Surplus sludge loaded photocatalyst as well as preparation method and application thereof

A photocatalyst and excess sludge technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as high cost, low load rate, and complicated preparation process, and achieve clean environment and high load rate High and simple preparation method

Inactive Publication Date: 2014-10-29
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is: in order to overcome the problems of low load rate, complex preparation process and high cost of the current loaded photocatalyst, provide a new type of residual sludge loaded TiO with high load rate and low cost. 2 Photocatalyst, the excess sludge loaded photocatalyst directly supports the photocatalyst on the excess sludge, and provides a method for preparing the excess sludge loaded photocatalyst with simple operation and low cost and its application in air purification

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  • Surplus sludge loaded photocatalyst as well as preparation method and application thereof
  • Surplus sludge loaded photocatalyst as well as preparation method and application thereof
  • Surplus sludge loaded photocatalyst as well as preparation method and application thereof

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Embodiment 1

[0037] Embodiment 1: a kind of excess sludge loaded photocatalyst of the present invention, described photocatalyst is loaded on the excess sludge carrier, through calcining, grinding, obtains excess sludge loaded photocatalyst ( figure 1 ). The obtained excess sludge loaded photocatalyst is placed in a container containing formaldehyde, and irradiated with ultraviolet light, so as to achieve the purpose of degrading formaldehyde.

[0038] The preparation method of the above-mentioned residual sludge loaded photocatalysis comprises the following steps:

[0039] (1) Weighing: Weigh the remaining sludge carrier and TiO according to the mass ratio of 6:1 2 catalyst of light;

[0040] (2) Mixing: Mix the weighed remaining sludge carrier and photocatalyst evenly;

[0041] (3) Calcination: calcining the mixed mixture in a muffle furnace with the temperature set at 540°C;

[0042] (4) Grinding: load the remaining sludge after calcination with TiO 2 The photocatalyst is ground i...

Embodiment 2

[0050] Embodiment 2: a kind of excess sludge loaded photocatalyst of the present invention, described photocatalyst is loaded on the excess sludge carrier, after calcining, grinding, generate excess sludge load photocatalyst, the gained excess sludge load photocatalyst is placed In organic wastewater, and irradiated with ultraviolet light, so as to achieve the purpose of treating organic wastewater.

[0051] The preparation method of the above-mentioned excess sludge loaded photocatalyst comprises the following steps:

[0052] (1) Weighing: Weigh the remaining sludge carrier and TiO according to the mass ratio of 6:1 2 catalyst of light;

[0053] (2) Mixing: mix the weighed remaining sludge carrier with TiO 2 The photocatalyst is mixed evenly;

[0054] (3) Calcination: calcining the mixed mixture in a muffle furnace with the temperature set at 540°C;

[0055] (4) Grinding: load the remaining sludge after calcination with TiO 2 The photocatalyst is ground into granules. ...

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Abstract

The invention discloses a surplus sludge loaded photocatalyst. The photocatalyst is loaded on a surplus sludge carrier and is calcined and grinded to obtain the surplus sludge loaded photocatalyst which can be used for effectively degrading formaldehyde and organic wastewater. The invention discloses a preparation method of the surplus sludge loaded photocatalyst. The preparation method is characterized by comprising the following steps: weighing surplus sludge and a TiO2 photocatalyst according to a mass ratio of 6 to 1; uniformly mixing to obtain a mixture and putting the mixture into a muffle furnace with the temperature being 540 DEG C to be calcined; and grinding into powder or grains. The invention further discloses an application of the surplus sludge loaded photocatalyst. The application is characterized by comprising the following steps: putting matters to be graded into a reactor; adding the surplus sludge loaded photocatalyst; turning on an ultraviolet lamp for irradiating to degrade the formaldehyde and recycling the photocatalyst. The surplus sludge loaded photocatalyst disclosed by the invention is high in loading rate, not easy to fall off, high in photocatalysis efficiency and stable in effect; the preparation method and the application disclosed by the invention are simple and convenient, and low in cost, and can be popularized and applied in air purification and organic wastewater treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a resource utilization method for excess sludge in a sewage treatment plant. The invention also relates to the field of practical application of photocatalytic technology, in particular to a novel excess sludge-loaded photocatalyst. Background technique [0002] At present, biological methods such as activated sludge method and biofilm method are widely used in urban sewage treatment, but a large amount of residual sludge is usually produced during the sewage treatment process. [0003] Excess sludge refers to the solid, semi-solid and liquid wastes produced during the sewage treatment process, and is an inevitable product of sewage treatment plants. According to the "2013-2017 China Sludge Treatment and Disposal In-depth Research and Investment Strategic Planning Analysis Report" statistics, in 2010, more than 2,500 urban sewage treatment plants have been built in my country, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01D53/86B01D53/72C02F1/32
Inventor 陈洪波李小明朱格叶淑静王贝贝李炜琦柳虹杨麒曾光明
Owner HUNAN UNIV
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