kind of microenvironment formed by the complex microbial layer embedded in the extracellular polymer matrix, and the microbial community is cross-linked, and the attached solid medium is called filler or carrier. The microorganisms in the biofilm decompose and convert the organic matter in the water into energy for their own growth and reproduction, so as to degrade the organic matter in the water and achieve the purpose of water treatment. The growth and reproduction of biofilms are based on biofilm carriers. The performance of the carrier directly affects the formation of biofilms, thereby affecting the effect of biofilm treatment of sewage. Therefore, biofilm carriers are an important core part of the biofilm process. [0003] Iron is a compon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/10
CPCY02W10/10
Inventor 刘杰姜祁梁节英
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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