Three-dimensional electro-catalysis device and method for synchronously removing organic pollutants and total nitrogen

A technology for organic pollutants and catalytic devices, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc. Sludge production, catalytic improvement effect

Pending Publication Date: 2022-06-07
SHANDONG PACIFIC ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors found that the existing three-dimensional electrode composition is not effective in removing organic matter and nitrate nitrogen in organic wastewater, and the effect of removing organic matter and nitrate nitrogen at the same time is not good

Method used

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  • Three-dimensional electro-catalysis device and method for synchronously removing organic pollutants and total nitrogen
  • Three-dimensional electro-catalysis device and method for synchronously removing organic pollutants and total nitrogen

Examples

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preparation example Construction

[0033] The anode was fabricated using Gd-doped titanium-based tin dioxide (Ti / Gd-SnO 2 ) including the treatment of the Ti substrate and the preparation of the topcoat. The Ti substrate treatment includes grinding, alkali cleaning and pickling etching. The Ti substrate is first polished with 60-grit coarse sandpaper, then polished with 300-grit fine sandpaper to remove surface oxides, and then soaked in 30% NaOH solution to wash off oil, etc. Organic matter, soaked in a water bath at 80°C for 2.0 hours, rinsed with distilled water supplemented by ultrasonic waves, and finally etched with 10% oxalic acid solution, soaked in a water bath at 98°C for 2.0 hours, rinsed with distilled water supplemented by ultrasonic waves, and stored in absolute ethanol for later use. The treated titanium substrate lost its metallic luster and the surface was in a pockmarked state. Impregnation solution made of SnCl 4 , SbCl 3 , Gd(NO 3 ) 3 , water, hydrochloric acid, ethanol, propanol and is...

Embodiment 1

[0036] A three-dimensional electrocatalytic device for removing organic pollutants, nitrate nitrogen and ammonia nitrogen, comprising: a support layer 13 and an anode plate 7 above the support layer 13, a cathode plate 9, a particle electrode 8, and an aeration device, and the particle electrode 8 is located at the anode Between the plate 7 and the cathode plate 9, the anode plate 7 is made of a titanium substrate, and a coating layer is arranged on the surface of the titanium substrate.

[0037] A number of anode plates 7 and cathode plates 9 are provided, and a number of anode plates and cathode plates are arranged at intervals. Further, several anode plates and cathode plates are arranged vertically. Further, the distance between the anode plate and the cathode plate is 10-20 cm. In one embodiment, 5 sets of polar plates are provided.

[0038] It also includes a casing. The casing is provided with a water inlet 5 and a water outlet. The water inlet 5 is located below the ...

Embodiment 2

[0042] The common electrocatalytic devices described in Example 2 and Example 3 are (anode plate and cathode plate are titanium substrates, respectively, no particle electrodes, and no coating on the surface of the anode).

[0043] Example 2

[0044] A chemical company in Shandong produces wastewater. The main pollutants are formaldehyde, methanol, N-methylpyrrolidone, tetrahydrofuran, toluene, etc. The wastewater is yellow and turbid with irritating gas, COD is 3600mg / L, and total nitrogen is 100mg / L L, pH 7.0. A three-dimensional electrocatalytic device that simultaneously removes organic pollutants and total nitrogen by turning on the DC power supply. Adjust the air flow rate of the aeration pipe to 6L / min. Waste water enters from the water inlet, and after electrocatalytic degradation, flows out from the water outlet. By comparing the same water quality at the project site, one uses the three-dimensional electrocatalytic device of Example 1, and the other uses an ordina...

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Abstract

The invention relates to a three-dimensional electro-catalysis device and method for removing organic pollutants, nitrate nitrogen and ammonia nitrogen. Treating the wastewater by using a three-dimensional electrode catalysis system; according to the three-dimensional electrode catalytic system, metallic titanium serves as an anode, a coating is arranged on the surface of an anode plate, the coating is made of Gd-doped titanium-based tin dioxide serving as the anode, metallic titanium serves as a cathode, a particle electrode is arranged between the cathode and the anode, and the particle electrode is bentonite-loaded nanoscale zero-valent iron doped with copper and manganese metal elements. The effect of treating organic wastewater, especially sewage containing refractory organics and nitrate nitrogen, is improved on the basis of not adding chemicals.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and sewage treatment, and in particular relates to a three-dimensional electrocatalytic device and method for removing organic pollutants, nitrate nitrogen and ammonia nitrogen. Background technique [0002] The disclosure of information in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Three-dimensional electrocatalysis technology is to fill particle materials between traditional two-dimensional electrodes. The electrode material is the core of the three-dimensional electrocatalytic oxidation method, which makes the three-dimensional electrocatalytic device have electrocatalytic properties, and produces strong oxidizing substances (such as h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/16C02F101/30
CPCC02F1/4672C02F1/46109C02F2101/30C02F2209/16C02F2101/163C02F2101/16C02F2001/46133C02F2001/46142C02F2209/08C02F2209/06C02F2201/4618C02F2201/4619C02F2201/46105C02F2201/4612C02F2303/14
Inventor 徐晨阳左良秀戴文豪孙迎超朱杰高
Owner SHANDONG PACIFIC ENVIRONMENTAL PROTECTION
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