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An improved dual-cathode non-aeration electric Fenton sewage treatment device and method

A sewage treatment device and dual cathode technology, applied in water/sewage treatment, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc., can solve the problem of low efficiency, poor ferrous recycling performance, and narrow pH applicable range and other problems to achieve the effect of increasing the removal rate

Active Publication Date: 2022-08-09
NANKAI UNIV
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Problems solved by technology

[0007] The purpose of the invention is to solve the existing in-situ synthesis of H in the electric Fenton sewage treatment technology 2 o 2 Problems of low efficiency, poor ferrous recycling performance and narrow pH range

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  • An improved dual-cathode non-aeration electric Fenton sewage treatment device and method
  • An improved dual-cathode non-aeration electric Fenton sewage treatment device and method
  • An improved dual-cathode non-aeration electric Fenton sewage treatment device and method

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Embodiment Construction

[0028] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] The invention proposes an improved double-cathode non-aeration electric Fenton sewage treatment device. According to an embodiment of the present invention, refer to figure 1 , the treatment device includes an effective area of ​​5cm 2 The air active diffusion cathode (1), the effective area is 6cm 2 The modified carbon felt cathode (2), the two effective areas are 5cm 2 anode (3), a 250mL reaction vessel (4), a stirrer (5) and two DC power sources (6);

[0030] The air active diffusion cathode (1) is connected with an anode (3) through a DC power supply to form a loop; the modified carbon felt electrode (2) and another...

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Abstract

The invention belongs to the technical field of sewage treatment, and more particularly, proposes an improved dual-cathode non-aeration electric Fenton sewage treatment method and device. It can quickly generate a large amount of H in situ without aeration 2 O 2 At the same time, the cathode electroreduction is used to regenerate ferrous iron, which promotes the efficient occurrence of the Fenton reaction, and the device and method can have a good pollutant removal effect on wastewater with a pH value of 3-9. The invention solves the problems that the conventional electro-Fenton water treatment method needs aeration, poor ferrous recycling performance and narrow applicable pH range. The novel sewage treatment device proposed by the present invention includes an air active diffusion cathode, a modified carbon felt cathode, an anode, a reaction vessel, a direct current power source and a stirrer. Compared with the conventional non-aeration electro-Fenton technology, the invention can increase the mineralization efficiency of pollutants by more than 2 times, and can be used for the treatment of various organic wastewaters.

Description

technical field [0001] The present invention relates to the technical field of sewage treatment, and in particular, the present invention relates to a method and device for treating organic wastewater. Background technique [0002] Compared with the traditional advanced oxidation process, electro-Fenton is a more green and sustainable wastewater treatment technology. Electro-Fenton wastewater treatment technology can generate H in situ through the oxygen reduction reaction of the cathode 2 O 2 , avoiding the storage and transportation of high concentrations of H 2 O 2 The safety hazard brought by the solution. in situ generated H 2 O 2 with added Fe 2+ The catalyst undergoes a Fenton reaction, producing strongly oxidizing OH to degrade pollutants, and the Fe generated by the Fenton reaction 3+ Can be reduced to Fe at the cathode 2+ , thereby reducing the catalyst dosage and subsequent iron sludge production. Electro-Fenton sewage treatment technology has strong con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F1/461C02F1/467C02F1/72C02F101/38C02F101/30C02F101/34C02F1/66
CPCC02F1/4672C02F1/46109C02F2001/46128C02F2001/46142C02F2101/345C02F2101/34C02F2101/30C02F2209/20C02F1/66C02F2101/306C02F2101/40C02F2209/06C02F2305/026C02F2305/023Y02W10/10
Inventor 周明华张齐展韩璐洁
Owner NANKAI UNIV
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