Method for continuously processing degradation-resistant wastewater by means of microwave catalysis and device therefor

A technology for wastewater treatment and refractory degradation, applied in the direction of light water/sewage treatment, etc., can solve the problems of small amount of treated water, difficult solid-liquid separation, short service life of catalysts, etc., to achieve large treatment capacity, improve treatment efficiency, and increase treatment capacity Effect

Inactive Publication Date: 2015-05-13
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the deficiencies in the existing technology of using microwaves and carbon-based catalysts to treat refractory wastewater, the first purpose of the present invention is to provide a method for catalytically and continuously treating refractory wastewater under microwaves. The second purpose of the present invention is to provide a An implementation device for catalytically and continuously treating refractory wastewater under microwaves to solve the problems of difficult solid-liquid separation, small amount of treated water, and short service life of catalysts in the treatment of refractory wastewater in the prior art

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  • Method for continuously processing degradation-resistant wastewater by means of microwave catalysis and device therefor

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Effect test

Embodiment 1

[0022] The walnut shell is ground and carbonized to make carbonized material, mixed with binder, shaped in a molding machine, dried and activated, and then cut into a granular activated carbon catalyst with a diameter of about 2mm.

[0023] The above-mentioned granular activated carbon catalyst is filled into a quartz tube with a diameter of 24 mm to a height of 80 mm to form a fixed bed of granular activated carbon catalyst. The fixed bed of granular activated carbon catalyst is set in a microwave field with a microwave power of 500W perpendicular to the microwave direction and the ground. Pass 2000mg / l simulated ammonia nitrogen wastewater into the fixed bed at a flow rate of 20ml / min. The concentration of ammonia nitrogen before and after treatment was measured by Nessler's reagent spectrophotometry. The concentration of ammonia nitrogen after treatment was 140mg / l, and the removal rate of ammonia nitrogen was 94%. After the same batch of granular activated carbon reacted c...

Embodiment 2

[0025] The walnut shell is ground and carbonized to make carbonized material, mixed with binder, shaped in a molding machine, dried and activated, and then cut into a granular activated carbon catalyst with a diameter of about 2mm.

[0026] The above-mentioned granular activated carbon catalyst is filled into a quartz tube with a diameter of 24 mm to a height of 80 mm to form a fixed bed of granular activated carbon catalyst. The fixed bed of granular activated carbon catalyst is set in a microwave field with a microwave power of 500W perpendicular to the microwave direction and the ground. Pass 2000mg / l simulated ammonia nitrogen wastewater into the granular activated carbon column at a flow rate of 40ml / min. The concentration of ammonia nitrogen before and after treatment was measured by Nessler's reagent spectrophotometry, and the removal rate of ammonia nitrogen was 91%.

Embodiment 3

[0028] The walnut shell is ground and carbonized to make carbonized material, mixed with binder, shaped in a molding machine, dried and activated, and then cut into a granular activated carbon catalyst with a diameter of about 2mm.

[0029] The above-mentioned granular activated carbon catalyst is filled into a quartz tube with a diameter of 24 mm to a height of 80 mm to form a fixed bed of granular activated carbon catalyst. The fixed bed of granular activated carbon catalyst is set in a microwave field with a microwave power of 800W perpendicular to the microwave direction and the ground. The actual coking wastewater was passed through the granular activated carbon column at a flow rate of 20ml / min. The concentration of ammonia nitrogen before and after the reaction was measured by Nessler's reagent spectrophotometry. The concentration of ammonia nitrogen before the reaction was 6270 mg / L, and the concentration after the reaction was 420 mg / L. The removal efficiency of ammonia...

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Abstract

The invention discloses a method for continuously processing degradation-resistant wastewater by means of microwave catalysis and an implementation device thereof. Granular catalyst is filled into quartz tubes to form quartz tube catalyst columns; the quartz tube catalyst columns are placed into a microwave field to form catalyst fixing beds, wherein the intersection angle of the axial direction of the quartz tube catalyst columns and the direction of the irradiation microwave is not less than 45 degrees; wastewater to be processed continuously flows through the catalyst fixing beds, so that pollutants in the wastewater can be removed under the combined action of the microwave and the granular catalyst; processed water and gas produced during wastewater treatment are discharged; the granular catalyst is husk-like granular activated carbon prepared through carbonization, smashing, bonding formation and carbon dioxide activating treatment. With adoption of the method, continuous industrialized degradation of degradation-resistant wastewater can be realized, the operation is simple, the automatic control is facilitated, the application to different wastewater processing amounts can be realized by means of increasing or decreasing the number of the quartz tube catalyst columns, the investment and the operation cost are low, and the removal efficiency is high.

Description

technical field [0001] The invention relates to waste water purification treatment technology, more specifically, relates to a process method and implementation device for continuously treating refractory waste water by using microwave and catalyst fixed bed. Background technique [0002] The wastewater generated in the process of life and production, especially the wastewater that is difficult to degrade and treat, seriously pollutes the living environment of people and brings great harm to people's health. Therefore, how to deal with and purify the wastewater generated in the process of people's life and production Wastewater has always been a major survival issue that people face. [0003] High-concentration ammonia-nitrogen wastewater is a kind of refractory wastewater. At present, stripping process is often used in industry to treat ammonia-nitrogen wastewater, and the effect is obvious. However, the implementation of this method is huge, and the operation requires a la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30
Inventor 蒋文举彭丽
Owner SICHUAN UNIV
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