Ultrasonic-electrical catalyzing treatment azo dyes waste water processing device and reaction conditions

A technology for catalyzing azo and dye wastewater, applied in the direction of electrochemical water/sewage treatment, water/sludge/sewage treatment, mechanical oscillation water/sewage treatment, etc., to improve the reaction speed, utilization rate, and reaction speed Effect

Inactive Publication Date: 2009-03-11
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 degradation of organic matter in water, and the application of ultrasonic-electrocatalytic technology to the treatment of azo dye wastewater has not been reported.

Method used

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  • Ultrasonic-electrical catalyzing treatment azo dyes waste water processing device and reaction conditions
  • Ultrasonic-electrical catalyzing treatment azo dyes waste water processing device and reaction conditions
  • Ultrasonic-electrical catalyzing treatment azo dyes waste water processing device and reaction conditions

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: prepare 300mg / L methyl orange simulated waste water 1000mL, test in the device of the present invention, concrete reaction conditions and treatment effect are as follows:

[0026] Reaction conditions:

[0027] Ultrasonic input power: 0.5W / cm 2 ;

[0028] Ultrasonic frequency: 59kHz

[0029] Operating voltage of thyristor ballast: 8V;

[0030] Concentration of supporting electrolyte NacL: 0.03mol / L;

[0031] Corresponding current density: 18mA / cm 2 ;

[0032] Flow rate: 50mL / min.

[0033] Plate spacing: 5mm

[0034] Cycle processing time: 120min

[0035]

Embodiment 2

[0036] Embodiment 2: prepare 100mg / L methylene blue simulated waste water 1000mL, test in the device of the present invention, concrete reaction condition and treatment effect list are as follows:

[0037] Reaction conditions:

[0038] Ultrasonic input power: 0.5W / cm 2 ;

[0039] Ultrasonic frequency: 59kHz

[0040] Operating voltage of thyristor ballast: 8V;

[0041] Concentration of supporting electrolyte NaCl: 0.03mol / L;

[0042] Corresponding current density: 18mA / cm 2 ;

[0043] Flow rate: 25mL / min.

[0044] Plate spacing: 5mm

[0045] Cycle processing time: 80min

[0046]

Embodiment 3

[0047] Example 3: Prepare 5000mL of 300mg / L methyl orange simulated waste water, test 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 then pass through 30 minutes after the excessive Sampling for testing. The specific test reaction conditions and treatment effect data are listed as follows:

[0048] Reaction conditions:

[0049] Ultrasonic input power: 0.5W / cm 2 (60 minutes ago);

[0050] Ultrasonic frequency: 59kHz (before 60min);

[0051] Operating voltage of thyristor ballast: 8V;

[0052] Concentration of supporting electrolyte NaCl: 0.03mol / L;

[0053] Corresponding current density: 18mA / cm 2 ;

[0054] Flow rate: 20mL / min.

[0055] Plate spacing: 5mm

[0056] Processing time: 250min

[0057]

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Abstract

A waste water treating apparatus of hyperacoustic-electricially catalyzing dye in azo type belongs to azo type dye waste water treating apparatus. The reacting apparatus is composed of waste water adjusting pool, flowmeter, reactor, yielding water container, hyperacoustic energy converter, controllable silicon amperite, cathode and anode disposed in the reactor and recycle pump. The apparatus has a good controllability, a simple process and a high processing efficiency. The reacting condition includes ultrasonic power 0.5w / cm2-2.0w / cm2, an operating voltage of controllable silicon amperite 3.5v-8v, the concentration of NaCl supporting electrolyte 0.02mol / L-0.08mol / L, relevant current density 5mA / cm2-50mA / cm2. The invention can effectively dispose azo type dye waste water harmlessly. It improves the reaction speed for 5-10 times compared with the current technology and reduces the energy consumption for 1-2 times. The disposed methyl orange simulates the waste water of a decolorizing rate and COD removing rate of more than 95%.

Description

1. Technical field [0001] The invention relates to an ultrasonic-electrocatalytic treatment device and reaction conditions for treating azo dye wastewater, which belongs to the treatment technology of azo dye wastewater. 2. Background technology [0002] The effective treatment of azo dye wastewater has always been a difficult problem. In recent years, advanced oxidation technologies such as wet oxidation method, Fenton method, photochemical and photocatalytic oxidation method, electrochemical method, ozone oxidation method, microwave assisted oxidation method and ultrasonic oxidation method have been adopted at home and abroad. [0003] Advanced oxidation water treatment technology is an emerging water treatment technology in the past 20 years. Because of its high efficiency, universality and thoroughness in oxidation degradation in pollutant degradation, it has become a hot topic in the field of water treatment research at home and abroad. But for now, the cost of complet...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/36C02F1/46C02F101/38
Inventor 薛建军崔益华王玲孙海波金丹萍薛峰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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