Device and technology for processing degradation-resistant waste water through hypergravity multistage sacrificial anode electro-Fenton method

A sacrificial anode and supergravity technology, applied in the field of water treatment, can solve problems such as concentration polarization, achieve the effects of preventing concentration polarization, improving treatment efficiency, and increasing turbulence

Active Publication Date: 2014-03-05
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 technology for processing degradation-resistant waste water through hypergravity multistage sacrificial anode electro-Fenton method
  • Device and technology for processing degradation-resistant waste water through hypergravity multistage sacrificial anode electro-Fenton method
  • Device and technology for processing degradation-resistant waste water through hypergravity multistage 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 power ...

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 4T...

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 pH ...

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Abstract

The invention belongs to the water processing technology field, concretely provides a device and a technology for processing degradation-resistant waste water through a hypergravity multistage sacrificial anode electro-Fenton method, and solves the problem of mass transfer limitation in processing degradation-resistant waste water through a sacrificial anode electro-Fenton method. The device comprises a plurality of corrugated cylindrical anodes and anode connection disks and a plurality of corrugated cylindrical cathodes and cathode connection disks. The corrugated cylindrical cathodes and the cathode connection disks are stationary relative to a shell. The centers of the anode connection disks are connected with a rotating shaft. In the technology, the rotary corrugated cylindrical anodes and anode connection disks, the stationary corrugated cylindrical cathodes and cathode connection disks and a H2O2 solution form a hypergravity multistage sacrificial anode electro-Fenton reaction system. The device and the technology can reinforce the mass transfer process of the electro-Fenton reaction. The electrode area utilization rate, the oxygen utilization rate, the H2O2 production rate and the processing efficiency are all raised. The device has advantages of small size, low load and low energy consumption, and is suitable for continuous operation and 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 Applications(China)
IPC IPC(8): C02F1/46C02F1/72
Inventor 刘有智高璟祁贵生袁志国栗秀萍申红艳张巧玲焦纬洲王建伟
Owner ZHONGBEI UNIV
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