Microwave photocatalytic fluidized bed waste water treatment device and treatment method

A wastewater treatment and fluidized bed technology, applied in the direction of light water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of low utilization rate of light energy and high treatment cost, and improve absorption and utilization rate, inhibition of adsorption, and improvement of activity

Active Publication Date: 2014-09-17
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application number is CN201110324226.3, which discloses an optical fluidized bed reaction device for organic wastewater treatment, which has the problems of photosynthetic bacteria cultivation, high processing cost, and low utilization rate of light energy

Method used

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  • Microwave photocatalytic fluidized bed waste water treatment device and treatment method
  • Microwave photocatalytic fluidized bed waste water treatment device and treatment method

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Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1, with reference to figure 1 with figure 2 , a microwave photocatalytic fluidized bed wastewater treatment device described in this specific embodiment, comprising a fluidized bed 1, a circulating water pipe 2, a buffer reflux tank 3, a diaphragm pump 4, a microwave conduit 5, a magnetron 6, and a microwave tube A power supply 7 and a photocatalytic reaction device 8, the fluidized bed 1 is connected to the buffer reflux tank 3 through the circulating water pipe 2, and a diaphragm pump 4 is arranged on the downstream of the circulating water pipe 2 between the buffer reflux tank 3 and the fluidized bed 1, and the fluidized bed 1 A microwave conduit 5 is arranged on the top side, and the microwave conduit 5 communicates with the magnetron 6. The magnetron 6 is electrically connected with the microwave tube power supply 7. A photocatalytic reaction device 8 is arranged outside the fluidized bed 1. The photocatalytic reaction device 8 includes The outer cover...

Embodiment 2

[0043] Embodiment 2, with reference to figure 1 and figure 2 , the wastewater treatment method of a microwave photocatalytic fluidized bed wastewater treatment device described in this specific embodiment, prepare 60 mg / L alizarin green simulated printing and dyeing wastewater, adjust the pH value to 5.0, and the wastewater enters the buffer reflux tank 3 through the diaphragm The pump 4 enters the fluidized bed 1 at a flow rate of 1.5 L / min, the amount of photocatalyst added is 1.0 g / L, and the water flow circulates from bottom to top. Turn on the microwave power 1kW of the magnetron 6, turn on the ultraviolet lamp 10, the waste water is subjected to the joint action of microwave, ultraviolet-visible light and photocatalyst, the temperature of the waste water is controlled at 40°C, and the concentration of the waste water is tested by the water quality online detector 21 every 5 minutes. When the concentration of the green simulated printing and dyeing wastewater is less th...

Embodiment 3

[0044] Embodiment 3, with reference to figure 1 and figure 2 , the wastewater treatment method of a microwave photocatalytic fluidized bed wastewater treatment device described in this specific embodiment, prepare 150mg / L phenol wastewater, adjust the pH value to 7.0, the chemical oxygen demand is 380mg / L, and the wastewater enters the buffer The reflux tank 3 enters the fluidized bed 1 through the diaphragm pump 4 at a flow rate of 1.5 L / min, the amount of photocatalyst added is 1.5 g / L, and the water flow circulates from bottom to top. Turn on the microwave power 2kW of the magnetron 6, turn on the ultraviolet lamp 10, the wastewater is subjected to the joint action of microwave, ultraviolet-visible light and photocatalyst, control the temperature of the wastewater at 50°C, and test the concentration of the wastewater by the water quality online detector 21 every 5 minutes, when the phenol wastewater When the concentration is less than 12 mg / L, the removal rate reaches 92%...

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Abstract

The invention relates to a microwave photocatalytic fluidized bed waste water treatment device and treatment method. A diaphragm pump is arranged on the upstream of a circulating water pipe between a buffer reflux tank and a fluidized bed, a microwave conduit is arranged on one side of the top of the fluidized bed and communicated with a magnetron, the magnetron is electrically connected with a microwave tube power supply, a photocatalytic reaction device is arranged on the outer side of the fluidized bed and consists of an outer cover and an ultraviolet lamp, the ultraviolet lamp is arranged in the outer cover, the fluidized bed is filled with photocatalyst, pretreating waste water flows in the buffer reflux tank and flows in the fluidized bed from bottom to top through the diaphragm pump, the magnetron and the ultraviolet lamp are simultaneously turned on, the temperature of waste water in the fluidized bed can be maintained at 80 DEG C below. The microwave photocatalytic fluidized bed waste water treatment device and the treatment method thereof have the beneficial effects that the ultraviolet lamp is arranged on two axial sides of the fluidized bed, so as to be beneficial to internal transmission flight in the fluidized bed, microwave is radiated and introduced by adopting a waveguide manner, so that the photocatalyst activity and the photocatalytic waste water degradation efficiency can be improved, and industrialization can be easily realized.

Description

[0001] technical field [0002] The invention relates to a device and method for treating waste water, in particular to a microwave photocatalytic fluidized bed waste water treatment device and a treatment method thereof. Background technique [0003] The organic pollutants contained in the wastewater discharged by chemical, pharmaceutical and printing and dyeing enterprises include toxic and harmful substances such as phenols, polycyclic aromatic compounds and heterocyclic compounds containing nitrogen, oxygen and sulfur, which are typical refractory organic industrial wastewater . With the development of industry, especially the types and quantities of pollutants entering the groundwater environment are increasing, and the toxic, harmful, tertiary and refractory organic pollutants have seriously threatened human health. At present, the domestic wastewater treatment method mainly adopts biochemical method, which has a good removal effect on phenols and benzenes in wastewat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/32C02F9/08
Inventor 司崇殿周晶刘广军刘国栋王明锋
Owner JINING UNIV
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