Method for treating trifluralin pesticide wastewater by diamond film electrode

A technology of diamond film and pesticide wastewater, which is applied in the field of environmental protection technology and electrochemistry, can solve the problems of diamond film electrode treatment that have not yet been seen, and achieve the effects of suitable popularization, wide potential window and reduced loss

Inactive Publication Date: 2013-04-24
JIANGSU FENGSHAN GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] After searching, there is no use of diamond fil

Method used

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  • Method for treating trifluralin pesticide wastewater by diamond film electrode
  • Method for treating trifluralin pesticide wastewater by diamond film electrode
  • Method for treating trifluralin pesticide wastewater by diamond film electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Pour 25kg of trifluralin waste water into the collection container, turn on the self-priming pump, adjust the valve to control the flow through the electrolytic cell to 0.3t / h, turn on the regulated DC power supply, adjust the voltage to 5V, and continue to treat the waste water for 8 hours. The results are as follows:

[0029]

Embodiment 2

[0031] Pour 25kg of trifluralin wastewater into the collection container, turn on the self-priming pump, adjust the valve to control the flow through the electrolytic cell to 0.3t / h, turn on the regulated DC power supply, adjust the voltage to 7V, and continue to treat the waste for 1 hour. The results are as follows:

[0032]

Embodiment 3

[0034] Pour 25kg of trifluralin waste water into the collection container, turn on the self-priming pump, adjust the valve to control the flow through the electrolytic cell to 2t / h, turn on the regulated DC power supply, adjust the voltage to 7V, and continue to treat the waste for 1 hour. The results are as follows:

[0035]

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PUM

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Abstract

The invention discloses a method for treating trifluralin pesticide wastewater by a diamond film electrode. The method comprises the following steps of: firstly enabling high-concentration trifluralin wastewater to pass through an electrolytic tank with a diamond film electrode; then applying voltage at a certain flow rate; and finally continuously treating the wastewater for a period of time under a certain voltage. The diamond film electrode has the advantages of great acid and alkali resistance, corrosion resistance, wide potential window and small background current, and various properties of the diamond film electrode are far better than those of traditional glassy carbon, graphite, precious metal and electrodes with other forms. According to the method disclosed by the invention, the diamond film electrode is used for treating high-salinity and high-COD (chemical oxygen demand) wastewater produced in the production of trifluralin, and the results show that within certain flow rate, voltage and time ranges, the removal rate of COD in the trifluralin pesticide wastewater is above 95%, dinitro in the wastewater is completely removed, the wastewater is colorless and odorless apparently, and the diamond film electrode is very suitable for treating the high-salinity and high-COD wastewater produced in the production of the trifluralin.

Description

technical field [0001] The invention relates to a technical method and equipment, which uses the characteristics of wide potential window and strong corrosion resistance of diamond film electrodes to electrolytically treat high-salt and high-COD waste water produced in the production of trifluralin pesticides. It belongs to the field of environmental protection technology and electrochemistry. Background technique [0002] Trifluralin is a nitramine herbicide with the chemical name "4-trifluoromethyl-2,6-dinitro-N,N-di-n-propylaniline", which can control grass weeds and many Annual broad-leaved weed with high efficiency, low toxicity, low residue, and broad herbicidal spectrum. The production of trifluralin mainly uses chlorotoluene as raw material, and synthesizes products through four processes of chlorination, fluorination, nitration and amination. The wastewater generated during the product synthesis process includes nitrification neutralization water, nitrification wa...

Claims

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Application Information

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IPC IPC(8): C02F1/461
Inventor 李志凌殷凤山王洪雷单永祥王波卞晨阳
Owner JIANGSU FENGSHAN GROUP
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