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Preparation method of catalyst in microwave-assisted catalytic oxidation treating process for imidacloprid pesticide waste water

A technology for catalytic oxidation and pesticide wastewater, applied in the direction of oxidized water/sewage treatment, light water/sewage treatment, etc., can solve the problems of high treatment cost, large consumption of oxidant, small pH value range, etc., and achieve high treatment efficiency and easy operation Convenience and the effect of suitable water temperature

Inactive Publication Date: 2014-12-03
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of pesticide wastewater, advanced oxidation technology still has some shortcomings in practical application, such as high treatment cost, small applicable pH range, and large consumption of oxidant.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Selecting diameter is 300 order coconut shell activated carbons as the carrier of catalyst, with the HNO of 10% (mass fraction) 3 Soak 150g of coconut shell activated carbon in 1000mL of solution, wash with distilled water, shake at a constant temperature of 40°C for 20h, and then dry at a constant temperature of 70°C to constant weight to obtain an activated catalyst carrier. Weigh 100 g of the activated carrier, add 1000 mL of CuSO with a concentration of 0.3 mol / L 4 solution, soaked for 24h. Filtrate, discard the filtrate, put the treated catalyst carrier into 0.3mol / L oxalic acid solution for precipitation reaction for 24h, after filtration, dry in 80°C constant temperature water bath for 12h, then dry in 110°C electric constant temperature drying oven for 2h, after cooling , roasted at a high temperature of 400°C for 4 hours, and took it out to obtain a catalyst suitable for microwave-assisted catalytic oxidation treatment of imidacloprid pesticide w...

Embodiment 2

[0023] Embodiment 2: Select the coconut shell activated carbon with a diameter of 300 meshes as the carrier of the catalyst, and use 10% (mass fraction) of HNO 3 Soak 150g of coconut shell activated carbon in 1000mL of solution, wash with distilled water, shake at a constant temperature of 40°C for 20h, and then dry at a constant temperature of 70°C to constant weight to obtain an activated catalyst carrier. Weigh 100 g of the activated carrier, add 1000 mL of CuSO with a concentration of 0.2 mol / L 4 solution, soaked for 24h. Filter, discard the filtrate, put the treated catalyst carrier into 0.2mol / L oxalic acid solution for precipitation reaction for 24h, after filtering, dry in 80°C constant temperature water bath for 12h, then dry in 110°C electric constant temperature drying oven for 2h, after cooling , roasted at a high temperature of 350°C for 5 hours, and taken out to obtain a catalyst suitable for microwave-assisted catalytic oxidation treatment of imidacloprid pesti...

Embodiment 3

[0024] Embodiment 3: Select the coconut shell activated carbon with a diameter of 300 meshes as the carrier of the catalyst, and use 10% (mass fraction) of HNO 3 Soak 150g of coconut shell activated carbon in 1000mL of solution, wash with distilled water, shake at a constant temperature of 40°C for 20h, and then dry at a constant temperature of 70°C to constant weight to obtain an activated catalyst carrier. Weigh 100g of the activated support, add 1000mL of CuSO with a concentration of 0.4mol / L 4 solution, soaked for 24h. Filter, discard the filtrate, put the treated catalyst carrier into 0.4mol / L oxalic acid solution for precipitation reaction for 24h, after filtering, dry in 80°C constant temperature water bath for 12h, then dry in 110°C electric constant temperature drying oven for 2h, after cooling , roasted at a high temperature of 450°C for 3 hours, and taken out to obtain a catalyst suitable for microwave-assisted catalytic oxidation treatment of imidacloprid pesticid...

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Abstract

The invention relates to a preparation method of a copper catalyst in a microwave-assisted catalytic oxidation treating process for imidacloprid pesticide waste water. The method comprises the process steps as follows: choosing cocoanut shell activated charcoal as a carrier of the catalyst, soaking the cocoanut shell activated charcoal washed by distilled water in an HNO3 solution with a mass fraction of 10%, oscillating at a constant temperature, drying to constant weight at the constant temperature, obtaining the activated catalyst carrier, weighing the activated carrier, adding a CuSO4 solution, impregnating, filtering, discarding filtrate, putting the treated catalyst carrier into an oxalic acid solution for a precipitation reaction, drying by thermostatic waterbath after filtering, drying in an electrothermal constant-temperature dry box, roasting at a high temperature after cooling, taking out, and obtaining the catalyst applicable to the microwave-assisted catalytic oxidation treating process for the imidacloprid pesticide waste water. The method is high in treating efficiency, simple in adding mode and equipment, and convenient to operate, the outlet water temperature is appropriate, a novel high-efficient process is provided for treating the organic pesticide waste water difficult to degrade, and the method has wide application prospects.

Description

technical field [0001] The invention relates to a method for preparing a catalyst in the process of microwave-assisted catalytic oxidation treatment of imidacloprid pesticide wastewater, in particular to a method for preparing a copper-based catalyst used in the process of microwave-assisted catalytic oxidation treatment of imidacloprid pesticide wastewater. The invention belongs to the technical field of advanced oxidation treatment of wastewater. Background technique [0002] Pesticide wastewater is a kind of difficult-to-treat organic chemical wastewater, which has the characteristics of high mass concentration, deep color, high toxicity, complex pollutant components, and difficult biodegradation. At present, most of the pesticide wastewater treatment in my country usually only undergoes simple pretreatment and then enters the biochemical pool for biochemical treatment. Although the biochemical method is a relatively mature water treatment method with low treatment cost,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/72C02F1/72C02F1/30
Inventor 毕晓伊孙珮石许晓毅王洁杨海燕邹平邓辅唐
Owner YUNNAN UNIV