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Three-dimensional electrode reaction device and method for removing COD in wastewater

A reaction device and three-dimensional electrode technology, applied in chemical instruments and methods, water/sewage treatment, light water/sewage treatment, etc., can solve problems such as low removal efficiency, and achieve short treatment time, efficient removal, and improved utilization. low rate effect

Active Publication Date: 2021-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method for removing COD in wastewater improves the problem of low removal efficiency of traditional COD. The device improves the utilization efficiency of the reactor and effectively removes COD in wastewater.

Method used

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  • Three-dimensional electrode reaction device and method for removing COD in wastewater
  • Three-dimensional electrode reaction device and method for removing COD in wastewater

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Embodiment 1

[0033] see figure 1 , the present embodiment provides a three-dimensional electrode reaction device, which includes a tank body 8, the tank body 8 is used to place various components for performing electrochemical reactions and photocatalytic reactions, and provides a reaction place for electrochemical reactions and photocatalytic reactions. In the embodiment of the present invention, the tank body 8 is a rectangular parallelepiped structure, and it can be understood that other geometric structures in the prior art can also be used.

[0034] The tank body 8 is placed on the ground or on the platform, with the side of the tank body 8 touching the ground or close to the ground as the bottom, and the side opposite to the bottom as the top, which can be a closed structure or an open structure.

[0035] The liquid inlet 2 and the liquid outlet 5 are arranged on the tank body 8, the liquid inlet 2 and the liquid outlet 5 are located on the side wall of the tank body 8, and the two a...

Embodiment 2

[0045] The embodiment of the present invention provides a method for removing COD in wastewater, using the three-dimensional electrode reaction device in embodiment 1.

[0046] Specifically, the wastewater is taken from industrial wastewater produced by a refinery, and its main characteristics are: the COD content is 3402mg / L.

[0047] The waste water is injected into the tank body from the liquid inlet, and an anode plate and a cathode plate connected to the positive pole and the negative pole of the DC power supply are respectively placed on both sides of the tank body.

[0048] The anode plate is made of graphite, the cathode plate is made of stainless steel, the distance between the anode plate and the cathode plate is 8cm, and the voltage of the DC power supply is 20V. Turn on the light source, and the light source is a high-pressure mercury lamp.

[0049] The particle electrode 3 is columnar activated carbon with a diameter of 5 mm and a length of 10 mm. The photocatal...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a three-dimensional electrode reaction device and a method for removing COD in wastewater. The three-dimensional electrode reaction device comprises a tank body, a plurality of particle electrodes and a plurality of photocatalytic fillers; each particle electrode and each photocatalytic filler are arranged in the tank body, and each particle electrode and each photocatalytic filler are arranged at an interval, so that the plurality of particle electrodes are not in contact with each other. Insulating particles between the particle electrodes are replaced with the photocatalytic fillers, so that the problem that the utilization rate of an electrochemical reactor is low due to the insulating particles can be solved, meanwhile, the photocatalytic fillers can further conduct photocatalytic reaction, then the photocatalytic technology and the electrochemical technology are coupled, and by utilizing the photoelectric synergistic effect, pollutants in the industrial wastewater are subjected to an oxidation-reduction reaction in the reactor to be degraded, the target of '1+1>2' is achieved, and COD in the industrial wastewater is efficiently removed.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a three-dimensional electrode reaction device and a method for removing COD in wastewater. Background technique [0002] With the continuous development of industry, various resource and environmental problems brought about by industrial production are becoming more and more serious, and industrial wastewater treatment has become the focus and difficulty of current water pollution control. In water quality monitoring and analysis, chemical oxygen demand (COD) is an important index to evaluate the degree of water pollution, which reflects the degree of water pollution by reducing substances. The higher the COD content, the higher the content of reducing substances (such as organic matter) in the water body. On the one hand, the reducing substances contained in the water body can reduce the dissolved oxygen content in the water body, resulting in the death of aquatic o...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/30
CPCC02F1/46114C02F1/30C02F1/467C02F2001/46133C02F2305/10Y02W10/37
Inventor 李程崔新安王洪彬王雪于珊珊
Owner CHINA PETROLEUM & CHEM CORP
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