Device and method for photo-catalytically degrading phenol-containing wastewater

A phenolic wastewater and photocatalytic technology, applied in chemical instruments and methods, energy wastewater treatment, light water/sewage treatment, etc., can solve the problems of complex photocatalytic reactor structure, difficult industrial application, and difficult separation of catalysts. The effect of industrial design enlargement, simple structure and light loss reduction

Active Publication Date: 2013-11-13
滨州黄海科学技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention also provides a method for degrading phenol-containing wastewater by using the device, degrading phenolic compounds in water through photocatalytic reaction, and overcoming the difficulties in separation of catalysts, low utilization rate of light energy and complex structure of photocatalytic reactor in existing photocatalytic technology , not easy for industrial application, etc.

Method used

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  • Device and method for photo-catalytically degrading phenol-containing wastewater
  • Device and method for photo-catalytically degrading phenol-containing wastewater
  • Device and method for photo-catalytically degrading phenol-containing wastewater

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Embodiment 1

[0031] Embodiment 1: the method for photocatalytic degradation containing phenolic wastewater

[0032] The above-mentioned device is used to treat phenol-containing wastewater. The treatment object is 500mg / L simulated phenol wastewater. The volume of wastewater is 1L. The materials of the turntable and the shell are stainless steel. The nano-titanium dioxide is loaded on the surface of the turntable and the inner wall of the shell by a binder method. The specific steps are:

[0033] (1) Put nano-titanium dioxide into an organic solvent containing a binder, wherein the binder is epoxy resin E-51, the organic solvent is toluene, the mass ratio of toluene to nano-titanium dioxide is 20:1, and the epoxy resin E-51 is The mass ratio of -51 to nano-titanium dioxide is 1:1. After mixing evenly, add curing agent ethylenediamine. The mass ratio of epoxy resin E-51 to ethylenediamine is 8:1. The specific dosage is:

[0034] Toluene: 100g

[0035] Nano titanium dioxide: 5g

[0036] ...

Embodiment 2

[0043] The conditions of the treatment object and catalyst loading method are consistent with those of Example 1, and the operating conditions are: the rotating speed of the turntable is 500r / min, the light source is a 254nm low-pressure mercury lamp, and the light intensity is 13.35mW / cm 2 , the flow rate is 50L / h. Sampling and analysis after 4 hours showed that the removal rate of phenol was 68.12%.

Embodiment 3

[0045] Treatment object and catalyst loading method conditions are consistent with embodiment 1, operating conditions: turntable speed 0r / min, light source is 254nm low-pressure mercury lamp, light intensity 18.45mW / cm 2 , the flow rate is 30L / h. Sampling and analysis after 4 hours showed that the removal rate of phenol was 70.22%.

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Abstract

The invention discloses a device and method for photo-catalytically degrading phenol-containing wastewater, and belongs to the technical field of industrial wastewater treatment. The device comprises a rotary disc reactor and a liquid storage tank, wherein the rotary disc reactor comprises a shell, a rotary disc, a rotary shaft, excitation light sources, a liquid inlet tube and a liquid outlet tube, wherein the rotary disc is horizontally arranged in the center of the shell, the excitation light sources are respectively arranged above and below the rotary disc, the rotary disc is driven to rotate through the rotary shaft, and the rotary shaft is controlled by a motor and a frequency converter. The rotary disc reactor and the liquid storage tank form a circulating system. The photo-catalytically degrading method comprises the following steps: (1) preparing a loaded photocatalyst; and (2) photo-catalytically degrading organic wastewater. According to the device and method disclosed by the invention, catalysts are simultaneously loaded on the inner walls of the rotary disc and the shell of the reactor, and the excitation light sources are installed above and below the rotary disc, so that the photocatalytic reaction time is prolonged, the mass transferring effect is intensified, and the efficiency of light energy utilization is improved. According to the device and method disclosed by the invention, the defects that the catalyst is hard to separate, low in efficiency of light energy utilization, complex in structure of photocatalytic reactor, difficult to apply industrially and the like in an existing photocatalysis technology are overcome.

Description

technical field [0001] The invention relates to a device and method for photocatalytically degrading phenol-containing wastewater, belonging to the technical field of chemical wastewater treatment. Background technique [0002] As an advanced oxidation technology, photocatalytic technology can almost completely mineralize organic pollutants in air and water without secondary pollution. The reaction conditions are mild and energy consumption is low. It can be irradiated with ultraviolet light or exposed to sunlight. react. [0003] Since the use of photocatalytic reactors to degrade organic compounds through photocatalytic oxidation reactions under ultraviolet light, many researchers have devoted themselves to the research of this type of advanced chemical oxidation technology, but there are few large-scale industrial applications. The main problem is that Photocatalysts are difficult to separate and recover and there is a lack of suitable high-efficiency photocatalytic reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F1/72C02F1/58
CPCY02W10/37
Inventor 刘有智张世光高璟甄茹张巧玲祁贵生焦纬洲王建伟
Owner 滨州黄海科学技术研究院有限公司
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