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Reactor for continuous flow photocatalytic degradation of organic micropollutants

A technology for catalytic degradation and pollutants, applied in the direction of water pollutants, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of ineffective degradation of organic micro-pollutants, facilitate subsequent denitrification treatment, and improve sewage treatment Efficiency, the effect of improving degradation performance

Pending Publication Date: 2022-03-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention proposes a reactor for continuous flow photocatalytic degradation of organic micro-pollutants. degradation problem

Method used

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  • Reactor for continuous flow photocatalytic degradation of organic micropollutants
  • Reactor for continuous flow photocatalytic degradation of organic micropollutants
  • Reactor for continuous flow photocatalytic degradation of organic micropollutants

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preparation example Construction

[0050] The preparation method of the cadmium sulfide / molybdenum disulfide nanomaterial photocatalytic film comprises the following steps:

[0051] 1.1) Preparation of rod-shaped cadmium sulfide nanomaterials: hydrated cadmium nitrate and thiourea were added to ethylenediamine solution at a certain molar ratio, stirred evenly, and then transferred to a stainless steel autoclave lined with polytetrafluoroethylene. Keep it under the temperature for a certain period of time, cool to room temperature, wash and dry to obtain rod-shaped cadmium sulfide nanomaterials, and use a quartz mortar to grind into powder;

[0052] 1.2) CdS@MoS with three-dimensional hierarchical structure 2 Preparation of nano-hybrid nanomaterials: add hydrated sodium molybdate and thioacetamide to deionized water at a certain molar ratio, stir evenly, add rod-shaped cadmium sulfide nanomaterials prepared in step 1.1) and stir to form a suspension ; The suspension was transferred to a polytetrafluoroethylene-...

Embodiment 1

[0062] A reactor for continuous photocatalytic degradation of organic micro-pollutants, its structure includes a stainless steel water tank, a self-priming pump 4, a flow meter 5 and a photocatalytic membrane reactor; the photocatalytic membrane reactor includes a light source assembly and a Reaction container 6; the light source assembly includes an LED light barrel and a fan 13 outside the LED light barrel, and the fan is used for cooling the LED light barrel; the reaction container 6 includes a glass reaction chamber, a feed port 7, and a primary filter layer 9. Photocatalytic film layer 10, discharge port 11, sampling port 14; said photocatalytic film layer 10 contains cadmium sulfide / molybdenum disulfide nanomaterial photocatalytic film; said feed port 7, discharge port 11 respectively Located above and below the glass reaction chamber, the sampling port 14 is located in the middle of the connecting pipe between the discharge port 11 and the water tank 2; the sewage to be tr...

Embodiment 2

[0074] A reactor for continuous photocatalytic degradation of organic micro-pollutants, its structure includes a stainless steel water tank, a self-priming pump 4, a flow meter 5 and a photocatalytic membrane reactor; the photocatalytic membrane reactor includes a light source assembly and a Reaction container 6; the light source assembly includes an LED light barrel and a fan 13 outside the LED light barrel, and the fan is used for cooling the LED light barrel; the reaction container 6 includes a glass reaction chamber, a feed port 7, and a primary filter layer 9. Photocatalytic film layer 10, discharge port 11, sampling port 14; the photocatalytic film layer 10 contains cadmium sulfide / molybdenum sulfide nanomaterials; the feed port 7 and the discharge port 11 are respectively located in the glass reaction chamber Above and below, the sampling port 14 is located in the middle of the connecting pipe between the discharge port 11 and the water tank 2; the sewage to be treated e...

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Abstract

The invention provides a reactor for continuous flow photocatalytic degradation of organic micropollutants. The reactor structurally comprises a reaction container (6), the reaction container (6) comprises a feed port (7), a reaction cavity (8) and a discharge port (11); a plurality of photocatalytic film layers (10) are distributed in the cavity body of the reaction cavity (8); and each photocatalytic film layer (10) comprises a cadmium sulfide / molybdenum disulfide nano material photocatalytic film (19). According to the invention, rapid and continuous treatment of organic micropollutants in sewage can be realized, and an innovative strategy is provided for oxidative degradation of low-concentration organic micropollutants at the initial stage of water treatment.

Description

technical field [0001] The invention relates to a reactor for continuous photocatalytic degradation of organic micro-pollutants, which belongs to the field of sewage treatment equipment. Background technique [0002] Changes in human activity patterns in recent years have had a profound impact on the content of bioavailable nitrogen in water bodies, almost doubling the nitrogen input to terrestrial and marine ecosystems; the main source of nitrogen in water bodies is industrial wastewater and domestic sewage. emissions, and the extensive use of industrial nitrogen fertilizers in agricultural production; the discharge of a large amount of nitrogen-containing wastewater into rivers will accelerate the abnormal diffusion of certain characteristic algae (mainly cyanobacteria, green algae, etc.), reduce water transparency and dissolved oxygen, and cause Agricultural non-point source pollution and water eutrophication. [0003] Moving bed biofilm reactor (MBBR) technology is an i...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F9/14B01J27/051C02F101/30
CPCC02F1/30C02F9/00B01J27/051C02F2101/30C02F1/001C02F3/02B01J35/39Y02W10/37
Inventor 王沛芳周钢裴智鹏胡斌王洵
Owner HOHAI UNIV
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