A filter felt for photocatalytic sewage treatment and preparation method thereof

A technology for sewage treatment and filter felt, which is applied in the directions of light water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of low photocatalytic efficiency and large loss, and achieve operability. Strong, not easy to run off, efficient purification effect

Inactive Publication Date: 2011-11-30
上海图和环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, titanium dioxide can only effectively use the ultraviolet band in sunlight, and it will not correspond to the visible light band.
Chinese patent CN1980729 discloses a resin porous membrane using titanium dioxide for water purification treatment, but because only titanium dioxide is used for photocatalysis, the photocatalytic efficiency is not high
At the same time, the direct use of nano-titanium dioxide will also have the problem of large loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: 20 g of mesoporous molecular sieves coated with nano-cuprous oxide on the surface, 5.8 g of fatty alcohol polyoxyethylene ether AEO, and 3.4 g of n-butyl titanate were ultrasonically dispersed in water to form a suspension; the PP filter felt was placed flat and immersed in Adjust the pH value of the above solution to 5-6, heat up to 60°C under high pressure and keep it for 60 minutes; take out the gadolinium and dry it at 110°C.

Embodiment 2

[0020] Example 2: 20 g of mesoporous molecular sieves coated with nano-cuprous oxide on the surface, 8.8 g of alkylphenol polyoxyethylene ether (OP-10), and 4.0 n-butyl titanate are ultrasonically dispersed in water to form a suspension; PE is filtered Lay the felt flat and immerse it in the above solution to adjust the pH value to 7-8, raise the temperature to 80°C under normal pressure and keep it for 60 minutes; take out the gadolinium and dry it at 150°C.

Embodiment 3

[0021] Example 3: 20 g of mesoporous molecular sieves coated with nano-cuprous oxide on the surface, 10 g of block polyoxyethylene-polyoxypropylene ether (PO-EO), and n-butyl titanate 4.0 are ultrasonically dispersed in water to form a suspension; Put the PET filter mat flat and immerse it in the above solution to adjust the pH value to 7-8, raise the temperature to 80°C under normal pressure and keep it for 60 minutes; take out the gadolinium and dry it at 120°C.

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PUM

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Abstract

The invention discloses a filter felt for photocatalytic sewage treatment and a preparation method thereof. The filter uses cuprous oxide-plated mesoporous materials and titanium dioxide gel as photocatalysts, and filter felts as carriers to prepare high-efficiency water treatment filter felts with corresponding visible light and ultraviolet photocatalytic effects. The weight ratio of the composite material to the filter felt substrate is 500-50000ppm. The invention uses mesoporous materials and gel materials as catalyst carriers, effectively avoids catalyst loss caused by water flow, has the advantages of high catalytic efficiency and long duration of effect, and is especially used for treating printing and dyeing organic sewage.

Description

Technical field [0001] The invention relates to a preparation method of a filter felt, in particular to a novel filter felt with light response, high catalytic efficiency and good stability, which is mainly used for organic sewage treatment in the textile industry and a preparation method thereof. Background technique [0002] Scientific research has found that cuprous oxide can respond to sunlight and has good photocatalytic degradation characteristics for organic phenols. Copper is placed in organic sewage, and then the organic pollutants in organic sewage are degraded by photocatalysis. The efficiency is not high, and it is easy to cause a large amount of nano-copper and its salt to enter the water cycle, resulting in copper-rich water and affecting the ecological balance. For example, the Chinese patent CN1657427A discloses a method for mechanically catalyzing the degradation of p-nitrobenzene by nano-scale cuprous oxide, and the invention discloses a method for the deg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/32C02F1/00C02F103/30
CPCY02W10/37
Inventor 余晓锦
Owner 上海图和环保材料科技有限公司
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