Method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater

A technology for mesotrione and pesticide wastewater, which is applied in the field of environmental protection technology and electrochemistry, can solve problems that have not yet been seen, and achieve the effect of simple equipment, low cost and simple method

Inactive Publication Date: 2014-09-10
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps treat harmful chemicals from polluted water that are used on crops or other plants without causing damage over their long-term use. It makes them more environmentally friendly because they don't have any negative impact upon our healthy ecosystem.

Problems solved by technology

This patented describes an improved way to chemically synthesize substances calledmesotoxin that kill unwanted plants without causing harmful effects when exposed to these crops. These compounds were found effective against various types of plant pests like rootwebbing spikes and grubs. They could potentially replace traditional ways of controlling stubble weeding and eradicating diseased vegetables from agriculture lands.

Method used

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  • Method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater
  • Method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater
  • Method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Using an electrode with a molar ratio of Sn:Sb:Ru:Ce of 84:6:5:5 as the anode, adjust the pH value of the residual solution of mesotrione wastewater recovery to 3, and then pass the wastewater through the inlet at a flow rate of 0.05L / min The valve enters the electrolytic cell, and the constant current DC power supply is adjusted so that the current density is 30mA / cm 2 , the water quality before and after treatment is as follows:

[0029]

Embodiment 2

[0031] Using an electrode with a molar ratio of Sn:Sb:Ru:Ce of 88:6:3:3 as the anode, adjust the pH value of the residual liquid recovered from mesotrione wastewater to 3, and then pass the wastewater through the inlet at a flow rate of 0.2L / min The valve enters the electrolytic cell, and the constant current DC power supply is adjusted so that the current density is 40mA / cm 2 , the water quality before and after treatment is as follows:

[0032]

Embodiment 3

[0034] Using an electrode with a molar ratio of Sn:Sb:Ru:Ce of 85:6:4:5 as the anode, adjust the pH value of the residual liquid recovered from mesotrione wastewater to 4, and then pass the wastewater through the inlet at a flow rate of 0.1L / min The valve enters the electrolytic cell, and the constant current DC power supply is adjusted so that the current density is 40mA / cm 2 , the water quality before and after treatment is as follows:

[0035]

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Abstract

The invention discloses a method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater. The method comprises the following steps: preparing a titanium-based tin antimony ruthenium cerium oxide electrode by using a coating-thermolysis method, feeding high-concentration methyl sulcotrione wastewater through an electrolytic cell which takes the titanium-based tin antimony ruthenium cerium oxide electrode as an anode, and continuously treating the wastewater for a certain time under certain current density. The titanium-based tin antimony ruthenium cerium oxide electrode is very good in stability, high in oxygen evolution potential and high in catalysis and oxidation capabilities. According to the method, the titanium-based tin antimony ruthenium cerium oxide electrode is adopted to pretreat high-concentration, high-salt and hard-biochemical wastewater generated in the production process of methyl sulcotrione, and the result shows that under conditions of certain pH values, current density and treatment time, the COD removal rate of the methyl sulcotrione can be greater than 50%, the BOD/COD is increased to be greater than 0.3 from less than 0.1, and the biodegradability is greatly improved. The electrochemical oxidation of the titanium-based tin antimony ruthenium cerium oxide electrode is very applicable to pretreatment on biochemical degradation of the high-salt high-concentration wastewater generated in the production of methyl sulcotrione.

Description

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Claims

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Application Information

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Owner YANCHENG INST OF TECH
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