Device and process for treating refractory wastewater through supergravity multistage cathode electric Fenton method

A high-gravity, refractory technology, applied in the field of water treatment, can solve the problems of mass transfer limitation, achieve the effect of strengthening reaction mass transfer process, improving treatment efficiency, and avoiding concentration polarization

Active Publication Date: 2014-05-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of limited mass transfer in the treatment of refractory wastewater by cathodic electro-Fenton method, the present invention provides a device and process for treating refractory wastewater by supergravity multi-stage cathodic electro-Fenton method

Method used

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  • Device and process for treating refractory wastewater through supergravity multistage cathode electric Fenton method
  • Device and process for treating refractory wastewater through supergravity multistage cathode electric Fenton method
  • Device and process for treating refractory wastewater through supergravity multistage cathode electric Fenton method

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Embodiment 1

[0042] Process embodiment 1 of the present invention: High-gravity multi-stage cathode electric Fenton reaction device and its process for treating refractory phenol-containing wastewater in petrochemical plants

[0043] The outer shell of the high-gravity multi-stage cathode electric Fenton reaction device is made of stainless steel and is lined with an insulating layer. The inner diameter is 400mm and the height is 240mm. The anode material of the concentric cylinder is titanium-based plating oxide, the cathode material of the concentric cylinder is graphite, the distance between anode and cathode is 10mm, the number of cathode or anode electrode is 9, the electrode height is 120mm, the distance between the cylinder cathode and the anode connecting plate is the same as that of the cylinder anode The connection distance from the cathode is equal to 10mm.

[0044] The initial COD content in the refractory phenol wastewater is 3700 mg / L. Add H in the wastewater storage tank befor...

Embodiment 2

[0045] Process embodiment 2 of the present invention: high-gravity multi-stage sacrificial anode electric Fenton reaction device and its process for treating wastewater containing organic phosphorus pesticides

[0046] The outer shell of the high-gravity multi-stage cathode electric Fenton reaction device is made of stainless steel and is lined with an insulating layer. The inner diameter is 300mm and the height is 200mm. The anode material of the concentric cylinder is lead dioxide coating material, the cathode material of the concentric cylinder is graphite, the distance between anode and cathode is 10mm, the number of cathode or anode electrode is 6, the electrode height is 100mm, the distance between the cylinder cathode and the anode connecting plate is the same as the cylinder The connection distance between the anode and the cathode is equal to 10mm.

[0047] The initial COD content in the wastewater containing organic phosphorus pesticides is 1700mg / L. Add H in the waste...

Embodiment 3

[0048] Process embodiment 3 of the present invention: High-gravity multi-stage sacrificial anode electric Fenton reaction device and its process for treating organic dye industrial wastewater

[0049] The outer shell of the high-gravity multi-stage cathode electric Fenton reaction device is made of stainless steel and is lined with an insulating layer. The inner diameter is 200mm and the height is 140mm. The anode material of the concentric cylinder is graphite, the cathode material of the concentric cylinder is stainless steel covered with activated carbon fiber material, the distance between anode and cathode is 6mm, the number of cathode or anode electrode is 5, the electrode height is 80mm, and the distance between the cylinder cathode and the anode connecting plate is the same as the cylinder The connection distance between the anode and the cathode is equal to 8mm.

[0050] The initial COD content in the refractory organic dye industrial wastewater is 630mg / L. Add H in th...

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Abstract

The invention belongs to the technical field of water treatment, and in particular relates to a device and a process for treating refractory wastewater through a supergravity multistage cathode electric Fenton method, aiming at solving the problem of limited mass transfer while treating refractory wastewater through a cathode electric Fenton method. According to the device, a cylinder anode and an anode connecting disc are static relatively to a shell; the center of a cathode connecting disc is connected with a rotating shaft which is capable of rotating at high speed; intake holes are distributed on the cathode connecting disc; and a gas circulating chamber is arranged at the bottom of the cathode connecting disc. According to the process, a supergravity multistage cathode electric Fenton reaction system is formed through the rotating cathode connecting disc and cylinder cathode as well as the static anode connecting disc and cylinder anode, inflated oxygen, and added ferrite. The device and the process disclosed by the invention not only can enhance mass transfer process of the cathode electric Fenton reaction, increase reaction speed, and improve oxygen utilization rate, H2O2 capacity and treatment efficiency; and a continuous operation in production is realized, liquid holdup is low, load is low, equipment is small and energy consumption is low.

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 high-gravity multi-stage cathode electro-Fenton method. Background technique [0002] Refractory wastewater has high concentrations of organic pollutants, high toxicity, complex components, and poor biodegradability. Conventional processes are difficult to achieve discharge standards, causing serious harm to the environment. It is recognized as a difficult problem in sewage treatment. In recent years, many advanced oxidation technologies have been developed to treat refractory wastewater, among which the electro-Fenton method uses electrochemical methods to generate H 2 o 2 and Fe 2+ As a continuous source of Fenton's reagent, utilize H 2 o 2 and Fe 2+ The interaction between them immediately generates hydroxyl radicals (·OH) with high reactivity. OH has strong oxidizing properties and can in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/38C02F1/46C02F1/72
Inventor 高璟刘有智张巧玲焦纬洲祁贵生袁志国栗秀萍申红艳王建伟
Owner ZHONGBEI UNIV
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