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Preparation method of Fenton-like catalytic membrane

A catalytic membrane and Fenton technology, applied in the field of water treatment, can solve problems such as small application range, low utilization rate, and secondary pollution, and achieve the effects of easy control of reaction, low cost, and efficient utilization

Inactive Publication Date: 2012-07-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention will solve existing Fenton oxidation technology to exist H 2 o 2 The technical problems of low utilization rate, secondary pollution, and small application range; and a preparation method of Fenton-like catalytic membrane is provided

Method used

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  • Preparation method of Fenton-like catalytic membrane
  • Preparation method of Fenton-like catalytic membrane
  • Preparation method of Fenton-like catalytic membrane

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Experimental program
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specific Embodiment approach 1

[0008] Specific embodiment one: the preparation method of the Fenton-like catalytic membrane of the present embodiment is carried out according to the following steps: 1. Mix the PVDF powder and the additive, then add the compound of the Fenton-like system, then add the solvent and stir until completely dissolved, Static degassing to obtain the casting solution, and then the Fenton-like catalytic membrane is obtained through film-forming treatment; wherein the compound of the Fenton-like system is composed of one of copper sulfate, copper chloride, copper nitrate and nano-titanium dioxide and iron A mixture of compounds; or the compound of the Fenton system is a compound of iron.

[0009] The catalyst prepared by the method of this embodiment can efficiently and quickly catalyze hydrogen peroxide, and the decomposition rate of hydrogen peroxide increases with the increase of the amount of catalytic membrane, up to 98%. It has good adsorption and oxidation functions for organic ...

specific Embodiment approach 2

[0011] Embodiment 2: This embodiment is different from Embodiment 1 in that: the mass ratio of the PVDF powder to the additive is 1:8-10. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: This embodiment is different from Embodiment 1 in that the mass ratio of the PVDF powder to the additive is 1:9. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method of a Fenton-like catalytic membrane, belonging to the field of water treatment. The invention solves the technical problems of low H2O2 utilization ratio, secondary pollution and small application range of the traditional Fenton oxidation technology. The method comprises the following steps of: mixing PVDF (Polyvinylidene Fluoride) powder and an additive; then, adding a compound of a Fenton-like system; adding a solvent; stirring until the mixture is completely dissolved; standing for defoaming to obtain a membrane casting liquid; and then carryingout membrane forming treatment to obtain the Fenton-like catalytic membrane. The catalyst prepared with the method can efficiently and quickly catalyze hydrogen peroxide, and the resolution ratio of the hydrogen peroxide increases along with the addition of the catalytic membrane; the Fenton-like catalytic membrane has good adsorption and oxidization functions on organic matters in water, and haslow requirement on the pH of polluted water quality, the hydrogen peroxide is catalyzed when the pH value is 3-11, and the Fenton-like catalytic membrane can be reused. The preparation method has simple step and is easy to control.

Description

technical field [0001] The invention belongs to the field of water treatment. Background technique [0002] Fenton oxidation treatment technology is a promising water treatment technology, and it is the most active and attractive field in the research of advanced oxidation technology in the past ten years. Although Fenton oxidation technology has a good effect on treating refractory organic pollutants in water, it has the following shortcomings in practical application: ①H 2 o 2 The utilization rate is not high, and the degradation of organic matter is incomplete; ②The simple Fenton reaction must be carried out in an acidic medium with a pH<3, and the acidity of the actual wastewater generally does not exceed 3, and the extremely low acidity requirement increases the cost of water treatment. Contents of the invention [0003] The present invention will solve existing Fenton oxidation technology to exist H 2 o 2 The technical problems of low utilization rate, seconda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J35/00C02F1/72C02F101/38
Inventor 张瑛洁马军李莉张丽刘国瑞刘增贺
Owner HARBIN INST OF TECH