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Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater

A technology of wastewater treatment and ultrasonic coupling, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of improving utilization rate, enhancing synergistic coupling effect, and improving reaction speed

Inactive Publication Date: 2012-01-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still few studies on the application of sonoelectrochemistry to the treatment of phosphorus-containing wastewater, and the application of ultrasonic-electrochemical coagulation to the treatment of phosphorus-containing wastewater has not been reported.

Method used

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  • Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater
  • Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater
  • Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Prepare simulated wastewater with a total phosphorus of 50 mg / L and treat it in the device of the present invention. The specific operating parameters and processing effects are as follows:

[0033] Operating parameters:

[0034] Ultrasonic input power: 100W;

[0035] Ultrasonic frequency: 80kHz;

[0036] Operating voltage of DC power supply: 8V;

[0037] Support electrolyte Na 2 SO 4 Concentration: 5mmol / L;

[0038] Corresponding current: 0.4A / cm 2 ;

[0039] Plate spacing: 10mm;

[0040] Processing time: 6min.

[0041]

Embodiment 2

[0042] Example 2: Prepare simulated wastewater with a total phosphorus of 10 mg / L and treat it in the device of the present invention. The specific operating parameters and processing effects are as follows:

[0043] Operating parameters:

[0044] Ultrasonic input power: 100W;

[0045] Ultrasonic frequency: 80kHz;

[0046] Operating voltage of DC power supply: 8V;

[0047] Support electrolyte Na 2 SO 4 Concentration: 5mmol / L;

[0048] Corresponding current density: 0.4A / cm 2 ;

[0049] Plate spacing: 20mm;

[0050] Processing time: 6min.

[0051]

Embodiment 3

[0052] Example 3: Prepare simulated wastewater with a total phosphorus of 100 mg / L and treat it in the device of the present invention. Do not start the circulation device, turn on the ultrasonic for 60 minutes before the reaction, turn off the ultrasonic after 60 minutes for separate electrochemical degradation, and take a sample for detection after 30 minutes. The specific test operation parameters and processing effect data list are as follows:

[0053] Operating parameters:

[0054] Ultrasonic input power: 100W;

[0055] Ultrasonic frequency: 80kHz;

[0056] Operating voltage of DC power supply: 15V;

[0057] Support electrolyte Na 2 SO 4 Concentration: 5mmol / L;

[0058] Corresponding current 0.4A / cm 2 ;

[0059] Plate spacing: 10mm.

[0060]

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PUM

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Abstract

The invention discloses ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device. In the method, the phosphorus-contained wastewater of a wastewater storing tank is conveyed into a reaction tank; a power supply supplies power for a positive electrode and a negative electrode in an electrode unit, and the positive electrode generates a metal ion; and an ultrasonic wave generated by an ultrasonic generator directly acts on the phosphorus-contained wastewater in the reaction tank by the wall vibration of the reaction tank and is matched with the high-valence state metal ion to realize the coagulated purification of the phosphorus-contained wastewater. The device comprises the ultrasonic generator, the reaction tank, the power supply, the wastewater storing tank, a water discharge container, a flowmeter and a circulating pump. The invention has high reaction speed, high processing efficiency and low energy consumption.

Description

Technical field [0001] The invention relates to a method and a device for treating phosphorous wastewater by ultrasonic coupling electrochemical coagulation. By designing a flow-type reaction device and using an ultrasonic-assisted electrochemical coagulation device, the processing speed of phosphorus-containing wastewater can be significantly increased. Background technique [0002] The massive discharge of phosphorus-containing wastewater leads to eutrophication of the water body, destroys the ecological balance of the water body, deteriorates the quality of the water environment, seriously affects people's water problems, and also makes the water environment lose its entertainment value. The average content of phosphorus in freshwater and seawater is 0.02mg / L and 0.088mg / L, respectively. At present, urban sewage discharge is increasing rapidly, with an annual increase of up to 2.4 billion m 3 , The concentration of phosphorus in urban sewage is about 10-20mg / L. Generally, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/36C02F1/463
Inventor 薛建军王玲何娉婷崔益华邱美连王兆崴
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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