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Novel hydrogen peroxide generator, and method for of electro-Fenton treatment of organic wastewater

A generator and a new type of technology, applied in the field of environmental engineering, can solve the problems of increasing the power consumption of processing, affecting amplification and application, affecting electronic mass transfer and reaction, etc., to achieve a wide range of effects.

Active Publication Date: 2015-02-25
NANKAI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] However, in the currently used electro-Fenton system, GDE usually adopts a single-electrode structure with the cathode facing down. This configuration not only affects the mass transfer and reaction of electrons between the cathode and anode, but also increases the power consumption of the process.
Moreover, the system in which the two electrodes are not placed in parallel also greatly affects the amplification and application of this technology.

Method used

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  • Novel hydrogen peroxide generator, and method for of electro-Fenton treatment of organic wastewater
  • Novel hydrogen peroxide generator, and method for of electro-Fenton treatment of organic wastewater
  • Novel hydrogen peroxide generator, and method for of electro-Fenton treatment of organic wastewater

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Embodiment Construction

[0013] The present invention is further described in detail in conjunction with the accompanying drawings by the following examples.

[0014] (1) The novel H of the present invention 2 o 2 Generator configuration

[0015] New H 2 o 2 The configuration diagram of the generator is as follows figure 1 shown. The cylindrical sealed gas diffusion cathode is placed in the middle of the reactor, and consists of an air inlet, a gas outlet and two gas diffusion electrode sheets connected by wires. The cathode is placed in parallel with two anodes. In the process of hydrogen peroxide generation, the output of hydrogen peroxide is controlled by adjusting the air flow and cathode current density.

[0016] (2) New H 2 o 2 generator with conventional H 2 o 2 Generator Comparison

[0017] This example compares the new H 2 o 2 generator with conventional H 2 o 2 Effects of generators in various aspects. The experimental conditions are as follows: the volume is 200mL, pH=7, th...

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Abstract

The invention provides a novel H2O2 generator having the characteristics of high efficiency and energy saving. The basic configuration of the novel H2O2 generator is a double-electrode structure with the middle provided with an air diffusion cathode, and an anode and the cathode are arranged parallel to each other. The novel H2O2 generator generates higher concentration of H2O2 and costs above 60% lower power than traditional single-electrode H2O2 generators. An electro-Fenton technology based on the H2O2 generator can be used to realize good treatment effect of organic wastewater in a wide concentration range, and can be used to realize the pretreatment or advanced treatment on the organic wastewater difficult to degrade.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and mainly relates to the configuration design of a novel hydrogen peroxide generator and the application of the generator to electro-Fenton treatment of organic waste water. Background technique [0002] Electro-Fenton mainly utilizes electrochemical cathodic reduction to generate hydrogen peroxide (H 2 o 2 ), and form strong oxidizing hydroxyl radicals under the conditions of adding catalysts such as iron salts, thereby non-selectively degrading organic pollutants. Because of its high efficiency and environmental friendliness, it has shown good application prospects in the treatment of refractory wastewater such as chemicals, dyes, and pharmaceuticals. The use of electro-Fenton technology to treat organic wastewater mainly depends on the high-efficiency cathode, the cathode H 2 o 2 The larger the output and the higher the current efficiency, the more conducive to improving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/30C02F1/72
CPCC02F1/4672C02F1/722C02F2305/026C25B1/30
Inventor 周明华于新民
Owner NANKAI UNIV