Magnetic-stability fluidized bed photocatalytic reactor and method for treating organic wastewater with difficult degradation thereby

A photocatalytic reactor and organic wastewater technology, which is applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of easy loss of active components, low photocatalytic activity, and photocatalytic quantum rate. Low-level problems, to achieve the effect of reducing the loss of active components, improving utilization efficiency, and mild conditions

Inactive Publication Date: 2010-12-15
太原市恒远化工环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of low photocatalytic quantum rate, low photocatalytic activity and easy loss of active components in the existing photocatalytic oxidation method fo...

Method used

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  • Magnetic-stability fluidized bed photocatalytic reactor and method for treating organic wastewater with difficult degradation thereby
  • Magnetic-stability fluidized bed photocatalytic reactor and method for treating organic wastewater with difficult degradation thereby
  • Magnetic-stability fluidized bed photocatalytic reactor and method for treating organic wastewater with difficult degradation thereby

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Embodiment 1

[0017] A magnetically stable fluidized bed photocatalytic reactor, comprising a cylindrical cylinder 1, a gas inlet 2 is provided on one side of the bottom of the cylindrical cylinder, a liquid inlet 3 is provided directly below, and a gas inlet is provided on the top of the cylindrical cylinder 1. Outlet 4, liquid outlet 5 and catalyst feeding port 6; a UV lamp 7 with a casing is placed in the center of the cylindrical cylinder, and a gas distributor 8 connected to the gas inlet 2 is provided under the UV lamp 7. The cylindrical cylinder There is a Helmholtz coil 9 arranged along its center outside the body; the ultraviolet lamp 7 and the Helmholtz coil 9 are connected to the power controller 10; the gas inlet 2 is connected with a flow buffer 11, a fan 12, and a liquid inlet 3 is connected to the pump 13 and the first liquid storage tank 14 through pipelines, and the liquid outlet 5 is connected to the second liquid storage tank 15 through pipelines.

[0018] The method for ...

Embodiment 2

[0021] A magnetically stable fluidized bed photocatalytic reactor, the structure of which is shown in Example 1.

[0022] The method for treating refractory organic wastewater using the magnetically stable fluidized bed photocatalytic reactor comprises the following steps: 3 The organic wastewater nitrobenzene solution is placed in the first liquid storage tank, and is pumped to the liquid inlet of the magnetically stable fluidized bed photocatalytic reactor, and the magnetically loaded photocatalyst TiO 2 / SiO 2 / a-Fe 2 o 3 or TiO 2 / NiFe 2 o 4 Add the catalyst into the reactor from the catalyst feeding port, the dosage is 2.0 g / L, after the fan is turned on and passes through the flow buffer, the oxygen enters the gas distributor at the bottom of the magnetically stable fluidized bed photocatalytic reactor from the gas inlet, so that the magnetic The photocatalyst is in a suspension state, and then the gas is emptied from the gas outlet; the power controller of the Hel...

Embodiment 3

[0024] A magnetically stable fluidized bed photocatalytic reactor, the structure of which is shown in Example 1.

[0025] The method of using the magnetic stabilization fluidized bed light catalytic reactor to deal with difficulty degradation organic wastewater, including the following steps: the concentration is 200mg / m 3 The p-hydroxybenzoic acid solution of organic wastewater is placed in the first liquid storage tank, and is pumped to the liquid inlet of the magnetically stable fluidized bed photocatalytic reactor, and the magnetically loaded photocatalyst TiO 2 / SiO 2 / NiFe 2 o 4 or TiO 2 / CoFe 2 o 4 The catalyst is fed into the reactor through the catalyst feeding port, and the dosage is 0.1 g / L. After the fan is turned on and passes through the flow buffer, the air and ozone are mixed in any proportion and then enter the gas inlet at the bottom of the magnetically stable fluidized bed photocatalytic reactor. In the gas distributor, the magnetically loaded photocat...

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Abstract

The invention relates to wastewater treatment method and device, in particular to a magnetic-stability fluidized bed photocatalytic reactor and a method for treating organic wastewater with difficult degradation thereby. The method solves the problems of low photocatalytic quantum, low activity and easy loss of active components existing in the traditional photocatalytic method and comprises the following steps of: feeding the organic wastewater to a reactor through a pump and a liquid inlet, adding a magnetism-loaded photocatalyst to the reactor through a catalyst feeding port, starting a fan to make air pass through a flow buffer and then enter an air distributor and make the magnetism-loaded photocatalyst be in a suspension state; starting Helmholtz coils to generate a magnetic field, opening an ultraviolet lamp when the magnetism-loaded photocatalyst is in the suspension state to degrade the organic wastewater, and then discharging the treated organic wastewater to a second liquid storage tank. The utilization rate of light energy can be improved, and because the magnetism-loaded photocatalyst is in the stable suspension state, the active component loss caused by mutual friction can be reduced; and the device has the advantages of compact structure, mild condition and high utilization rate of the light energy and can operate intermittently and run continuously.

Description

technical field [0001] The invention relates to a wastewater treatment method and device, in particular to a magnetically stable fluidized bed photocatalytic reactor and a method for treating refractory organic wastewater. Background technique [0002] Refractory organic pollutants are the biggest problem in the field of chemical production and environmental governance due to their high toxicity, biochemical difficulty, refractory degradation, and high treatment costs. Since refractory organic pollutants are not easy to be degraded by microorganisms, it is not easy to gradually reduce their content through natural self-purification after long-term retention in the environment and discharge into natural environments such as water bodies. Therefore, such substances accumulate continuously in natural media such as water, soil, and air, breaking the original balance of the ecosystem, and posing a huge threat to the environment on which human beings depend. Exposure doses of trac...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/48C02F1/78C02F101/30
Inventor 王燕萍
Owner 太原市恒远化工环保科技有限公司
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