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Method for removing trace polluting organic substances from water through catalyzing potassium permanganate by cobalt oxide

A technology for catalyzing potassium permanganate and cobalt oxides, applied in the field of water treatment, can solve the problems of low removal rate of trace organic pollutants in water, and achieve the effects of easy upgrading, simple process and cost reduction.

Active Publication Date: 2015-05-20
江苏纳琦河湖生态环境治理研究院有限公司
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing potassium permanganate has a low removal rate of trace organic pollutants in water, the present invention provides a method for cobalt oxide to catalyze the oxidation of potassium permanganate to remove trace organic pollutants in water. substances as catalysts to improve the removal rate of trace organic pollutants in water

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  • Method for removing trace polluting organic substances from water through catalyzing potassium permanganate by cobalt oxide
  • Method for removing trace polluting organic substances from water through catalyzing potassium permanganate by cobalt oxide

Examples

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Embodiment 1

[0030] Such as figure 1 As shown, take 200mL of water samples to be treated containing trace organic pollutants, wherein the concentration of trace organic pollutants sulfamethoxazole is 5 μmol / L, and the pH value is 7.0. Add potassium permanganate and cobalt oxide to the water sample at the same time, wherein the dosage of potassium permanganate is 25 μmol / L, cobalt oxide Co 3 o 4 The dosage is 0.1g / L, and the water sample is treated for 1 hour. Compared with the oxidation of potassium permanganate alone, the removal rate of sulfamethoxazole is increased from about 1% to 64.88%, and the reaction rate is increased by 13 times.

Embodiment 2

[0032] Such as figure 2 As shown, take 200mL of water samples to be treated containing trace organic pollutants, wherein the concentration of trace organic pollutants sulfamethoxazole is 5 μmol / L, and the pH value is 7.0. Potassium permanganate and cobalt oxide were added to the water sample at the same time, the dosage of potassium permanganate was 15 μmol / L, and the cobalt oxide (CoO+Co 2 o 3 , mass ratio 1:1), the dosage is 0.05g / L, and the treatment time is 1h. Compared with the oxidation of potassium permanganate alone, the removal rate of sulfamethoxazole increases from about 1% to 57.59%. The speed has been increased by 10 times.

Embodiment 3

[0034] Take 200mL of water samples to be treated containing trace organic pollutants, wherein the concentration of trace organic pollutants sulfamethoxazole is 5 μmol / L, and the pH value is 7.0. Potassium permanganate and cobalt oxide were added to the water sample at the same time, the dosage of potassium permanganate was 5 μmol / L, and the cobalt oxide (CoO+Co 2 o 3, mass ratio 2:1) dosage is 0.05g / L, treatment time is 45min, compared with single potassium permanganate oxidation, the removal rate of sulfamethoxazole increased from about 1% to 45%.

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Abstract

The invention discloses a method for removing trace polluting organic substances from water through catalyzing potassium permanganate by a cobalt oxide. The method is characterized by comprising the following step: simultaneously adding potassium permanganate and the cobalt oxide into the water containing trace organic pollutants, wherein the treating time is 30 minutes to 3 hours, the amount of potassium permanganate is 1-25 micromole / liter, and the amount of the cobalt oxide is 0.01-0.1g / L. According to the method for removing the trace polluting organic substances from the water through catalyzing potassium permanganate by the cobalt oxide, disclosed by the invention, the problems in the prior art that the rate of removal of the trace organic pollutants from the water by potassium permanganate is low and the rate of oxidation is low are solved. Potassium permanganate undergoes oxidation-reduction reaction with the trace organic pollutants in the water under the catalytic action of the cobalt oxide, so that the organic pollutants are rapidly degraded, and meanwhile, the rate of removal of the organic pollutants is increased. The method can be used independently, can also be used in a manner of being combined with other water treatment processes and is simple in operation, small in investment and low in operating cost.

Description

technical field [0001] The invention relates to a method for cobalt oxide catalyzing potassium permanganate to remove micro-polluting organic matter in water, belonging to the technical field of water treatment. Background technique [0002] With the development of industry and economy and the frequent and massive use of medicines and personal care products, water source pollution and water quality safety have become worldwide problems. In addition to conventional pollution items, toxic organic pollutants have been detected in a considerable number of drinking water sources, so conventional drinking water treatment processes have been difficult to meet people's water quality requirements. The problem of decontamination of drinking water, especially the removal of trace organic pollutants in water, has attracted more and more attention. Many research results at home and abroad have shown that conventional coagulation, sedimentation, filtration, and disinfection processes can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
CPCC02F1/72C02F2101/30C02F2301/00C02F2305/02
Inventor 张静高莹朱亮金梦婷陈梦妍张瑞甲
Owner 江苏纳琦河湖生态环境治理研究院有限公司
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