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Aeration-free electro-Fenton water treatment method and aeration-free electro-Fenton water treatment device

A water treatment device and aeration technology, applied in water/sewage treatment, oxidized water/sewage treatment, special compound water treatment, etc., can solve problems such as increasing operating costs and increasing the complexity of water treatment devices, and achieve stability , low operating cost and fast removal rate

Pending Publication Date: 2020-03-31
NANKAI UNIV
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Problems solved by technology

[0003] The traditional electric Fenton water treatment device needs an external aeration system to promote the cathode to produce H 2 o 2 , which often need to consume a large amount of pure oxygen or provide high air pressure, which not only increases the complexity of the water treatment device, but also greatly increases the operating cost

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  • Aeration-free electro-Fenton water treatment method and aeration-free electro-Fenton water treatment device
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  • Aeration-free electro-Fenton water treatment method and aeration-free electro-Fenton water treatment device

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Embodiment Construction

[0023] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention

[0024] The invention proposes an electric Fenton water treatment device without aeration. The core is an electrochemical reactor, according to an embodiment of the invention, with reference to figure 1 , the two sides of the cuboid reactor are composed of two active air diffusion electrodes 1 (length 17cm; height 4cm); the raw water is poured into the water inlet pipe 2 from the storage tank through the water pump, and the raw water flows from left to right in the air active diffusion cathode 1 and DSA anode 3 passes through the middle, and finally reaches the outlet pipe 4, and is discharged into the water storage tank to realize circulation; the cathode and an...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly provides an aeration-free electro-Fenton water treatment method and an aeration-free electro-Fenton water treatment device based on an air active diffusion cathode, wherein the method and the device have the advantages of high pollutant removal rate, low energy consumption and high stability. According to the invention, by using an air active diffusion electrode as a cathode of an electrochemical reactor, a large amount of H2O2 can be generated in situ through an oxygen reduction reaction and react with Fe<2+> to generate .OH with high oxidation capacity, so that organic pollutants in wastewater are efficiently degraded; with the method and the device, the defect that the conventional electrochemical water treatment device needs an aeration device to provide oxygen for in-situ generation of H2O2 is overcome, the investment and the operation energy consumption of aeration equipment are reduced, the yieldof H2O2 is improved, and the removal efficiency of pollutants is improved; and the novel water treatment device is simple in structure, low in electrode material cost and mild in operation condition,and can efficiently and electrically synthesize H2O2 in a wide current range so as to be used for electro-Fenton reaction treatment of wastewater.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular, the invention relates to an electric Fenton water treatment method and device without aeration. Background technique [0002] With the rapid economic development, water pollution has become a worldwide problem. The main causes of water pollution in my country can be divided into two categories: one is the excessive discharge of a large amount of industrial wastewater that is difficult to treat by traditional methods, and the other is the lack of suitable treatment facilities that cause some rural sewage to be discharged directly without treatment. Electro-Fenton water treatment technology through in situ generation of H 2 o 2 and with Fe 2 + The reaction can form strong oxidizing OH, thereby degrading pollutants non-selectively. As a "green" water treatment technology, electro-fenton has the advantages of mild reaction conditions, strong controllability, simple reacti...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2305/026
Inventor 周明华张齐展杜雪冬
Owner NANKAI UNIV
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