Method for treating high-salt degradation-resistant wastewater by using closed bipolar electro-Fenton reactor

A Fenton reaction and wastewater technology, applied in chemical instruments and methods, water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as consumption, poor treatment effect of high-salt wastewater, quenching hydroxyl radicals, etc., to achieve Simple operation, low cost, and achieve the effect of degradation

Active Publication Date: 2022-04-12
西南兵工重庆环境保护研究所有限公司 +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of electric Fenton reaction device and the method for wastewater treatment, to solve the existing electric Fenton system processing high salt wastewater process, due to There is a large amount of chlorine ions, so that the chlorine ions will form a large amount of active chlorine with the oxidant (hydrogen peroxide) on the surface of the anode, thereby rapidly consuming the input oxidant-hydrogen peroxide (HClO+H2O2 sub>→H++Cl-+H2O+O2), and quench Hydroxyl radicals (·OH+Cl-→·HOCl-;·HOCl-+H+→Cl ·+H2O;
[0006]), resulting in poor treatment effect of high-salt wastewater

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating high-salt degradation-resistant wastewater by using closed bipolar electro-Fenton reactor
  • Method for treating high-salt degradation-resistant wastewater by using closed bipolar electro-Fenton reactor
  • Method for treating high-salt degradation-resistant wastewater by using closed bipolar electro-Fenton reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] An electric Fenton reaction device, comprising an anode pool 1 and a cathode pool 2, the anode pool 1 is connected to the positive pole of a power supply 3 through an electrode, the cathode pool 2 is connected to the negative pole of the power supply 3 through an electrode, and the anode pool 1 and the cathode pool 2 are also connected through a conductive member 4 , by using the electrodes in the anode cell 1 and the cathode cell 2 as driving electrodes, and using the conductive member 4 as a common electrode, the anode cell 1 and the cathode cell 2 are independently subjected to an electric Fenton reaction.

[0048] The anode pool and the cathode pool are separately set up, and the anode pool is connected to the positive pole of the power supply through the electrodes, the cathode pool is connected to the negative pole of the power supply, and the anode pool and the cathode pool are also connected to the anode pool and the cathode pool through a conductive part, and the...

Embodiment 2

[0061] The method for treating high-salt wastewater using a conventional electric Fenton reaction device comprises the following steps: adjusting the pH value of the refractory high-salt wastewater to be treated to 3, adding 0.195g FeSO 4 Catalyst and 2.3ml hydrogen peroxide, turn on the DC power supply, and control the current density of the driving electrode of the conventional electric Fenton reaction device to be 5mA / cm 2 , for degradation reaction 2h.

[0062] In the present embodiment, the COD situation of the wastewater after the reaction is shown in the table below:

[0063] Table 1 embodiment 2 COD removal table

[0064]

Embodiment 3

[0065] Embodiment 3 adopts the method for treating high-salt wastewater by the closed double-cathode electric Fenton reaction device in embodiment 1, comprising the following steps:

[0066] 1) Adjust the pH value of the refractory high-salt wastewater to be treated to 3, add 0.08g Fe 2+ After the catalyzer, introduce in the anode cell of the closed electric Fenton reaction device, turn on the DC power supply, and control the current density of the driving electrodes in the anode cell and the cathode cell to be 5mA / cm 2 , carry out the degradation reaction;

[0067] 3) Discharge the wastewater in the anode pool, inject the wastewater in the adjustment pool into the cathode pool in turn, inject the wastewater in the anode pool into the adjustment pool, adjust the pH value of the untreated wastewater to 3, and add 0.08g FeSO 4 After the catalyst is injected into the cathode pool;

[0068] 4) Add 2.3mL of hydrogen peroxide to the cathode pool, turn on the power supply and the u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an electro-Fenton reaction device and a wastewater treatment method. The reaction device comprises an anode tank, an adjusting tank and a cathode tank, electrodes in the anode tank and the cathode tank are used as driving electrodes, a conductive part is used as a common electrode to transmit electrons, and the anode tank and the cathode tank independently react. The wastewater treatment method comprises the following steps: adjusting the pH value of wastewater, adding a catalyst, and introducing the wastewater into the anode tank, the adjusting tank and the cathode tank; adding an oxidizing agent into the cathode tank, turning on a power supply and an ultraviolet lamp, and carrying out degradation reaction; and discharging the wastewater in the cathode tank, injecting the wastewater in the adjusting tank into the cathode tank, injecting the wastewater in the anode tank into the adjusting tank, injecting the untreated wastewater into the anode tank, and continuously carrying out degradation reaction. The problem that in the process of treating the high-salinity wastewater through an existing electro-Fenton system, chloride ions rapidly consume an oxidizing agent, and consequently the treatment effect of the high-salinity wastewater is poor is solved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an electro-Fenton reaction device and a wastewater treatment method. Background technique [0002] With the substantial increase in the amount of high-salt wastewater in printing and dyeing, papermaking, chemical and pesticide industries, the huge harm and irreparable characteristics it brings to the regional environment make the treatment of this type of wastewater increasingly become a hot issue in the field of water pollution and environmental governance. In particular, industrial saline wastewater, including chloride salts, sulfates and nitrates, contains a large amount of toxic and refractory organic pollutants in addition to high concentrations of salt itself. [0003] In the prior art, commonly used wastewater treatment technologies include membrane separation method, advanced oxidation method, biological treatment method, etc., but these methods are difficult...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F1/76C02F1/32C02F101/30
CPCY02W10/37
Inventor 叶志洪王大智何强夏攀敖黎鑫王沙贺恩云李伯娇
Owner 西南兵工重庆环境保护研究所有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap