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A photocatalytic composite filter with water purification function and preparation method thereof

A composite filtration and water purification technology, which is applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of porous carrier water permeability, mechanical properties, catalyst adhesion strength, light-receiving performance, etc., to improve the strength of the matrix and surface erosion resistance, reduced maintenance costs, good water permeability and corrosion resistance

Active Publication Date: 2021-10-15
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its wide application is limited due to the water permeability, mechanical properties, adhesion strength of catalysts on its surface, and light-receiving performance of porous supports.

Method used

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  • A photocatalytic composite filter with water purification function and preparation method thereof
  • A photocatalytic composite filter with water purification function and preparation method thereof
  • A photocatalytic composite filter with water purification function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a photocatalytic composite filter with water purification function, comprising the following steps:

[0036] (1) Soak the quartz sand in water and wash it twice, drain the quartz sand and put it into NaOH solution to stir and soak, then drain the quartz sand and put it in an oven for drying for later use;

[0037] (2) Mix melamine and glass glaze powder and put them into a ball mill to evenly mix to form mixed powder 1, and sieve it for later use;

[0038] (3) Put the quartz sand, glass glaze powder and water into the mixer and mix evenly to form the mixed powder 2, take it out for later use;

[0039] (4) The mold cylinder 4 is sealed and fixed on the upper surface of the mold base 7, and the inner wall of the mold cylinder 4, the upper surface of the mold base 7 and the upper and lower sides of the separator 6 are all brushed with a layer of boron nitride release agent, and adhered to a layer graphite paper;

[0040](5) First, use a vibrating s...

Embodiment 2

[0056] The difference from Example 1 is that the particle size of the quartz sand in step (1) is changed to 5-10 mesh, and other preparation steps and material ratios remain unchanged, and a photocatalytic composite filter with high water permeability can be obtained , suitable for occasions with higher water passing requirements.

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Abstract

The invention discloses a preparation method of a photocatalytic composite filter with water purification function and a photocatalytic composite filter with water purification function. A plurality of partitions are used to separate the mold into independent units, and each unit is divided according to Two layers of melamine and glass glaze powder mixture are filled in the middle of a layer of quartz sand and glass glaze powder mixture. The mold is placed in a vacuum hot-press furnace. Heat preservation and pressure for 120min under the condition of 10~15Pa, after cooling with the furnace, multiple composite filters can be obtained. The prepared composite filter has the integrated functions of photocatalytic degradation and filtration and adsorption, and also has excellent water permeability, corrosion resistance and erosion resistance, and is suitable for the purification treatment of high-concentration sewage.

Description

technical field [0001] The invention relates to a photocatalytic composite filter with water purification function and a preparation method of the photocatalytic composite filter with water purification function, and belongs to the technical field of composite material forming. Background technique [0002] The continuous progress of the human industrialization process has brought us economic benefits, but it has also caused serious damage to the environment. A large amount of industrial wastewater and agricultural sewage are discharged into rivers, lakes and oceans without treatment or incomplete treatment. These sewage It has the characteristics of many types of pollution, complex components, and poor biodegradability. Due to the stable physical and chemical properties of a large number of pollutants, it is difficult to degrade and remove them in a short time by ordinary chemical or biological treatment methods, so the treatment efficiency is low. Due to the existence of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14C02F1/00C02F1/28C02F1/30C02F1/72
CPCB01D39/14C02F1/001C02F1/28C02F1/30C02F1/725
Inventor 饶磊王沛芳王平凡
Owner HOHAI UNIV