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Device and method for realizing free radical targeted oxidation in heterogeneous Fenton oxidation process

A heterogeneous Fenton and oxidation process technology, applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc., can solve the problems of unsatisfactory oxidation effect and low efficiency, and achieve significant economic benefits and Environmental protection and energy consumption reduction effects

Active Publication Date: 2021-07-02
NANJING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned problems of unsatisfactory oxidation effect and low efficiency when using Advanced Oxidation Technology (AOPs) to carry out pretreatment of refractory pollution, one of the purposes of the present invention is to provide a method for realizing heterogeneous Fenton oxidation process The free radical targeted oxidation device sets up the structure of the reactor of the heterogeneous Fenton oxidation reaction unit, and at the same time uses the electrochemical unit to assist, effectively improving the removal rate of macromolecular organic pollutants;

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  • Device and method for realizing free radical targeted oxidation in heterogeneous Fenton oxidation process
  • Device and method for realizing free radical targeted oxidation in heterogeneous Fenton oxidation process
  • Device and method for realizing free radical targeted oxidation in heterogeneous Fenton oxidation process

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Embodiment 1

[0096] In this embodiment, a device for targeted oxidation of free radicals in the heterogeneous Fenton oxidation process is used to treat the solution to be degraded; the water body of the solution to be degraded is the water body containing pyrazole (concentration is 100mg / L) . The specific processing steps are as follows:

[0097] S1. Utilize the reactor 4 which is divided into two chambers by an anion exchange membrane 8 as the reactor for the degradation experiment, and in the construction of the device for realizing the targeted oxidation of free radicals in the heterogeneous Fenton oxidation process, the trimmed Stainless steel electrode plates and graphite felts of the same size are respectively placed in chamber one 14 and chamber two 13 of the reactor 4 through the reserved opening at the upper end of the reactor 4, and the stainless steel and graphite felt are vertically and parallelly placed and connected by external wires 12 The regulated power supply 2 is respec...

Embodiment 2

[0133] In this embodiment, the solution to be degraded is treated with a device for realizing targeted oxidation of free radicals in the heterogeneous Fenton oxidation process; the water body of the solution to be degraded is the water body containing pyrazole (concentration is 200mg / L) . The specific processing steps are as follows:

[0134] S1. Utilize the reactor 4 which is divided into two chambers by an anion exchange membrane 8 as the reactor for the degradation experiment, and in the construction of the device for realizing the targeted oxidation of free radicals in the heterogeneous Fenton oxidation process, the trimmed Stainless steel electrode plates and graphite felts of the same size are respectively placed in chamber one 14 and chamber two 13 of the reactor 4 through the reserved opening at the upper end of the reactor 4, and the stainless steel and graphite felt are vertically and parallelly placed and connected by external wires 12 The regulated power supply 2 ...

Embodiment 3

[0143] In this embodiment, the solution to be degraded is treated with a device for realizing targeted oxidation of free radicals in the heterogeneous Fenton oxidation process; the water body of the solution to be degraded is the water body containing pyrazole (concentration is 200mg / L) . The specific processing steps are as follows:

[0144] S1. Utilize the reactor 4 which is divided into two chambers by an anion exchange membrane 8 as the reactor for the degradation experiment, and in the construction of the device for realizing the targeted oxidation of free radicals in the heterogeneous Fenton oxidation process, the trimmed Stainless steel electrode plates and graphite felts of the same size are respectively placed in chamber one 14 and chamber two 13 of the reactor 4 through the reserved opening at the upper end of the reactor 4, and the stainless steel and graphite felt are vertically and parallelly placed and connected by external wires 12 The regulated power supply 2 ...

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Abstract

The invention discloses a device and method for realizing free radical targeted oxidation in a heterogeneous Fenton oxidation process. A heterogeneous catalyst is placed in a cathode fluidized bed in a low electric field, the electronegativity difference between a target pollutant and an intermediate product is utilized, free radicals are controlled to attack target pollutant through the action of the electric field, the mass transfer efficiency and the catalytic rate of pollutants in the system are improved, and the device and the method are suitable for a water body with low dielectric medium concentration. The method is simple to operate, environment-friendly and mild in reaction condition, and the catalyst has good stability. According to the method disclosed by the invention, a low electric field can be well applied to the heterogeneous Fenton system, and the degradation capability of the device on refractory pollutants in water can be greatly improved.

Description

technical field [0001] The invention belongs to the field of water treatment equipment, and in particular relates to a device and method for realizing targeted oxidation of free radicals in a heterogeneous Fenton oxidation process. Background technique [0002] With the rapid development of society, the pollution of water environment is increasing. The increasingly serious water pollution not only reduces the use function of water bodies, aggravates the contradiction of water resource shortage, but also seriously threatens the drinking water safety and health of urban residents. Biodegradable organic matter in water bodies is the most difficult to deal with, and it is also the most harmful. [0003] At present, in wastewater treatment projects, there is no single water treatment method that can meet discharge standards, and the main treatment method is a combination of pretreatment and biological treatment. Among them, as described in Patent Application Document 1, pretreat...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/461C02F101/30
CPCC02F1/725C02F1/722C02F1/46104C02F2209/06C02F2305/026C02F2101/30C02F2209/02C02F1/46109C02F1/4672C02F2001/46133C02F2201/46115C02F2201/46135C02F2201/46185C02F1/66
Inventor 魏卡佳黄芳韩卫清刘润戴君诚刘思琪
Owner NANJING UNIV OF SCI & TECH