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Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device

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

Inactive Publication Date: 2010-06-30
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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  • Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device
  • Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device
  • Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Prepare total phosphorus to be 50 mg / L simulated wastewater, 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] Supporting 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 total phosphorus to be 10 mg / L simulated wastewater, and treat it in the device of the present invention. The specific operating parameters and processing effects are listed as follows:

[0043] Operating parameters:

[0044] Ultrasonic input power: 100W;

[0045]Ultrasonic frequency: 80kHz;

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

[0047] Supporting 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 total phosphorus to be 100 mg / L simulated wastewater, and treat it in the device of the present invention. Do not start the circulation device, turn on the ultrasonic wave 60 minutes before the reaction, turn off the ultrasonic wave after 60 minutes for separate electrochemical degradation, and take samples for detection after 30 minutes. The specific test operating parameters and treatment 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] Supporting 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 device for ultrasonically coupled electrochemical coagulation treatment of phosphorus-containing wastewater. By designing a flow reaction device and using an ultrasonic-assisted electrochemical coagulation device, the treatment speed of phosphorus-containing wastewater can be significantly improved. 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 use problems, and also makes the water environment lose its recreational value. The average content of phosphorus in fresh water and sea water is 0.02mg / L and 0.088mg / L respectively. At present, urban sewage discharge is increasing rapidly, with an annual increase of 2.4 billion m 3 , The concentration of phosphorus in urban sewage is about 10-20mg / L. Gene...

Claims

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Application Information

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Patent Type & Authority Applications(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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