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Method for degrading organic pollutants by using graphene oxide wastewater

A technology for the degradation of organic pollutants and wastewater, applied in the direction of water pollutants, oxidized water/sewage treatment, chemical instruments and methods, etc., can solve problems such as non-compliance, waste of resources, and increased costs, and achieve fast degradation rates and low treatment costs The effect of low and high degradation efficiency

Inactive Publication Date: 2018-11-30
杭州启源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has caused a great waste of resources and increased costs, which does not meet the requirements of contemporary environmental protection concepts.

Method used

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  • Method for degrading organic pollutants by using graphene oxide wastewater
  • Method for degrading organic pollutants by using graphene oxide wastewater
  • Method for degrading organic pollutants by using graphene oxide wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Take 50mL of graphene oxide GO wastewater prepared by the Hummers method, and add 500mL of rhodamine B dye wastewater with a COD of [z1] at 20°C±2°C. At this time, the pH range is 2-5, and then add 5ml of 2g / L Hydrogen peroxide reacts with it. Under the action of mechanical stirring, react for one hour, measure the value [z2] of Rhodamine B wastewater every 10 minutes and calculate the COD removal rate.

Embodiment 2

[0030] Take 50mL of graphene oxide GO wastewater prepared by the Hummers method, and add 500mL of bisphenol S wastewater with a COD of [z3] under the condition of 20°C±2°C. At this time, the pH range is 2-5, and then add 1ml of 1g / L Na 2 S 2 o 8 The solution reacts with it. Under the action of mechanical stirring, react for one hour, measure the COD value of bisphenol S wastewater every 10 minutes and calculate the COD removal rate.

Embodiment 3

[0032] Take 50mL of graphene oxide GO wastewater prepared by the Hummers method, and add 500mL of medical wastewater with a COD of [z4] at 20°C±2°C. At this time, the pH range is 2-5, and then add 2ml of 1g / L sodium sulfite solution React with it. Under the action of mechanical stirring, react for one hour, measure the COD value of medical wastewater every 10 minutes and calculate the COD removal rate.

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Abstract

The invention discloses a method for degrading organic pollutants by using graphene oxide wastewater. The method comprises steps as follows: graphene oxide wastewater and organic pollutants wastewaterof 50-10,000 mg / L COD are mixed, the volume ratio of graphene oxide wastewater and organic pollutants wastewater is 1:(10-20), the pH range is 2.5-3.3, the concentration of manganese ion is 20-60 mg / L; an oxidizing agent is added in the temperature of 15-30 DEG C; the reaction time lasting more than one hour. The method is simple and easy to operate, the problems of treating and recycling high acid and manganese wastewater are solved, the maximization of resource utilization is realized; the acid and manganese ions in the graphene oxide waste liquor are effectively utilized, the method not only eliminates the pollution source but also degrades organic pollutants; reusing wastewater, more environmental-friendly, the quality of environment is improved, the organic wastewater treatment is low in cost, the pollution and resource waste can be avoided.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a method for using graphene oxide wastewater to degrade organic pollutants. Background technique [0002] There are many companies that produce graphene oxide. The Hummers method prepares graphene oxide by adding graphite powder, sodium nitrate and potassium permanganate to concentrated sulfuric acid for oxidation reaction, and then adding an appropriate amount of hydrogen peroxide to reduce the residual oxidant. In the production process, waste water will inevitably be produced. The waste water contains sulfate, nitrate, manganese salt, suspended solids and other substances that seriously pollute the environment. The manganese ion concentration is 400-600mg / L, and the sulfate content is 2000- 4500mg / L, the nitrate content is 1000-2000mg / L, and the pH is 1-2. This is not only a waste of resources, but also has a certain impact on the social environment. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/72C02F1/722C02F1/725C02F2101/30C02F2209/02C02F2209/06C02F2209/08C02F2305/023
Inventor 蔡美强毛佳琪王倩陈海锋鲁伟
Owner 杭州启源环保科技有限公司