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Device and process for treating refractory wastewater by high-gravity multi-stage sacrificial anode electro-fenton method

A sacrificial anode and supergravity technology, which is applied in the field of water treatment, can solve problems such as concentration polarization, and achieve the effects of preventing concentration polarization, increasing turbulence, and increasing electrode area utilization.

Active Publication Date: 2015-08-19
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the anode dissolved Fe 2+ and H 2 o 2 The transport process in wastewater is prone to concentration polarization

Method used

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  • Device and process for treating refractory wastewater by high-gravity multi-stage sacrificial anode electro-fenton method
  • Device and process for treating refractory wastewater by high-gravity multi-stage sacrificial anode electro-fenton method
  • Device and process for treating refractory wastewater by high-gravity multi-stage sacrificial anode electro-fenton method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: High-gravity multi-stage sacrificial anode electric Fenton reaction device and process treatment coking plant refractory phenol-containing wastewater

[0046] The shell of the supergravity multistage sacrificial anode electric Fenton reaction device is made of plexiglass material. The inner diameter is 400mm and the height is 240mm. The anode material of the concentric corrugated cylinder is iron, and the cathode material of the concentric corrugated cylinder is stainless steel. The distance between the cathode and anode electrodes of the corrugated cylinder is 5mm, the number of cathode or anode electrodes is 5, and the electrode height is 150mm.

[0047] The initial phenol content in the refractory phenol-containing wastewater of a coking plant was 6200mg / L, and the COD content was 8400mg / L. Dosing H into the wastewater storage tank before treatment 2 SO 4 The solution adjusts the initial pH of the wastewater to 3.5, turns on the DC stabilized powe...

Embodiment 2

[0048] Embodiment 2: supergravity multistage sacrificial anode electro-Fenton reaction device and process treatment of pyrotechnics factory dinitrotoluene wastewater

[0049]The shell of the supergravity multistage sacrificial anode electric Fenton reaction device is made of plexiglass material. The inner diameter is 300mm and the height is 200mm. The anode material of the concentric corrugated cylinder is iron, and the cathode material of the concentric corrugated cylinder is stainless steel. The distance between the positive and negative electrodes of the corrugated cylinder is 5mm, the number of cathode or anode electrodes is 4, and the electrode height is 120mm. The distance between the cylindrical cathode and the anode disk is equal to the distance between the cylindrical anode and the cathode disk is 10mm.

[0050] The content of COD in the dinitrotoluene wastewater of explosives factory is 3300mg / L. Dosing H into the wastewater storage tank before treatment 2 SO 4...

Embodiment 3

[0051] Embodiment 3: supergravity multistage sacrificial anode electro-Fenton reaction device and process thereof for organochlorine pesticide waste water

[0052] The shell of the supergravity multistage sacrificial anode electric Fenton reaction device is made of plexiglass material. The inner diameter is 200mm and the height is 140mm. The anode material of the concentric corrugated cylinder is iron, and the cathode material of the concentric corrugated cylinder is iron. The distance between the negative and positive electrodes of the corrugated cylinder is 5mm, the number of cathode or anode electrodes is 3, and the electrode height is 80mm. The distance between the cylindrical cathode and the anode disk is equal to the distance between the cylindrical anode and the cathode disk, which is 4mm.

[0053] The COD content in organochlorine pesticide wastewater was 760mg / L. Dosing H into the wastewater storage tank before treatment 2 SO 4 The solution adjusts the initial p...

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Abstract

The invention belongs to the technical field of water treatment, and specifically relates to a device and a process for treating refractory wastewater by a supergravity multistage sacrificial anode electro-Fenton method, which solves the problem of limited mass transfer when the sacrificial anode electro-Fenton method treats refractory wastewater. The device comprises a plurality of corrugated cylinder anodes and anode connection plates and a plurality of corrugated cylinder cathodes and cathode connection plates, the corrugated cylinder cathodes and cathode connection plates are stationary relative to the casing, and the center of the anode connection plate is connected to a rotating shaft. Said process utilizes rotating corrugated cylindrical anode and anode connecting plate, stationary corrugated cylindrical cathode and cathode connecting plate and H2O2 solution to form a supergravity multistage sacrificial anode electro-Fenton reaction system. The invention can strengthen the mass transfer process of the electro-Fenton reaction, improve the electrode area utilization rate, oxygen utilization rate, H2O2 productivity, and processing efficiency. The equipment has small volume, low load, and low energy consumption, and is suitable for continuous operation and large-scale processing.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a device and a process for treating refractory wastewater by a supergravity multistage sacrificial anode electro-Fenton method. Background technique [0002] With the rapid development of petrochemical, dyestuff and pharmaceutical industries, the number and types of refractory organic matter in wastewater have increased, and the difficulty of their treatment has also increased, and more and more researches have been done on treatment methods. Among them, conventional physical methods and biochemical methods are difficult to deal with. At present, domestic and foreign researchers have adopted many advanced oxidation technologies for the characteristics of refractory wastewater, such as: electrochemical oxidation, wet oxidation, supercritical oxidation, photocatalytic oxidation, Fenton oxidation, ultrasonic oxidation, etc. The electro-Fenton method, which comb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/46C02F1/72
Inventor 高璟刘有智祁贵生袁志国栗秀萍申红艳张巧玲焦纬洲王建伟雷权
Owner ZHONGBEI UNIV
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