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A particle electrode for treating refractory organic wastewater and its preparation method

A particle electrode and organic wastewater technology, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as difficulty in achieving satisfactory results, increased difficulty in printing and dyeing wastewater treatment, etc., to achieve close integration , low manufacturing cost and wide range of sources

Inactive Publication Date: 2018-01-12
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in recent years, the demand for dyes in the printing and dyeing industry has developed in the direction of anti-oxidation, anti-photolysis, and anti-biodegradation, which has further increased the difficulty in the treatment of printing and dyeing wastewater. It is difficult to achieve satisfactory results only by using traditional processes to treat printing and dyeing wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A particle electrode that can be used to treat refractory organic wastewater in this implementation example is composed of granular activated carbon and Mn, Co, and Ce oxides loaded on the granular activated carbon; the molar ratio of the Mn element to the Co element is: 0.5:1; the molar ratio of Mn element to Ce element is 5:1, and the preparation method includes the following steps:

[0029] 1) Activated carbon pretreatment: Soak powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 20min, filter and wash with deionized water until neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 20min, filter After washing with deionized water to neutrality, the cleaned activated carbon was ultrasonically cleaned for 20 minutes, filtered and dried at 95°C for 10 hours; the dried activated carbon was soaked in hydrogen peroxide for 1 hour for oxidative modification, and then filtered and washed. After drying at 95°C for 10 hours, the modifi...

Embodiment 2

[0037] A particle electrode that can be used to treat refractory organic wastewater in this implementation example is composed of granular activated carbon and Mn, Co, and Ce oxides loaded on the granular activated carbon; the molar ratio of the Mn element to the Co element is: 1:1; the molar ratio of Mn element to Ce element is 7.5:1, and the preparation method includes the following steps:

[0038] 1) Pretreatment of powdered activated carbon: Soak powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 20min, filter and wash with deionized water until neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 20min , filtered and washed with deionized water until neutral, then ultrasonically cleaned the cleaned activated carbon for 20 minutes, filtered and dried at 95°C for 10 hours; soaked the dried activated carbon in hydrogen peroxide for 1 hour for oxidative modification, and then filtered Wash and dry at 95°C for 10 hours to obtain modi...

Embodiment 3

[0046] A particle electrode that can be used to treat refractory organic wastewater in this implementation example is composed of granular activated carbon and Mn, Co, and Ce oxides loaded on the granular activated carbon; the molar ratio of the Mn element to the Co element is: 1.5:1; the molar ratio of Mn element to Ce element is 7.5:1, and the preparation method includes the following steps:

[0047] 1) Pretreatment of powdered activated carbon: Soak powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 25min, filter and wash with deionized water until neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 25min , filtered and washed with deionized water until neutral, then ultrasonically cleaned the cleaned activated carbon for 25 minutes, filtered and dried at 100°C for 11 hours; soaked the dried activated carbon in hydrogen peroxide for 1.5 hours for oxidative modification, and then Filter and wash, and dry at 100°C for 11 hours to o...

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PUM

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Abstract

The invention discloses a particle electrode for treatment of refractory organic wastewater particle and a preparation method for the particle electrode. The electrode comprises granular active carbon as well as Mn, Co and Ce supported on the granular active carbon. The preparation method comprises the following steps: pretreatment of powdered activated carbon, preparation of a composite impregnation solution, supporting of the powdered activated carbon onto metal oxide and granular active carbon forming. According to the preparation method, the step of doping of metal oxide into the particle electrode is performed before the step of forming, and the prepared particle electrode has the advantages of stable structure, simple preparation method, low manufacturing cost and the like, and is applied to a three-dimensional electrode reactor to effectively treat refractory organic wastewater.

Description

technical field [0001] The invention relates to the field of water pollution control, in particular to a particle electrode for treating refractory organic wastewater and a preparation method thereof. Background technique [0002] With the continuous development of our country's social economy and the gradual improvement of people's living standards, the accompanying environmental pollution problems have become increasingly prominent. The textile printing and dyeing industry occupies a relatively large proportion of my country's industrial production, and a large amount of wastewater is discharged into the environment during production and use, seriously polluting the environment. According to incomplete statistics, the daily discharge of printing and dyeing wastewater in the country is 3 to 4 million tons, accounting for 35% of the total industrial wastewater discharge in the country. The discharged printing and dyeing wastewater contains slurry, oil, dyes and chemical add...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72
CPCC02F1/46109C02F1/4672C02F2001/46133
Inventor 胡将军张骞李鸿鹄周王敕
Owner WUHAN UNIV
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