Penetration type heterogeneous electro-Fenton water treatment device and application thereof

A water treatment device and heterogeneous technology, applied in the field of environmental engineering, can solve the problems of limited electric Fenton technology, short contact time, limited catalytic performance, etc., and achieve the effects of facilitating popularization and application, high efficiency and low consumption degradation, and convenient replacement

Pending Publication Date: 2021-11-30
中化学朗正环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the catalytic performance of the traditional heterogeneous electro-Fenton cathode is affected by the limited electrocatalytic reaction area, short contact time between pollutants and electrode materials, and slow mass transfer, making the heterogeneous electro-Fenton electrode The utilization rate and reuse rate of the loaded catalyst are not high, which affects the treatment effect of heterogeneous electro-Fenton and limits the application of electro-Fenton technology

Method used

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  • Penetration type heterogeneous electro-Fenton water treatment device and application thereof
  • Penetration type heterogeneous electro-Fenton water treatment device and application thereof
  • Penetration type heterogeneous electro-Fenton water treatment device and application thereof

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Experimental program
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Effect test

Embodiment 1

[0041] This embodiment provides a method for preparing a carbon electrode layer loaded with iron nanoparticles, comprising:

[0042] Step 1. Pretreatment of cotton pads: Soak the cotton pads in ethanol solution, ultrasonically treat the ethanol solution soaked with cotton pads, take out the cotton pads after ultrasonic treatment, wash them with deionized water, and dry them to obtain pretreated cotton pads The quality of the ethanol solution is 5 times of the cotton quality, and the mass percentage of ethanol in the ethanol solution is 80%; the ultrasonic frequency of the ethanol solution soaked with cotton is 50kHz, and the ultrasonic power is about 150w. Operate at a duty rate of 60% to 90%, and the ultrasonic treatment time is 20 minutes; the drying temperature is 80°C, and the drying time is 8 hours;

[0043] Step 2, preparation ferrous sulfate solution: 5mg ferrous sulfate is dissolved in 30mL deionized water, obtains ferrous sulfate solution; In described ferrous sulfate...

Embodiment 2

[0056] This embodiment provides a method for preparing a carbon electrode layer loaded with iron nanoparticles, comprising:

[0057] Step 1. Pretreatment of cotton pads: Soak the cotton pads in ethanol solution, ultrasonically treat the ethanol solution soaked with cotton pads, take out the cotton pads after ultrasonic treatment, wash them with deionized water, and dry them to obtain pretreated cotton pads The quality of the ethanol solution is 4 times of the cotton quality, and the mass percentage of ethanol in the ethanol solution is 90%; the ultrasonic frequency of the ethanol solution soaked with cotton is 40kHz, and the ultrasonic power is about 150w. Operate at a duty rate of 60% to 90%, and the ultrasonic treatment time is 15 minutes; the drying temperature is 70°C, and the drying time is 9 hours;

[0058] Step 2, preparation ferrous sulfate solution: 5mg ferrous sulfate is dissolved in 30mL deionized water, obtains ferrous sulfate solution; In described ferrous sulfate...

Embodiment 3

[0068] This embodiment provides a method for preparing a carbon electrode layer loaded with iron nanoparticles, comprising:

[0069] Step 1. Pretreatment of cotton pads: Soak the cotton pads in ethanol solution, ultrasonically treat the ethanol solution soaked with cotton pads, take out the cotton pads after ultrasonic treatment, wash them with deionized water, and dry them to obtain pretreated cotton pads The quality of the ethanol solution is 3 times of the cotton quality, and the mass percentage of ethanol in the ethanol solution is 70%; the ultrasonic frequency for processing the ethanol solution soaked with cotton is 60kHz, and the ultrasonic power is about 150w. Operate at a duty rate of 60% to 90%, and the ultrasonic treatment time is 25 minutes; the drying temperature is 90°C, and the drying time is 7 hours;

[0070] Step 2, preparation of ferrous sulfate solution: 5mg of ferrous sulfate is dissolved in 30mL deionized water to obtain ferrous sulfate solution; in the fe...

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Abstract

The invention discloses a penetration type heterogeneous electro-Fenton water treatment device and application thereof, the penetration type heterogeneous electro-Fenton water treatment device comprises an electrochemical reactor, the electrochemical reactor is provided with a fluid inlet and a fluid outlet, an electrode layer is arranged in the electrochemical reactor, and the electrode layer is located between the fluid inlet and the fluid outlet; the electrode layer comprises a carbon electrode layer loaded with iron nanoparticles and a titanium mesh layer, and a supporting layer is arranged between the carbon electrode layer and the titanium mesh layer. According to the penetration type heterogeneous electro-Fenton water treatment device, the carbon electrode layer loaded with the iron nanoparticles, the supporting layer and the titanium mesh layer are arranged, a thin electrode surface diffusion layer is provided, fluid convection can be forced, rapid mass transfer is achieved in a penetrating flowing mode, organic matter in wastewater is adsorbed and enriched, no extra metal ion catalyst is needed, and pollutants in the wastewater are efficiently degraded with low consumption.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a penetrating heterogeneous electric Fenton water treatment device and its application. Background technique [0002] Compared with the traditional Fenton technology, the electric Fenton technology (EF) has many advantages such as no need to add hydrogen peroxide and less iron sludge output, but it still has a narrow pH range (pH=3) and needs to add Insufficient iron salts, etc., the heterogeneous electro-Fenton technology has received extensive attention and development in recent years. In the heterogeneous electro-Fenton system, the simultaneous introduction of solid-phase Fenton catalytic sites and oxygen reduction (ORR) active sites allows the in situ generated hydrogen peroxide to react with the catalytically active sites on the electrode to generate Hydroxyl free radicals, superoxide free radicals, singlet oxygen and other free radicals with s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2101/30C02F2305/026
Inventor 朱龙海段春宁王广耀于再基
Owner 中化学朗正环保科技有限公司
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