Device for treating chlorophenol wastewater by ultrasonic-assisted active membrane electrode and treatment method

An ultrasonic-assisted, active membrane technology, applied in the direction of special treatment targets, water/sewage treatment, chemical instruments and methods, etc., to reduce osmotic resistance, accelerate electrochemical reaction rate, and restore the effect of electrode membrane flux

Active Publication Date: 2020-08-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above defects or improvement needs of the existing electrochemical oxidation device, the present invention provides a method and device for treating chlorophenol wastewater with an ultrasonic-assisted active membrane electrode

Method used

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  • Device for treating chlorophenol wastewater by ultrasonic-assisted active membrane electrode and treatment method
  • Device for treating chlorophenol wastewater by ultrasonic-assisted active membrane electrode and treatment method
  • Device for treating chlorophenol wastewater by ultrasonic-assisted active membrane electrode and treatment method

Examples

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Effect test

Embodiment 1

[0039] Experimental group: configuration containing 4-chlorophenol concentration of 50mg L -1 Simulated waste water was treated in the device of the present invention for 40 minutes. The specific operating parameters and processing effects are as follows: the ultrasonic input power is 80W, and the ultrasonic frequency is 25kHz. The operating voltage of the regulated power supply is 1V, and the current density is 0.85mA cm -2 . In order to improve the conductivity, the sewage treatment tank contains an inert electrolyte Na 2 SO 4 , whose concentration is 0.05mol L -1 . The anode material chooses conductive ceramic material titanium suboxide active film electrode (length 7.7cm, inner diameter 2.3cm, length 2.8cm), the cathode material chooses stainless steel mesh (length 55cm, height 7.5cm, wire diameter 1mm, aperture 2.63mm), and the reference Electrode selection Ag / AgCl electrode (0.195V vs SHE). The wire material is copper wire. The anode is located in the center of t...

Embodiment 2

[0042] Experimental group: configuration containing 4-chlorophenol concentration of 50mg L -1 Simulated waste water was treated in the device of the present invention for 40 minutes. The specific operating parameters and processing effects are as follows: the ultrasonic input power is 80W, and the ultrasonic frequency is 25kHz. The operating voltage of the regulated power supply is 3V, and the current density is 0.85mA cm -2 . In order to improve the conductivity, the sewage treatment tank contains an inert electrolyte Na 2 SO 4 , whose concentration is 0.05mol L -1 . The anode material chooses conductive ceramic material titanium suboxide active film electrode (length 7.7cm, inner diameter 2.3cm, length 2.8cm), the cathode material chooses stainless steel mesh (length 55cm, height 7.5cm, wire diameter 1mm, aperture 2.63mm), and the reference Electrode selection Ag / AgCl electrode (0.195V vs SHE). The wire material is copper wire. The anode is located in the center of t...

Embodiment 3

[0045] Experimental group: configuration containing 4-chlorophenol concentration of 50mg L -1 Simulated waste water was treated in the device of the present invention for 40 minutes. The specific operating parameters and processing effects are as follows: the ultrasonic input power is 80W, and the ultrasonic frequency is 25kHz. The operating voltage of the regulated power supply is 6V, and the current density is 0.85mA cm -2 . In order to improve the conductivity, the sewage treatment tank contains an inert electrolyte Na 2 SO 4 , whose concentration is 0.05mol L -1 . The anode material chooses conductive ceramic material titanium suboxide active film electrode (length 7.7cm, inner diameter 2.3cm, length 2.8cm), the cathode material chooses stainless steel mesh (length 55cm, height 7.5cm, wire diameter 1mm, aperture 2.63mm), and the reference Electrode selection Ag / AgCl electrode (0.195V vs SHE). The wire material is copper wire. The anode is located in the center of t...

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Abstract

The invention discloses a device and a method for treating chlorophenol wastewater by an ultrasonic-assisted active membrane electrode, relates to the technical field of sewage treatment, and providesa method and a device for treating chlorophenol wastewater by an ultrasonic-assisted active membrane electrode to solve the defects or improvement requirements of an existing electrochemical oxidation device. According to the scheme, oxygen bubbles separated out of the active membrane electrode are broken to generate instantaneous high temperature and high pressure under the cavitation action ofultrasonic waves, the yield of hydroxyl radicals is increased, the membrane flux of the electrode is improved, mass transfer of the surface of the electrode is enhanced, the electrochemical reaction rate is increased, and pollutants are efficiently degraded; besides, ultrasonic waves have a continuous cleaning effect on the surface of the electrode pore channel, the problem of pollution caused bylong-time operation of the electrode is solved, and thus the service life of the electrode is prolonged. According to the method, chlorophenol wastewater is efficiently degraded through acoustoelectric driving reaction, operation is easy, convenient and efficient, stability is high, secondary pollution is avoided, and the method is an ideal environment pollution treatment technology. The method isapplied to the field of environmental pollution treatment.

Description

technical field [0001] The invention relates to a method and a device for treating chlorophenol wastewater with an ultrasonic-assisted active membrane electrode, belonging to the technical field of sewage treatment. Using ultrasound to assist the electro-oxidation process of the active membrane electrode can significantly improve the degradation effect of the electrode p-chlorophenol wastewater. Background technique [0002] With the rapid development of industry, the amount and types of organic matter discharged into water bodies are increasing day by day, resulting in serious water pollution. Chlorophenols are widely used in the production of herbicides, fungicides, dyes, and pharmaceuticals, and the chlorophenols wastewater discharged from the production process has the characteristics of high toxicity and easy accumulation, which poses a great threat to the environment and human health. . Electrochemical oxidation technology is an emerging water treatment technology in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/44C02F1/36C02F101/34C02F101/36
CPCC02F1/4672C02F1/36C02F1/44C02F2101/36C02F2303/14C02F2101/345
Inventor 尤世界滕洁裴姝钊张金娜
Owner HARBIN INST OF TECH
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