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Device and method for treating high-concentration organic wastewater by cooperation of electrochemistry and photocatalysis

A technology for synergistic treatment of organic wastewater, applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., to achieve the effects of reducing compounding, low maintenance cost, and simple structure

Active Publication Date: 2018-12-28
吴洋洋
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

C 3 N 4 Combined use with macroporous carbon materials and synergistic electrochemical treatment of high-concentration organic wastewater

Method used

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  • Device and method for treating high-concentration organic wastewater by cooperation of electrochemistry and photocatalysis

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Effect test

Embodiment 1

[0034] 1) Visible light is selected as the catalytic light source, the conductive substrate is made of copper material, the two anodes are graphite electrodes, and the wastewater is high-concentration organic wastewater with a COD of 16870mg / L and a BOD of 35423mg / L;

[0035] 2)C 3 N 4 The preparation of macroporous carbon composite material comprises the following steps:

[0036] Dissolve 20 g of urea in 80 mL of deionized water, then add 15 mL of NaOH aqueous solution, mix well, dry at 120 °C, and then calcinate the obtained solid at 600 °C for 3 hours to obtain C with N defects 3 N 4 , 5 g of N-deficient C 3 N 4 Dissolve in 100mL deionized water, stir ultrasonically for 1 hour to obtain mixed solution A, add 1g of macroporous carbon material to 50mL deionized water, and ultrasonically stir for 30 minutes to obtain mixed solution B, slowly add mixed solution B to the mixed solution In A, hydrothermal reaction was carried out at 180°C in the reactor for 5 hours, and C wa...

Embodiment 2

[0040] 1) Visible light is selected as the catalytic light source, the conductive substrate is made of copper material, the two anodes are graphite electrodes, and the wastewater is high-concentration organic wastewater with a COD of 16870mg / L and a BOD of 35423mg / L;

[0041] 2)C 3 N 4 The preparation of macroporous carbon composite material comprises the following steps:

[0042] Dissolve 20 g of urea in 80 mL of deionized water, then add 15 mL of NaOH aqueous solution, mix well, dry at 120 °C, and then calcinate the obtained solid at 600 °C for 3 hours to obtain C with N defects 3 N 4 , 6.7 g of N-deficient C 3 N 4 Dissolve in 100mL deionized water, stir ultrasonically for 1 hour to obtain mixed solution A, add 1g of macroporous carbon material to 50mL deionized water, and ultrasonically stir for 30 minutes to obtain mixed solution B, slowly add mixed solution B to the mixed solution In A, hydrothermal reaction was carried out at 180°C in the reactor for 5 hours, and C ...

Embodiment 3

[0046] 1) Visible light is selected as the catalytic light source, the conductive substrate is made of copper material, the two anodes are graphite electrodes, and the wastewater is high-concentration organic wastewater with a COD of 16870mg / L and a BOD of 35423mg / L;

[0047] 2)C 3 N 4 The preparation of macroporous carbon composite material comprises the following steps:

[0048] Dissolve 20 g of urea in 80 mL of deionized water, then add 15 mL of NaOH aqueous solution, mix well, dry at 120 °C, and then calcinate the obtained solid at 600 °C for 3 hours to obtain C with N defects 3 N 4 , 8 g of N-deficient C 3 N 4 Dissolve in 100mL deionized water, stir ultrasonically for 1 hour to obtain mixed solution A, add 1g of macroporous carbon material to 50mL deionized water, and ultrasonically stir for 30 minutes to obtain mixed solution B, slowly add mixed solution B to the mixed solution In A, hydrothermal reaction was carried out at 180°C in the reactor for 5 hours, and C wa...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a device and a method for treating high-concentration organic wastewater by cooperation of electrochemistry and photocatalysis. A substrate made of a conductive material is coated with a C3N4 / macroporous carbon composite, then the high-concentration organic wastewater is treated by cooperation of electrochemistry and photocatalysis, and the device has the characteristics of being simple in structure, high in wastewater purification efficiency and capable of recycling useful gas.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a device and method for electrochemically and photocatalytically co-processing high-concentration organic wastewater. Background technique: [0002] With the development of industry, the purification of wastewater has become one of the hot spots in the world. There are many kinds of pollutants in wastewater, especially various organic pollutants and heavy metal ions, which enter the human body through the food chain and cause great damage to the human body. At present, the methods used for wastewater treatment mainly include physical methods (including filtration, adsorption, etc.), chemical methods (electrochemical methods, photocatalytic methods, chemical treatment, etc.), biological methods (microbial films, etc.) and the above-mentioned several methods. However, these methods all have the disadvantages of cumbersome treatment methods, poor treatment effects, and...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/461C02F1/72C02F1/463C02F1/469C02F1/465C02F101/30
CPCC02F1/30C02F1/463C02F1/465C02F1/4672C02F1/4676C02F1/469C02F2101/30
Inventor 吴洋洋
Owner 吴洋洋
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